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  • Converting currencies via intermediate currencies.

    - by chillitom
    class FxRate { string Base { get; set; } string Target { get; set; } double Rate { get; set; } } private IList<FxRate> rates = new List<FxRate> { new FxRate {Base = "EUR", Target = "USD", Rate = 1.3668}, new FxRate {Base = "GBP", Target = "USD", Rate = 1.5039}, new FxRate {Base = "USD", Target = "CHF", Rate = 1.0694}, new FxRate {Base = "CHF", Target = "SEK", Rate = 8.12} // ... }; Given a large yet incomplete list of exchange rates where all currencies appear at least once (either as a target or base currency): What algorithm would I use to be able to derive rates for exchanges that aren't directly listed? I'm looking for a general purpose algorithm of the form: public double Rate(string baseCode, string targetCode, double currency) { return ... } In the example above a derived rate would be GBP-CHF or EUR-SEK (which would require using the conversions for EUR-USD, USD-CHF, CHF-SEK) Whilst I know how to do the conversions by hand I'm looking for a tidy way (perhaps using LINQ) to perform these derived conversions perhaps involving multiple currency hops, what's the nicest way to go about this?

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  • How come my form input sometimes moves when I refresh the page?

    - by samoz
    On a page that I'm designing I have a form with one input of type text. Normally, this form and input render properly in my browser, Chrome, but occasionally, it renders about 20 pixels to the left of where it is supposed to be. When I refresh the page, it goes back to the original, correct place. I have only tested in Chrome so far, so this isn't a cross-browser issue (it happens in the same browser). Is there anything wrong with my code below? Here's my HTML code: <!DOCTYPE htmls> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <link rel="stylesheet" href="style.css" type="text/css" /> <title>Test Site</title> </head> <body > <div id="supercontainer" class="style1"> <img class="floater" src="top.jpg" alt="Top" /> <img class="floater" src="left.jpg" alt="Left" /> <div id="content"> <p id="theText"> Welcome. Please type a username. </p> <form id="prompt"> <div><input type="text" name="promptLine" autocomplete="off" id="promptLine" onkeypress="return submitenter(event);" value="% " /></div> </form> </div> <img class="floater" src="right.jpg" alt="Right" /> <img class="floater" src="bottom.jpg" alt="Bottom" /> </div> Here's my CSS code: #supercontainer { margin: 0 auto; width: 900px; display: block; } img.floater { display: inline; float: left; } #content { background-color:black; display: inline; float: left; padding-left:5px; padding-right:5px; min-height:458px; max-height:458px; min-width: 803px; max-width: 803px; color: lime; } #theText { text-align:left; margin-bottom:0; margin-top:0; line-height: 0.3; font-family:"Courier New", Courier, monospace; } #prompt { position: fixed; top: 470px; } #promptLine { width: 100%; background-color: black; color: lime; border: none; outline:none; }

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  • How to set a global CURL rate(speed) limit?

    - by Mint
    I had a look around for the CURL settings file but didn't find it in /etc/ and didn't find much on the curl site ether... So basically what I want to do set a maximum speed limit that curl can upload at (no matter how many instances of it are running) so that my server has some upload capacity left for other tasks.

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  • Limiting interface bandwidth with tc under Linux

    - by Matt
    I have a linux router which has a 10GBe interface on the outside and bonded Gigabit ethernet interfaces on the inside. We have currently budget for 2GBit/s. If we exceed that rate by more than 5% average for a month then we'll be charged for the whole 10Gbit/s capacity. Quite a step up in dollar terms. So, I want to limit this to 2GBit/s on 10GBe interface. TBF filter might be ideal, but this comment is of concern. On all platforms except for Alpha, it is able to shape up to 1mbit/s of normal traffic with ideal minimal burstiness, sending out data exactly at the configured rates. Should I be using TBF or some other filter to apply this rate to the interface and how would I do it. I don't understand the example given here: Traffic Control HOWTO In particular "Example 9. Creating a 256kbit/s TBF" tc qdisc add dev eth0 handle 1:0 root dsmark indices 1 default_index 0 tc qdisc add dev eth0 handle 2:0 parent 1:0 tbf burst 20480 limit 20480 mtu 1514 rate 32000bps How is the 256K bit/s rate calculated? In this example, 32000bps = 32k bytes per second. Since tc uses bps = bytes per second. I guess burst and limit come into play but how would you go about choosing sensible numbers to reach the desired rate? This is not a mistake. I tested this and it gave a rate close to 256K but not exactly that.

