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• MacBook Pro (2007 - ATI-Card) Screen goes half black then shuts down the entire computer

  - by BluePerry

  Hey, when I'm starting my MBP I get about 10-60 seconds of the booting process before the screen goes half black (Its like applying a black to transparent gradient from the left side of the screen to the middle of the screen). After a 5 seconds the entire screen blacks out and the MBP shuts down. There have been issues with heat and some minor artifacts on the screen in the past but nothing serious as far as I know. Everything could be resolved by rebooting or letting the MBP cool down a bit. I would like to identify the problem now. There are 3 possibilities I can think of right now: My graphics card is defect and shuts down after a few seconds. (But if thats true, I find it kind of hard to explain the HALF black screen) My LCD-Panel is defect and sends back wrong signals so the system shuts down??? (I not sure about that) My fan or/and thermal sensors are defect and forcing the graphics card to shut down. Can anyone point if I'm right or if there yet another reason for this. I'd be thankful for any hint or tips. Cheers, Per

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• TCP Keepalive and firewall killing idle sessions

  - by Carlos A. Ibarra

  In a customer site, the network team added a firewall between the client and the server. This is causing idle connections to get disconnected after about 40 minutes of idle time. The network people say that the firewall doesn't have any idle connection timeout, but the fact is that the idle connections get broken. In order to get around this, we first configured the server (a Linux machine) with TCP keepalives turned on with tcp_keepalive_time=300, tcp_keepalive_intvl=300, and tcp_keepalive_probes=30000. This works, and the connections stay viable for days or more. However, we would also like the server to detect dead clients and kill the connection, so we changed the settings to time=300,intvl=180,probes=10, thinking that if the client was indeed alive, the server would probe every 300s (5 minutes) and the client would respond with an ACK and that would keep the firewall from seeing this as an idle connection and killing it. If the client was dead, after 10 probes, the server would abort the connection. To our surprise, the idle but alive connections get killed after about 40 minutes as before. Wireshark running on the client side shows no keepalives at all between the server and client, even when keepalives are enabled on the server. What could be happening here? If the keepalive settings on the server are time=300,intvl=180,probes=10, I would expect that if the client is alive but idle, the server would send keepalive probes every 300 seconds and leave the connection alone, and if the client is dead, it would send one after 300 seconds, then 9 more probes every 180 seconds before killing the connection. Am I right? One possibility is that the firewall is somehow intercepting the keepalive probes from the server and failing to pass them on to the client, and the fact that it got a probe makes it think that the connection is active. Is this common behavior for a firewall? We don't know what kind of firewall is involved. The server is a Teradata node and the connection is from a Teradata client utility to the database server, port 1025 on the server side, but we have seen the same problem with an SSH connection so we think it affects all TCP connections.

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• Without an internet connection my computer loads programs slowly. With an internet connection they load quickly

  - by Peter pete

  Gday. I've a laptop, with 8gb of RAM and a Samsung 830 SSD with about 2/5th of free space out of its 256gb. Win7 64b. Laptop is a Toshiba T130. In the other day I noticed that it took a long time to load a program, for example the python interpreter at the time the computer didn't have access to the home network. In both cases the computer boots quickly. About 40 seconds. Without internet opening the python interpreter, or notepad2.exe, or any program individually takes around 10 seconds. With internet connection (through WiFi) opening the same programs takes about 2 seconds. In both cases, it becomes SSD-instant-quick to open a program from a cold boot. I don't have any network mapped drives. I've tried with AV off (Avast antivirus) and same effect. I've installed all MS updates. I've googled and googled and have found nothing of help. I've run the Samsung SSD magician to "optimise" ssd and that didn't help. What could I do to determine & fix this issue?