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  • Problems using wondershaper on KVM guest

    - by Daniele Testa
    I am trying to limit bandwidth on one of my KVM guest using Wondershaper. Doing something like this works fine: wondershaper br23 9000 9000 Doing a wget with the setting above gives a download speed of about 1MB/sec like it should. However, it seems this is the highest setting I can use, because setting it to this does not work: wondershaper br23 10000 10000 Doing the same wget with the setting above downloads with full speed, about 70MB/sec in my case. Running a status-check returns the following: qdisc cbq 1: root refcnt 2 rate 10000Kbit (bounded,isolated) prio no-transmit Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 borrowed 0 overactions 0 avgidle 12500 undertime 0 qdisc sfq 10: parent 1:10 limit 127p quantum 1514b divisor 1024 perturb 10sec Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 qdisc sfq 20: parent 1:20 limit 127p quantum 1514b divisor 1024 perturb 10sec Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 qdisc sfq 30: parent 1:30 limit 127p quantum 1514b divisor 1024 perturb 10sec Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 qdisc ingress ffff: parent ffff:fff1 ---------------- Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 class cbq 1: root rate 10000Kbit (bounded,isolated) prio no-transmit Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 borrowed 0 overactions 0 avgidle 12500 undertime 0 class cbq 1:1 parent 1: rate 10000Kbit (bounded,isolated) prio 5 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 borrowed 0 overactions 0 avgidle 12500 undertime 0 class cbq 1:10 parent 1:1 leaf 10: rate 10000Kbit prio 1 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 borrowed 0 overactions 0 avgidle 12500 undertime 0 class cbq 1:20 parent 1:1 leaf 20: rate 9000Kbit prio 2 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 borrowed 0 overactions 0 avgidle 12500 undertime 0 class cbq 1:30 parent 1:1 leaf 30: rate 8000Kbit prio 2 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 borrowed 0 overactions 0 avgidle 12500 undertime 0 What am I doing wrong? Does wondershaper have some kind of upper limit?

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  • Rotate screen using xrandr on Solaris 10

    - by sixtyfootersdude
    How do I call the xrandr command? I want to rotate my screen 90 deg. clockwise. Here is the usage: % xrandr -help usage: xrandr [options] where options are: -display <display> or -d <display> -help -o <normal,inverted,left,right,0,1,2,3> or --orientation <normal,inverted,left,right,0,1,2,3> -q or --query -s <size>/<width>x<height> or --size <size>/<width>x<height> -r <rate> or --rate <rate> or --refresh <rate> -v or --version -x (reflect in x) -y (reflect in y) --screen <screen> --verbose --dryrun --prop or --properties --fb <width>x<height> --fbmm <width>x<height> --dpi <dpi>/<output> --output <output> --auto --mode <mode> --preferred --pos <x>x<y> --rate <rate> or --refresh <rate> --reflect normal,x,y,xy --rotate normal,inverted,left,right --left-of <output> --right-of <output> --above <output> --below <output> --same-as <output> --set <property> <value> --off --crtc <crtc> --newmode <name> <clock MHz> <hdisp> <hsync-start> <hsync-end> <htotal> <vdisp> <vsync-start> <vsync-end> <vtotal> [+HSync] [-HSync] [+VSync] [-VSync] --rmmode <name> --addmode <output> <name> --delmode <output> <name> This is what I tried: % xrandr -o left X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of failed request: 159 (RANDR) Minor opcode of failed request: 2 () Serial number of failed request: 16 Current serial number in output stream: 16 I am running Solaris 10.

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  • Slow Windows Explorer on Windows 7

    - by MadBoy
    I have Laptop with i7 (4 cores), 8GB ram and SSD OCZ Vertex 3 MaxIOPS which in testing that I did just now does 400mb/s+ read/write. However the responsiveness of Windows Explorer is far from being perfect. Opening up Computer, Documents, going into folders is very slow (1-5seconds). I don't have any viruses or spyware and I have tried changing properties to optimize view for General Items. I tried disabling Search Indexer but it made search in Outlook 2010 crawl and didn't bring any other effect. Even double clicking on file takes some time to open things up (like clicking a Word document). I don't have any drives mapped, my computer is not joined to domain. I have multiple VPN connections that I connect to but they all have disabled default gateways. I tried using CC Cleaner or some Windows 7 Tweaks app to disable some things. I am power user using Visual Studio, Tortoise SVN and other developer/administration apps. Any non obvious ideas? Edit: So I've been trying to pinpoint where the issue comes from and it seems that straight after reboot Windows Explorer opens very fast, when I load 3-4 programs (Royal TS, Visual Studio, Outlook) it's noticeably slower and the more programs I have it gets worse. After I start closing programs it starts working better and if I leave 2 open it's fast again. I tried doing some research with DiskMon and other programs from sysinternals but couldn't find anything suspicious. Below are stats during normal usage with a lots of programs open: - Ram usage with a lot of programs open and no swap file (i disabled it for testing): 6.95GB - CPU usage: 15%, none of the cores takes more then 50% (I have VS 2010 open x 4) HD Tune Pro: OCZ-VERTEX3 MI Benchmark Test capacity: full Read transfer rate Transfer Rate Minimum : 363.9 MB/s Transfer Rate Maximum : 505.5 MB/s Transfer Rate Average : Access Time : Burst Rate : CPU Usage : HD Tune Pro: OCZ-VERTEX3 MI File Benchmark Drive C: Transfer rate test File Size: 500 MB Sequential read 484102 KB/s Sequential write 444714 KB/s Random read 7779 IOPS Random write 16888 IOPS Random read (queue depth = 32) 73007 IOPS Random write (queue depth = 32) 69790 IOPS HD Tune Pro: OCZ-VERTEX3 MI Random Access Test capacity: full Read test Transfer size operations / sec avg. access time max. access time avg. speed 512 bytes 3260 IOPS 0.306 ms 2.106 ms 1.592 MB/s 4 KB 4161 IOPS 0.240 ms 2.006 ms 16.256 MB/s 64 KB 2382 IOPS 0.419 ms 2.367 ms 148.934 MB/s 1 MB 449 IOPS 2.225 ms 4.197 ms 449.407 MB/s Random 809 IOPS 1.235 ms 6.551 ms 410.527 MB/s HD Tune Pro: OCZ-VERTEX3 MI Extra Tests Test capacity: full Random seek 3975 IOPS 0.252 ms 1.941 MB/s Random seek 4 KB 4245 IOPS 0.236 ms 16.583 MB/s Butterfly seek 4086 IOPS 0.245 ms 1.995 MB/s Random seek / size 64 KB 3812 IOPS 0.262 ms 58.606 MB/s Random seek / size 8 MB 120 IOPS 8.348 ms 485.737 MB/s Sequential outer 4524 IOPS 0.221 ms 282.721 MB/s Sequential middle 4429 IOPS 0.226 ms 276.818 MB/s Sequential inner 5504 IOPS 0.182 ms 344.000 MB/s Burst rate 4472 IOPS 0.224 ms 279.475 MB/s

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  • NSTableView not refreshing when calling method from different class

    - by Matt S.
    I have a table view that gets refreshed two different ways. One is through a button and the other is when I call my refresh method, which is the same method that I use for the button, but for some reason, when I hit the button it works, but when I call it through a different class it doesn't. Here's the code that I use to refresh the tableview: Msqv *qv = [Msqv new]; [qv refresh:self]; //refresh is an IBAction that is used by the button

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  • Which has a faster data transfer rate? WIFI (tablet or cell phone, not LTE) or MicroSD (Class 10)?

    - by techaddict
    Which of the two methods of dta transfer trasfers data at a faster rate for smartphones and tablets? Standard WIFI, or MicroSD Cards? I wonder if it would be actually faster to access data on external storage then it would be to have the MicroSD card in my smartphone or tablet. Currently I have a class 10 32GB MicroSD card in my cell phone. I am looking to get the new Google Nexus tablet but it does not offer expandable internal storage. I wonder if that's really a detriment; because if WIFI is faster than MicroSD, then it would matter almost none at all that you couldn't expand the storage internally. If the case is that WIFI is faster, and people caught onto this, then people could save a lot of money on lower memory ipads/iphones/ipods, tablets, and smartphones!

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  • passing values to php print page