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• One workstation gets slow access to the server, but others are fast

  - by Mike Hanson

  I've just setup a machine with Windows Server 2008. It hosts various services, like IIS, POP3, SMTP, Music for Squeezeboxes, VNC. All was working well for the first week or so. One day I needed to create a mapped drive on the server, so it could access files on my workstation. Windows indicated that Network Discovery was needed, so I turned it on with the "Home / Office" option (rather than "Public"). This may be coincidence, but since that time I've been having troubles accessing various services from my main workstation (running Windows 7/64): POP3 continued working correctly, but SMTP was delayed or failed entirely. (Telnet took 20 seconds to connect, but Outlook would never send messages.) VNC failed entirely. I reinstalled it on the server, and now it works but feels sluggish. The music web server was extremely delayed and usually failed. I tried reinstalling, and now it takes about 30 seconds to show the page name on the browser tab, and another 30 seconds to display any page contents. Other machines on the local network seem fine, as do machines connected via the Internet. I don't believe I changed anything on my own machine that would cause this. I considered the possibility that my anti-virus was involved, so I uninstalled AVG (commercial version), but that didn't help. I installed Norton 360 after that, and it didn't complain of viruses on my machine, and the delays remained. Because only my machine is affect, I'm tempted to blame it, except that reinstalling software on the server improved the situation, so there is almost certainly something going on with the server too. The firewall has all the necessary ports open, and it works fine for the other workstations (including external machines connected via the Internet), which indicates that it should be OK. Any ideas?

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• Strange File-Server I/O Spikes - What Is Causing This?

  - by CruftRemover

  I am currently having a problem with a small Linux server that is providing file-sharing services to four Windows 7 32-bit clients. The server is an AMD PhenomX3 with two Western Digital 10EADS (1TB) drives, attached to a Gigabyte GA-MA770T-UD3 mainboard and running Ubuntu Server 10.04.1 LTS. The client machines are taking an extremely long time to access/transfer data on the file server. Applications often become non-responsive while trying to open files located remotely, or one program attempting to open a file but having to wait will prevent other software from accessing network resources at all. Other examples include one image taking 20 seconds or more to open, and in one instance a user waited 110 seconds for Microsoft Word 2007 to save a document. I had initially thought the problem was network-related, but this appears not to be the case. All cables and switches have been tested (one cable was replaced) for verification. This was additionally confirmed when closing down all client machines and rebooting the server resulted in the hard-drive light staying on solid during the startup process. For the first 15 minutes during boot, logon and after logging on (with no client machines attached), the system displayed a load average of 4 or higher. Symptoms included waiting several minutes for the logon prompt to appear, and then several minutes for the password prompt to appear after typing in a user name. After logon, it also took upwards of 45 seconds for the 'smartctl' man page to appear after the command 'man smartctl' was issued. After 15 minutes of this behaviour, the load average dropped to around 0.02 and the machine behaved normally. I have also considered that the problem is hard-drive-related, however diagnostic programs reveal no drive problems. Western Digital DLG, Spinrite and SMARTUDM show no abnormal characteristics - the drives are in perfect health as far as the hardware is concerned. I have thus far been completely unable to track down the cause of this problem, so any help is greatly appreciated. Requested Information: Output of 'free' hxxp://pastebin.com/mfsJS8HS (stupid spam filter) The command 'hdparm -d /dev/sda1' reports: HDIO_GET_DMA failed: Inappropriate ioctl for device (the BIOS is set to AHCI - I probably should have mentioned that).

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• Rails application keeps timing out when attempting to connect to Postgresql DB

  - by Corillian

  I'm hosting a postgresql database on a small windows azure Ubuntu 13.04 VM with a default postgresql.conf. I have a Rails application running on a medium windows azure Ubuntu 13.04 VM. When accessing the postgresql database the rails application is constantly timing out. In its database.yml I have the connection pool size set to 120 and the timeout set to 15 seconds. Despite this my rails logs are full of the following error message: ActiveRecord::ConnectionTimeoutError: could not obtain a database connection within 5 seconds (waited 5.0023203 seconds). The max pool size is currently 120; consider increasing it. My postgresql.conf has a max connection limit of 120, making it any larger prevents the server from being able to successfully restart. I've also made sure that ssl was off in the postgresql.conf per this article but beyond that I have no idea what's going on. My postgresql logs don't contain any info indicating something is going wrong. My website is getting ~1k hits per day so perhaps a small VM instance just isn't powerful enough? I appreciate any assistance! [Edit1] The postgresql database is in a separate cloud service within the same affinity group. For example: db small VM: mydatabase.cloudapp.net (Affinity Group US East) forums medium VM: myforums.cloudapp.net (Affinity Group US East) On the database server I have opened port 5432. The connection to the database server from the forums server is using its hostname. Is it possible that the DNS resolution is what's taking so long?