    - by DAFFODIL
    In this wen i select a value in drop down box it will list out that name value in table .There will be a check box ,the checked values should be passed to pring page which is below the 1st part of code. Any help ii be appreciated <?php $con = mysql_connect("localhost","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("form1", $con); error_reporting(E_ALL ^ E_NOTICE); $nam=$_REQUEST['select1']; $row=mysql_query("select * from inv where name='$nam'"); while($row1=mysql_fetch_array($row)) { $Name=$row1['Name']; $Address =$row1['Address']; $City=$row1['City']; $Pincode=$row1['Pincode']; $No=$row1['No']; $Date=$row1['Date']; $DCNo=$row1['DCNo']; $DcDate=$row1['DcDate']; $YourOrderNo=$row1['YourOrderNo']; $OrderDate=$row1['OrderDate']; $VendorCode=$row1['VendorCode']; $SNo=$row1['SNo']; $descofgoods=$row1['descofgoods']; $Qty=$row1['Qty']; $Rate=$row1['Rate']; $Amount=$row1['Amount']; } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <title>Untitled Document</title> <script type="text/javascript"> function ram() { var q=document.getElementById('qty').value; var r=document.getElementById('rate').value; document.getElementById('amt').value=q*r; } </script> </head> <body> <form id="form1" name="form1" method="post" action=""> <table width="1315" border="0"> <script type="text/javascript"> function g() { form1.submit(); } </script> <tr> <th>Name</th> <th align="left"><select name="select1" onchange="g();"> <option value="" selected="selected">select</option> <?php $row=mysql_query("select Name from inv "); while($row1=mysql_fetch_array($row)) { ?> <option value="<?php echo $row1['Name'];?>"><?php echo $row1['Name'];?></option> <?php } ?> </select></th> </tr> <tr> <th>Address</th> <th align="left"><textarea name="Address"><?php echo $Address;?></textarea></th> </tr> <tr> <th>City</th> <th align="left"><input type="text" name="City" value='<?php echo $City;?>' /></th> </tr> <tr> <th>Pincode</th> <th align="left"><input type="text" name="Pincode" value='<?php echo $Pincode;?>'></th> </tr> <tr> <th>No</th> <th align="left"><input type="text" name="No2" value='<?php echo $No;?>' readonly="" /></th> </tr> <tr> <th>Date</th> <th align="left"><input type="text" name="Date" value='<?php echo $Date;?>' readonly="" /></th> </tr> <tr> <th>DCNo</th> <th align="left"><input type="text" name="DCNo" value='<?php echo $DCNo;?>' readonly="" /></th> </tr> <tr> <th>DcDate:</th> <th align="left"><input type="text" name="DcDate" value='<?php echo $DcDate;?>' /></th> </tr> <tr> <th>YourOrderNo</th> <th align="left"><input type="text" name="YourOrderNo" value='<?php echo $YourOrderNo;?>' readonly="" /></th> </tr> <tr> <th>OrderDate</th> <th align="left"><input type="text" name="OrderDate" value='<?php echo $OrderDate;?>' readonly="" /></th> </tr> <tr> <th width="80">VendorCode</th> <th width="1225" align="left"><input type="text" name="VendorCode" value='<?php echo $VendorCode;?>' readonly="" /></th> </tr> </table> <table width="1313" border="0"> <tr> <td width="44">&nbsp;</td> <td width="71">SNO</td> <td width="527">DESCRIPTION</td> <td width="214">QUANTITY</td> <td width="214">RATE/UNIT</td> <td width="217">AMOUNT</td> </tr> <?php $i=1; $row=mysql_query("select * from inv where Name='$nam'"); while($row1=mysql_fetch_array($row)) { $descofgoods=$row1['descofgoods']; $Qty=$row1['Qty']; $Rate=$row1['Rate']; $Amount=$row1['Amount']; ?> <tr> <td><input type="checkbox" name="checkbox" value="checkbox" /></td> <td><input type="text" name="No" value='<?php echo $No;?>' readonly=""/></td> <td><input type="text" name="descofgoods" value='<?php echo $descofgoods;?>' /></td> <td><input type="text" name="qty" maxlength="50000000" id="qty"/></td> <td><input type="text" name="Rate" value='<?php echo $Rate;?>' id="rate" onclick="ram()";></td> <td><input type="text" name="Amount" id="amt"/></td> </tr> <?php $i++;} ?> <tr> <th colspan="2"><a href="pp.php?msg=<?php echo $nam;?>">Print</a></th> </tr> </table> <label></label> </form> </body> </html> - <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <title></title> <script type = "text/javascript"> function a() { var q = document.getElementsByName('Amount'); var count = 0; for (i = 0; i < q.length; i++) count += parseInt(q[i].value,10); document.getElementById('s').value = count; } </script> </head> <?php $con = mysql_connect("localhost","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("form1", $con); error_reporting(E_ALL ^ E_NOTICE); $nam=$_GET['msg']; $row=mysql_query("select * from inv where Name='$nam'"); while($row1=mysql_fetch_array($row)) { $Name=$row1['Name']; $Address =$row1['Address']; $City=$row1['City']; $Pincode=$row1['Pincode']; $No=$row1['No']; $Date=$row1['Date']; $DCNo=$row1['DCNo']; $DcDate=$row1['DcDate']; $YourOrderNo=$row1['YourOrderNo']; $OrderDate=$row1['OrderDate']; $VendorCode=$row1['VendorCode']; $SNo=$row1['SNo']; $descofgoods=$row1['descofgoods']; $Qty=$row1['Qty']; $Rate=$row1['Rate']; $Amount=$row1['Amount']; } ?> <body> <form id="form1" name="form1" method="post" action=""> <table width="846" border="0"> <tr> <td width="411" height="113">&nbsp;</td> <td width="412">&nbsp;</td> </tr> </table> <table width="846" border="0"> <tr> <td height="38">&nbsp;</td> </tr> </table> <table width="846" border="0"> <tr> <td width="390" rowspan="4">&nbsp;</td> <td width="92" height="35">&nbsp;</td> <td width="136"><?php echo $No;?></td> <td width="36">&nbsp;</td> <td width="170"><?php echo $Date;?></td> </tr> <tr> <td height="37">&nbsp;</td> <td><?php echo $DCNo;?></td> <td>&nbsp;</td> <td><?php echo $DcDate;?></td> </tr> <tr> <td height="34">&nbsp;</td> <td><?php echo $YourOrderNo;?></td> <td>&nbsp;</td> <td><?php echo $OrderDate;?></td> </tr> <tr> <td height="29">&nbsp;</td> <td><?php echo $VendorCode;?></td> <td>&nbsp;</td> <td>&nbsp;</td> </tr> </table> <table width="845" border="0"> <tr> <td height="38">&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> </tr> <tr> <td width="34">&nbsp;</td> <td width="457">&nbsp;</td> <td width="104">&nbsp;</td> <td width="79">&nbsp;</td> <td width="149">&nbsp;</td> </tr> <?php $i=1; $row=mysql_query("select * from inv where Name='$nam'"); while($row1=mysql_fetch_array($row)) { $descofgoods=$row1['descofgoods']; $Qty=$row1['Qty']; $Rate=$row1['Rate']; $Amount=$row1['Amount']; ?> <tr> <td><?php echo $i;?></td> <td><?php echo $descofgoods;?></td> <td><?php echo $Qty;?></td> <td><?php echo $Rate;?></td> <td><input name="Amount" type = "text" value="<?php echo $Amount; ?>" /></td> </tr> <?php $i++;} ?> </table> <table width="844" border="0"> <tr> <td width="495" height="1065">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="text" name="textfield2" width="150" /> &nbsp; &nbsp; &nbsp; &nbsp; </td> <td width="191">&nbsp;</td> <td width="144"><input type="text" name="to" id="s" onclick="a()";/></td> </tr> </table> </form> </body> </html>

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  • SPARC T4-4 Beats 8-CPU IBM POWER7 on TPC-H @3000GB Benchmark

    - by Brian
    Oracle's SPARC T4-4 server delivered a world record TPC-H @3000GB benchmark result for systems with four processors. This result beats eight processor results from IBM (POWER7) and HP (x86). The SPARC T4-4 server also delivered better performance per core than these eight processor systems from IBM and HP. Comparisons below are based upon system to system comparisons, highlighting Oracle's complete software and hardware solution. This database world record result used Oracle's Sun Storage 2540-M2 arrays (rotating disk) connected to a SPARC T4-4 server running Oracle Solaris 11 and Oracle Database 11g Release 2 demonstrating the power of Oracle's integrated hardware and software solution. The SPARC T4-4 server based configuration achieved a TPC-H scale factor 3000 world record for four processor systems of 205,792 QphH@3000GB with price/performance of $4.10/QphH@3000GB. The SPARC T4-4 server with four SPARC T4 processors (total of 32 cores) is 7% faster than the IBM Power 780 server with eight POWER7 processors (total of 32 cores) on the TPC-H @3000GB benchmark. The SPARC T4-4 server is 36% better in price performance compared to the IBM Power 780 server on the TPC-H @3000GB Benchmark. The SPARC T4-4 server is 29% faster than the IBM Power 780 for data loading. The SPARC T4-4 server is up to 3.4 times faster than the IBM Power 780 server for the Refresh Function. The SPARC T4-4 server with four SPARC T4 processors is 27% faster than the HP ProLiant DL980 G7 server with eight x86 processors on the TPC-H @3000GB benchmark. The SPARC T4-4 server is 52% faster than the HP ProLiant DL980 G7 server for data loading. The SPARC T4-4 server is up to 3.2 times faster than the HP ProLiant DL980 G7 for the Refresh Function. The SPARC T4-4 server achieved a peak IO rate from the Oracle database of 17 GB/sec. This rate was independent of the storage used, as demonstrated by the TPC-H @3000TB benchmark which used twelve Sun Storage 2540-M2 arrays (rotating disk) and the TPC-H @1000TB benchmark which used four Sun Storage F5100 Flash Array devices (flash storage). [*] The SPARC T4-4 server showed linear scaling from TPC-H @1000GB to TPC-H @3000GB. This demonstrates that the SPARC T4-4 server can handle the increasingly larger databases required of DSS systems. [*] The SPARC T4-4 server benchmark results demonstrate a complete solution of building Decision Support Systems including data loading, business questions and refreshing data. Each phase usually has a time constraint and the SPARC T4-4 server shows superior performance during each phase. [*] The TPC believes that comparisons of results published with different scale factors are misleading and discourages such comparisons. Performance Landscape The table lists the leading TPC-H @3000GB results for non-clustered systems. TPC-H @3000GB, Non-Clustered Systems System Processor P/C/T – Memory Composite(QphH) $/perf($/QphH) Power(QppH) Throughput(QthH) Database Available SPARC Enterprise M9000 3.0 GHz SPARC64 VII+ 64/256/256 – 1024 GB 386,478.3 $18.19 316,835.8 471,428.6 Oracle 11g R2 09/22/11 SPARC T4-4 3.0 GHz SPARC T4 4/32/256 – 1024 GB 205,792.0 $4.10 190,325.1 222,515.9 Oracle 11g R2 05/31/12 SPARC Enterprise M9000 2.88 GHz SPARC64 VII 32/128/256 – 512 GB 198,907.5 $15.27 182,350.7 216,967.7 Oracle 11g R2 12/09/10 IBM Power 780 4.1 GHz POWER7 8/32/128 – 1024 GB 192,001.1 $6.37 210,368.4 175,237.4 Sybase 15.4 11/30/11 HP ProLiant DL980 G7 2.27 GHz Intel Xeon X7560 8/64/128 – 512 GB 162,601.7 $2.68 185,297.7 142,685.6 SQL Server 2008 10/13/10 P/C/T = Processors, Cores, Threads QphH = the Composite Metric (bigger is better) $/QphH = the Price/Performance metric in USD (smaller is better) QppH = the Power Numerical Quantity QthH = the Throughput Numerical Quantity The following table lists data load times and refresh function times during the power run. TPC-H @3000GB, Non-Clustered Systems Database Load & Database Refresh System Processor Data Loading(h:m:s) T4Advan RF1(sec) T4Advan RF2(sec) T4Advan SPARC T4-4 3.0 GHz SPARC T4 04:08:29 1.0x 67.1 1.0x 39.5 1.0x IBM Power 780 4.1 GHz POWER7 05:51:50 1.5x 147.3 2.2x 133.2 3.4x HP ProLiant DL980 G7 2.27 GHz Intel Xeon X7560 08:35:17 2.1x 173.0 2.6x 126.3 3.2x Data Loading = database load time RF1 = power test first refresh transaction RF2 = power test second refresh transaction T4 Advan = the ratio of time to T4 time Complete benchmark