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• Problems with Net::FTP slowing down

  - by c0bra

  I'm running into an issue with using Net::FTP (latest version 2.77) to transfer files to a remote host where a process is waiting to take the file and feed into some other system. The remote process does this every 5 minutes but ignores files that were modified in the last 0.2 seconds (that's right, 1/5th of a second). The problem is that for some reason the transfer seems to halt or slow down a bit and no data is transferred for several seconds and during this time the process picks up the incomplete file and removes it. The weird thing is that manually using the ftp binary the file seems to transfer fine. I've tried messing with all of the Net::FTP switches (Active/Passive, different Blocksizes) and nothing seems to help. What's also weird is that the file seems to transfer fairly quickly at first and on occasion a bit into the transfer. Like 300-500k will go up immediately, but then it slows down to where the file size is only increasing by 2,896 bytes every several seconds. It doesn't seem to happen when I try sending the file to a different remote host, but since a regular manual ftp transfer works with this host I don't know what to think. Some combination of Net::FTP and possibly a slow or wonky connection?

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• FTP Server upload and filesystem questions

  - by Alex

  I'm a photographer who mainly does event photography. A while ago I bought myself a Nikon WT-4 wireless transmitter, a small device which connects via USB to my Nikon D700 DSLR, and then establishes a WiFi connection to an existing WLAN. It can then upload any pictures I take via FTP to an FTP server somewhere in the network. On my laptop I then have a piece of software which will check a given folder on the disk regularly, this software is smart enough to look at the modified file timestamp, if this timestamp is less than 10 seconds ago, it will not attempt to import the folder and skip the file in this iteration of the import scan. The problem I've discovered seems to be inherent to the FTP protocol, as I have the same problem with Windows 7 built in IIS server, as I do with FileZilla FTP server. When the transmitter starts to upload a file, the FTP server will create a small 300-500 KB file with the correct filename on the disk, but then do nothing with the file until it has completely received the file via FTP. So it seems to create this small dummy file, and then buffer the remainder of the FTP upload until it's finished, and then dump the rest of the file into the dummy file making it the correct size. Problem is, these uploads take about 15-30 seconds depending on reception, but since the folder watch tool will already try to import any file older than 10 seconds, it will always try to import the small dummy files which obviously fails as they're not copmlete yet. Is there any way to 'disable' this behaviour? Ideally I would like my file only to show up once it's been completely uploaded. Or perhaps someone knows another FTP server application (it has to run on win7) which does not show this behaviour?

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• Website latency and bad tcp packets