results found at the TPC benchmark website http://www.tpc.org. Configuration Summary and Results Hardware Configuration: SPARC T4-4 server 4 x SPARC T4 3.0 GHz processors (total of 32 cores, 128 threads) 1024 GB memory 8 x internal SAS (8 x 300 GB) disk drives External Storage: 12 x Sun Storage 2540-M2 array storage, each with 12 x 15K RPM 300 GB drives, 2 controllers, 2 GB cache Software Configuration: Oracle Solaris 11 11/11 Oracle Database 11g Release 2 Enterprise Edition Audited Results: Database Size: 3000 GB (Scale Factor 3000) TPC-H Composite: 205,792.0 QphH@3000GB Price/performance: $4.10/QphH@3000GB Available: 05/31/2012 Total 3 year Cost: $843,656 TPC-H Power: 190,325.1 TPC-H Throughput: 222,515.9 Database Load Time: 4:08:29 Benchmark Description The TPC-H benchmark is a performance benchmark established by the Transaction Processing Council (TPC) to demonstrate Data Warehousing/Decision Support Systems (DSS). TPC-H measurements are produced for customers to evaluate the performance of various DSS systems. These queries and updates are executed against a standard database under controlled conditions. Performance projections and comparisons between different TPC-H Database sizes (100GB, 300GB, 1000GB, 3000GB, 10000GB, 30000GB and 100000GB) are not allowed by the TPC. TPC-H is a data warehousing-oriented, non-industry-specific benchmark that consists of a large number of complex queries typical of decision support applications. It also includes some insert and delete activity that is intended to simulate loading and purging data from a warehouse. TPC-H measures the combined performance of a particular database manager on a specific computer system. The main performance metric reported by TPC-H is called the TPC-H Composite Query-per-Hour Performance Metric (QphH@SF, where SF is the number of GB of raw data, referred to as the scale factor). QphH@SF is intended to summarize the ability of the system to process queries in both single and multiple user modes. The benchmark requires reporting of price/performance, which is the ratio of the total HW/SW cost plus 3 years maintenance to the QphH. A secondary metric is the storage efficiency, which is the ratio of total configured disk space in GB to the scale factor. Key Points and Best Practices Twelve Sun Storage 2540-M2 arrays were used for the benchmark. Each Sun Storage 2540-M2 array contains 12 15K RPM drives and is connected to a single dual port 8Gb FC HBA using 2 ports. Each Sun Storage 2540-M2 array showed 1.5 GB/sec for sequential read operations and showed linear scaling, achieving 18 GB/sec with twelve Sun Storage 2540-M2 arrays. These were stand alone IO tests. The peak IO rate measured from the Oracle database was 17 GB/sec. Oracle Solaris 11 11/11 required very little system tuning. Some vendors try to make the point that storage ratios are of customer concern. However, storage ratio size has more to do with disk layout and the increasing capacities of disks – so this is not an important metric in which to compare systems. The SPARC T4-4 server and Oracle Solaris efficiently managed the system load of over one thousand Oracle Database parallel processes. Six Sun Storage 2540-M2 arrays were mirrored to another six Sun Storage 2540-M2 arrays on which all of the Oracle database files were placed. IO performance was high and balanced across all the arrays. The TPC-H Refresh Function (RF) simulates periodical refresh portion of Data Warehouse by adding new sales and deleting old sales data. Parallel DML (parallel insert and delete in this case) and database log performance are a key for this function and the SPARC T4-4 server outperformed both the IBM POWER7 server and HP ProLiant DL980 G7 server. (See the RF columns above.) See Also Transaction Processing Performance Council (TPC) Home Page Ideas International Benchmark Page SPARC T4-4 Server oracle.com OTN Oracle Solaris oracle.com OTN Oracle Database 11g Release 2 Enterprise Edition oracle.com OTN Sun Storage 2540-M2 Array oracle.com OTN Disclosure Statement TPC-H, QphH, $/QphH are trademarks of Transaction Processing Performance Council (TPC). For more information, see www.tpc.org. SPARC T4-4 205,792.0 QphH@3000GB, $4.10/QphH@3000GB, available 5/31/12, 4 processors, 32 cores, 256 threads; IBM Power 780 QphH@3000GB, 192,001.1 QphH@3000GB, $6.37/QphH@3000GB, available 11/30/11, 8 processors, 32 cores, 128 threads; HP ProLiant DL980 G7 162,601.7 QphH@3000GB, $2.68/QphH@3000GB available 10/13/10, 8 processors, 64 cores, 128 threads.