  - by Mistero Lupo

  I have multiple websites hosted on a Linode VPS and I'm having an issue with one of them: every page that I try to load has about 10 seconds latency. Apache logs are clean and the other websites on the same machine are running well. At a first glance I tought it was a memory problem since the VPS has got only 512M, but from the linode dashboard CPU and Disk I/O are normal. Anyway here we have the ram status: $ free -m total used free shared buffers cached Mem: 487 463 23 0 2 55 -/+ buffers/cache: 404 82 Swap: 255 155 100 Only 23M free, but if it was a memory problem why other websites are going as usual? I took a live capture with wireshark, and there are some duplicates SYN ACK packets just before the 10 seconds gap. I'm out of ideas, looking for some clues. Wireshark live capture screenshot As you can see from the image, the gap is after the last bad tcp. Thank you in advance. UPDATE I've checked Apache2 logs in debug error level, and this is where something is appening: 151.97.156.191 - - [14/Nov/2012:11:19:40 +0100] [www.fmaisi.it/sid#7f32c625a220][rid#7f32c6801578/subreq] (3) [perdir /home/fmaisi/sites/www.fmaisi.it/public_html/] applying pattern '^index\.php$' to uri 'index.php' 151.97.156.191 - - [14/Nov/2012:11:19:40 +0100] [www.fmaisi.it/sid#7f32c625a220][rid#7f32c6801578/subreq] (1) [perdir /home/fmaisi/sites/www.fmaisi.it/public_html/] pass through /home/fmaisi/sites/www.fmaisi.it/public_html/index.php 151.97.156.191 - - [14/Nov/2012:11:19:54 +0100] [www.fmaisi.it/sid#7f32c625a220][rid#7f32c6537c78/initial] (3) [perdir /home/fmaisi/sites/www.fmaisi.it/public_html/] strip per-dir prefix: /home/fmaisi/sites/www.fmaisi.it/public_html/wp-content/plugins/wp-filebase/wp-filebase_css.php -> wp-content/plugins/wp-filebase/wp-filebase_css.php 151.97.156.191 - - [14/Nov/2012:11:19:54 +0100] [www.fmaisi.it/sid#7f32c625a220][rid#7f32c6537c78/initial] (3) [perdir /home/fmaisi/sites/www.fmaisi.it/public_html/] applying pattern '^index\.php$' to uri 'wp-content/plugins/wp-filebase/wp-filebase_css.php' As you can see there is a gap of 14 seconds after the pass through of index.php. Any suggestions? I'm out of ideas again.

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• SQL Server 2012 memory usage steadily growing

  - by pgmo

  I am very worried about the SQL Server 2012 Express instance on which my database is running: the SQL Server process memory usage is growing steadily (1.5GB after only 2 days working). The database is made of seven tables, each having a bigint primary key (Identity) and at least one non-unique index with some included columns to serve the majority of incoming queries. An external application is calling via Microsoft OLE DB some stored procedures, each of which do some calculations using intermediate temporary tables and/or table variables and finally do an upsert (UPDATE....IF @@ROWCOUNT=0 INSERT.....) - I never DROP those temporary tables explicitly: the frequency of those calls is about 100 calls every 5 seconds (I saw that the DLL used by the external application open a connection to SQL Server, do the call and then close the connection for each and every call). The database files are organized in only one filgegroup, recovery type is set to simple. Some questions to diagnose the problem: is that steadily growing memory normal? did I do any mistake in database design which probably lead to this behaviour? (no explicit temp-table drop, filegroup organization, etc) can SQL Server manage such a stored procedure call rate (100 calls every 5 seconds, i.e. 100 upsert every 5 seconds, beyond intermediate calculations)? do the continuous "open connection/do sp call/close connection" pattern disturb SQL Server? is it possible to diagnose what is causing such a memory usage? Perhaps queues of wating requests? (I ran sp_who2, but I didn't see a big amount of orphan connections from the external application) if I restrict the amount of memory which SQL Server is allowed to use, may I sooner or later get into trouble?

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• .bat file - Nagios v3.2 service check and start if stopped

  - by LbakerIT

  I'm just barely getting into programming so I do apologize for my ignorance. I'm trying to create a .bat file that will check if a service is running on XP Pro. If service is running it will exit 0. If the service is stopped start service wait 10 seconds (via ping i'm guessing) check if service is running if service is running exit 0 if service is stopped start service wait 10 seconds Do this check a total of 3 times. if service does not come up within that time: exit 2 Exit 0 = ok exit 1 = warning exit 3 = critical (and this will alert) I need to do this for 3 different services but i'm expecting that it would be better to create one per service. That way you get notified on the specific service that is not coming back up. The goal is that if the service stops it will start it. If after 30 seconds it is unable to start the service then it will send an alert. The reason I'm trying to do it with a .bat is this is consistent with all other scripts and I did not want to complicate it further by adding different kinds of code. Yay for consistency! Again I do apologize for my ignorance I've been thrown into this project last minute. Thank you for the help and reading my question!

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• How to support both HTTP and HTTPS channels in Flex/BlazeDS?

  - by digitalsanctum

  I've been trying to find the right configuration for supporting both http/s requests in a Flex app. I've read all the docs and they allude to doing something like the following: <default-channels> <channel ref="my-secure-amf"> <serialization> <log-property-errors>true</log-property-errors> </serialization> </channel> <channel ref="my-amf"> <serialization> <log-property-errors>true</log-property-errors> </serialization> </channel> This works great when hitting the app via https but get intermittent communication failures when hitting the same app via http. Here's an abbreviated services-config.xml: <channel-definition id="my-amf" class="mx.messaging.channels.AMFChannel"> <endpoint url="http://{server.name}:{server.port}/{context.root}/messagebroker/amf" class="flex.messaging.endpoints.AMFEndpoint"/> <properties> <!-- HTTPS requests don't work on IE when pragma "no-cache" headers are set so you need to set the add-no-cache-headers property to false --> <add-no-cache-headers>false</add-no-cache-headers> <!-- Use to limit the client channel's connect attempt to the specified time interval. --> <connect-timeout-seconds>10</connect-timeout-seconds> </properties> </channel-definition> <channel-definition id="my-secure-amf" class="mx.messaging.channels.SecureAMFChannel"> <!--<endpoint url="https://{server.name}:{server.port}/{context.root}/messagebroker/amfsecure" class="flex.messaging.endpoints.SecureAMFEndpoint"/>--> <endpoint url="https://{server.name}:{server.port}/{context.root}/messagebroker/amfsecure" class="flex.messaging.endpoints.AMFEndpoint"/> <properties> <add-no-cache-headers>false</add-no-cache-headers> <connect-timeout-seconds>10</connect-timeout-seconds> </properties> </channel-definition> I'm running with Tomcat 5.5.17 and Java 5. The BlazeDS docs say this is the best practice. Is there a better way? With this config, there seems to be 2-3 retries associated with each channel defined in the default-channels element so it always takes ~20s before the my-amf channel connects via a http request. Is there a way to override the 2-3 retries to say, 1 retry for each channel? Thanks in advance for answers.

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• iPhone NSDate - get time in milliseconds and store in coredata

  - by satyam

  I'm implementing iphone app with coredata functionality. I've an attribute in entity "NSDate" which stores the date and time when the record is added. I'm adding records at a faster rate. About 1 record per 25 milli seconds I want to store the date along with milli seconds so that I can retrieve the data in descending order. How can I do this?

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• Comet VS Ajax polling

  - by xRobot

  I need to create a chat like facebook chat. With Comet I need more memory to keep the connection. With Ajax polling there is a latency problem if I send request every 3-4 seconds. So... If the latency ( 3-4 seconds ) doesn't matter, Is Ajax Polling better for my case ?

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• NSTimer timestamp timeinterval question

  - by okami

  I have the following code: [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(timerCount:) userInfo:nil repeats:YES]; -(void)timerCount:(NSTimer *)timer { NSTimeInterval dt = [timer timeInterval]; // do something } The NSTimeInterval I got will be 0.5, the time interval I've put on scheduledTimerWithInterval, this means the timerCount will be called each 0.5 seconds. But I now that there are some stuff as timeStamps, and I want to know if the NSTimer will call the timerCount method in PRECISELY 0.5 seconds each time.