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  • Multiple update panels and multiple postbacks cause entire page to refresh...

    - by Matt
    I'm having the same problem I had yesterday... The solution Aristos provided helped solve the problem, but I have other places sending updatepanel postbacks causing the same problem. When an update panel is updated and another request for an update is called before it has a chance to render the first updates, the entire page refreshes instead of just the update panel. I used fiddler to see what was going on and here's what happens... If I wait for the request to return before doing another request I get this: 21443|updatePanel|dnn_ctr1107_CRM_SalesTool_LeadsUpdatePanel| But if I don't wait, I get this: 66|pageRedirect||http://mysite.com/salesdashboard.aspx| The code from the previous question is still the same except I added UpdateMode="Conditional" to the update panel. Any ideas? Or is the only solution to this making sure that 2+ updates for any number of update panels (as long as they're on the same page) never happen? Thanks, Matt

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  • How to refresh an Android RelativeLayout when orientation changes without restarting the Activity?

    - by johnrock
    I have an Android Activity with a RelativeLayout and I have implemented the following method to prevent the activity from being recreated on change of Orientation: @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); } I am obviously not doing anything in this method, but it worked perfect when using a LinearLayout. Now however, using RelativeLayout, my layout is all messed up when changing to landscape orientation. What is the most efficient way to have the screen redraw correctly without having the activity restarted again with a call to onCreate?

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  • How to make the subview in a UIScrollView to refresh when we zoom it?

    - by wolverine
    I have subclassed UIView object inside a uiscrollview which displays a pdf page. I can zoom that page. But when I do so, the inside view is zoomed and is getting blurred. I understood that the inner view shud be refreshed and i called setNeedsDisplay. But no change have happened and its the same even now. Below is the code for drawRect for the subclassed uiview. - (void)drawRect:(CGRect)rect { if(document)//the pdf document object { CGContextRef ctx = UIGraphicsGetCurrentContext(); CGContextSaveGState(ctx); CGContextTranslateCTM(ctx, 0.00, [self bounds].size.height); NSLog(@"%f",[self bounds].size.height); CGContextScaleCTM(ctx, 1.0, -1.0); CGContextConcatCTM(ctx, CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, [self bounds], 0, true)); CGContextDrawPDFPage(ctx, page); CGContextRestoreGState(ctx); } }

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  • Detect and record a sound with python

    - by Jean-Pierre
    I'm using this program to record a sound in python: import pyaudio import wave import sys chunk = 1024 FORMAT = pyaudio.paInt16 CHANNELS = 1 RATE = 44100 RECORD_SECONDS = 5 WAVE_OUTPUT_FILENAME = "output.wav" p = pyaudio.PyAudio() stream = p.open(format = FORMAT, channels = CHANNELS, rate = RATE, input = True, frames_per_buffer = chunk) print "* recording" all = [] for i in range(0, RATE / chunk * RECORD_SECONDS): data = stream.read(chunk) all.append(data) print "* done recording" stream.close() p.terminate() write data to WAVE file data = ''.join(all) wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb') wf.setnchannels(CHANNELS) wf.setsampwidth(p.get_sample_size(FORMAT)) wf.setframerate(RATE) wf.writeframes(data) wf.close() I want to change the program to start recording when sound is detected by the sound card input. Probably should compare the input sound level in Chunk, but how do this?