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• Regex slow on Windows Server 2008

  - by pjmyburg

  Hi I have a situation where my regular expressions compile extremely slowly on Windows Server 2008. I wrote a small console application to highlight this issue. The app generates its own input and builds up a Regex from words in an XML file. I built a release version of this app and ran it both on my personal laptop (running XP) and the Windows 2008 server. The regular expression took 0.21 seconds to compile on my laptop, but 23 seconds to compile on the server. Any ideas what could be causing this? The problem is only on first use of the Regex (when it is first compiled - thereafter it is fine) I have also found another problem - when using \s+ in the regular expression on the same Windows 2008 server, the memory balloons (uses 4GB+) and the compilation of the Regex never finishes. Is there a known issue with Regex and 64 bit .net? Is there a fix/patch available for this? I cannot really find any info on the net, but I have found a few articles about this same issues in Framework 2.0 - surely this has been fixed by now? More info: The server is running the 64 bit version of the .net framework (3.5 SP1) and on my laptop I have Visual Studio 2008 and the 3.5 framework installed. The regular expression is of the following pattern: ^word$|^word$|^word$ and is constructed with the following flags: RegexOptions.IgnoreCase | RegexOptions.Compiled Edit: Here is a code snippet: StringBuilder regexString = new StringBuilder(); if (!String.IsNullOrEmpty(fileLocation)) { XmlTextReader textReader = new XmlTextReader(fileLocation); textReader.Read(); while (textReader.Read()) { textReader.MoveToElement(); if (textReader.Name == "word") { regexString.Append("^" + textReader.GetAttribute(0) + "$|"); } } ProfanityFilter = new Regex(regexString.ToString(0, regexString.Length - 1), RegexOptions.IgnoreCase | RegexOptions.Compiled); } DateTime time = DateTime.Now; Console.WriteLine("\nIsProfane:\n" + ProfanityFilter.IsMatch("test")); Console.WriteLine("\nTime: " + (DateTime.Now - time).TotalSeconds); Console.ReadKey(); This results in a time of 0.21 seconds on my laptop and 23 seconds on the 2008 server. The XML file consists of 168 words in the following format: <word text="test" />

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• wats SIGSEGV, Segmentation fault in QT

  - by user269037

  I have a QT program which displays the data it receives over UDP. It works fine for around 30 seconds but after a while it gives Segmentation Fault and crashes. This 30 seconds is also not fixed. I used the debugger and got this Program received signal SIGSEGV, Segmentation fault. 0x003c6fd4 in ?? () from /usr/lib/libQtGui.so.4 Can anyone tell me where the error might be

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• Time Saving Minutiae

  - by Dave Jarvis

  What little tricks do you use to save time when developing? For example: In JDeveloper, change the default editor to Source view from Design view for JSP files.   Tools » Preferences » File Types » Default Editors » JSP Tag File By default, JDeveloper opens JSP files in Design view, which can take 10 to 15 seconds to begin editing a file. Opening files in Source view only takes 2 seconds.

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• notification scheduling question

  - by sims

  Hi Stackers! I'm building an app that needs to send out notifications to users depending on user definable "notifications". So the notifications are not per event. They are arbitrary. A cron job should query the database and send out emails when it finds an event with matching criterion. The is a scheduling app. So naturally, one of the criterion is time. I think I've figured it out, but I'm sure there are better ideas out there as it seems to be a fairly common thing to do. I think I'll limit the users ability to "minutes before hand" to get notified as opposed to seconds or hours. So I have an eventA and notificationA. notificationA should be triggered if an event is due within 45 minutes. So eventA starts at 17:30. The user should be notified at 16:45. But the cron job might not run exactly at 00 seconds. So when the difference is not 45 minutes and 0 seconds it is, say, 45 minutes and 5 seconds. Notification time is past. Email doesn't get sent. User misses event. Shugar. We should also take into account that the cron job might take a long time to run. So maybe we should only trigger it every 5 minutes. So we need a bigger interval maybe. So then my guess would be to say that: if ((eventDueTime - now notificationTimeValue - interval) && (eventDueTime - now < notificationTimeValue + interval)) sendTheFrikinNotificationAlready(); It seems kind of risky if the there are thousands of notifications to send out. I guess I could make a thread for each notification and then a thread for each event that matches the criterion. That might help. Does that make sense? Any other ideas? Thanks!