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  • How to refresh Mono ASP.NET page without restarting the web server?

    - by Hao
    When I make changes to a file, Mono ASP.NET doesn't see my changes, I have to do this: sudo /etc/init.d/apache2 restart I remember hen Mono ASP.NET executes ASP.NET it caches the compilation somewhere. Before, when the updated page doesn't come up, I just delete that cached compiled code. I just forgot the exact path How to make Mono ASP.NET that I have changed the program without restarting the web server?

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  • JPA : Inheritance - Discriminator value not taken into account in generated SQL

    - by Julien
    I try to use this mapping : @Entity @Table(name="ecc.\"RATE\"") @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name="DISCRIMINATOR", discriminatorType= DiscriminatorType.STRING) public abstract class Rate extends GenericBusinessObject { ... } @Entity @DiscriminatorValue("E") public class EntranceRate extends Rate { @ManyToOne @JoinColumn(name = "\"RATES_GRID_ID\"") protected RatesGrid ratesGrid; ... } @Entity @Table(name="ecc.\"RATES_GRID\"") public class RatesGrid extends GenericBusinessObject { /** */ @OneToMany(mappedBy = "ratesGrid", targetEntity = EntranceRate.class, fetch=FetchType.LAZY) private List<EntranceRate> entranceRates; } When I try to access my entranceRates list from a ratesGrid object, I get this error : Object with id: 151 was not of the specified subclass: com.ecc.bo.rate.EntranceRate (loaded object was of wrong class class com.ecc.bo.rate.AnnualRate) Looking at the sql generated, I found no trace of "discriminator=" in the where clause. What am I doing wrong ? I use a PostGreSQL database and a Hibernate as JPA provider.

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  • asp.net mvc: What is the correct way to return html from controller to refresh select list?

    - by Mark Redman
    Hi, I am new to ASP.NET MVC, particularly ajax operations. I have a form with a jquery dialog for adding items to a drop-down list. This posts to the controller action. If nothing (ie void method) is returned from the Controller Action the page returns having updated the database, but obviously there no chnage to the form. What would be the best practice in updating the drop down list with the added id/value and selecting the item. I think my options are: 1) Construct and return the html manually that makes up the new <select> tag [this would be easy enough and work, but seems like I am missing something] 2) Use some kind of "helper" to construct the new html [This seems to make sense] 3) Only return the id/value and add this to the list and select the item [This seems like an overkill considering the item needs to be placed in the correct order etc] 4) Use some kind of Partial View [Does this mean creating additional forms within ascx controls? not sure how this would effect submitting the main form its on? Also unless this is reusable by passing in parameters(not sure how thats done) maybe 2 is the option?] UPDATE: Having looked around a bit, it seems that generating html withing the controller is not a good idea. I have seen other posts that render partialviews to strings which I guess is what I need and separates concerns (since the html bits are in the ascx). Any comments on whether that is good practice.

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  • Local Data Cache - How do I refresh the local db when I add fields to remote db?

    - by Chu
    I'm using a Local Data Cache in an ASP.NET 3.5 environment. I made a change in my main database by adding a new field. I double click on my .SYNC file in my project to startup the Local Data Cache wizard again. The wizard starts and I click OK with the hopes that it'll re-query my database and add the new field to the local database file. Instead, I get an error saying "Synchronizing the databae failed with the message: Unable to enumerate changes at the DbServerSyncProvider..." The only way I know to get things working again is to delete the .SYNC file along with the local database and start it from scratch. There's got to be an easier way... anyone know it?

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  • How can I force a jQuery plugin to refresh the data it has loaded?

    - by Ben Dauphinee
    I am working with jQuery Pagination, and a popup form. On saving the data in the form, how would I go about forcing the Pagination plugin to reload the data it would load for whatever page I am on, without reloading the entire webpage? Ex: Item 1 Item 2 Item 3 Add Item-Item 23-Save-Reload List Item 1 Item 2 Item 3 Item 23 http://d-scribe.de/webtools/jquery-pagination/lib/jquery_pagination/README

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  • On-demand refresh mode for indexed view (=Materialized views) on SQL Server?

    - by MOLAP
    I know Oracle offers several refreshmode options for their materialized views (on demand, on commit, periodically). Does Microsoft SQLServer offer the same functions for their indexed views? If not, how can I else use indexed views on SQLServer if my purpose is to export data on a daily+ on-demand basis, and want to avoid performance overhead problems? Does a workaround exist?

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