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• .Net Obfuscation

  - by Behrooz

  hi. as many of you know there is no copyright in some countries. I support copyrights myself, but in Iran: Windows Server 2008 =1$ king 2008 = 14$ MS SQL Server 2008 =50 Cents ... how can i prevent my code being Decompiled before 30 Seconds(I have lot's of videos witch Learn how to decompile in 30 Seconds). what is best obfuscator program(.Net) money can buy? does it have any Automated Anti obfuscation program?

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• setInterval By the minute On the minute

  - by bushman

  To the javascript enthusiasts, how would you program a setTimeOut (or setInterval) handle to fire by the minute on the minute. So for example, if it is the 51 second of the current time, then fire it in 8 seconds, if it is the 14th second then fire it in 46 seconds thanks

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• How does session_start lock in PHP?

  - by Morgan Cheng

  Originally, I just want to verify that session_start locks on session. So, I create a PHP file as below. Basically, if the pageview is even, the page sleeps for 10 seconds; if the pageview is odd, it doesn't. And, session_start is used to obtain the page view in $_SESSION. I tried to access the page in two tabs of one browser. It is not surprising that the first tab takes 10 seconds since I explicitly let it sleep. The second tab would not sleep, but it should be blocked by sessiont_start. That works as expected. To my surprise, the output of the second page shows that session_start takes almost no time. Actually, the whole page seems takes no time to load. But, the page does take 10 seconds to show in browser. obtained lock Cost time: 0.00016689300537109 Start 1269739162.1997 End 1269739162.1998 allover time elpased : 0.00032305717468262 The page views: 101 Does PHP extract session_start out of PHP page and execute it before other PHP statements? This is the code. <?php function float_time() { list($usec, $sec) = explode(' ', microtime()); return (float)$sec + (float)$usec; } $allover_start_time = float_time(); $start_time = float_time(); session_start(); echo "obtained lock<br/>"; $end_time = float_time(); $elapsed_time = $end_time - $start_time; echo "Cost time: $elapsed_time <br>"; echo "Start $start_time<br/>"; echo "End $end_time<br/>"; ob_flush(); flush(); if (isset($_SESSION['views'])) { $_SESSION['views'] += 1; } else { $_SESSION['views'] = 0; } if ($_SESSION['views'] % 2 == 0) { echo "sleep 10 seconds<br/>"; sleep(10); } $allover_end_time = float_time(); echo "allover time elpased : " . ($allover_end_time - $allover_start_time) . "<br/>"; echo "The page views: " . $_SESSION['views']; ?>

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• how to hide a tabbar at the app startupview?

  - by Georg

  here I continue my question, I do have an app structure like this: http://www.youtube.com/user/jamesshaw95#p/f/4/LBnPfAtswgw and I want to add a startupview displays for 3 seconds at the app starts then disappear, then user will see the content. but I am not able to remove the tabbar at the startupview, I want the startupview be a 320*480 picture which showing for 3 seconds then disappear, any help is highly appreciated!

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• Date arithmetic using integer values

  - by Dave Jarvis

  Problem String concatenation is slowing down a query: date(extract(YEAR FROM m.taken)||'-1-1') d1, date(extract(YEAR FROM m.taken)||'-1-31') d2 This is realized in code as part of a string, which follows (where the p_ variables are integers): date(extract(YEAR FROM m.taken)||''-'||p_month1||'-'||p_day1||''') d1, date(extract(YEAR FROM m.taken)||''-'||p_month2||'-'||p_day2||''') d2 This part of the query runs in 3.2 seconds with the dates, and 1.5 seconds without, leading me to believe there is ample room for improvement. Question What is a better way to create the date (presumably without concatenation)? Many thanks!

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• How to delay an animated sprite in Andengine?

  - by shailenTJ

  I have an animated Sprite that is drawn on the screen when I press the button. However, I want to the animation to start after 5 seconds. Technically, the ver first PNG in the "animation set" is shown and the animation starts after 5 seconds. I have tried to used the DelayModifier as follows, but without luck: mySprite.registerEntityModifier(new DelayModifier(500)); //doesn't work I would appreciate your input.

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