Search Results

Search found 66801 results on 2673 pages for 'near real time'.

Page 656/2673 | < Previous Page | 652 653 654 655 656 657 658 659 660 661 662 663  | Next Page >

• write-through RAM disk, or massive caching of file system?

  - by Will

  I have a program that is very heavily hitting the file system, reading and writing randomly to a set of working files. The files total several gigabytes in size, but I can spare the RAM to keep them all mostly in memory. The machines this program runs on are typically Ubuntu Linux boxes. Is there a way to configure the file system to have a very very large cache, and even to cache writes so they hit the disk later? I understand the issues with power loss or such, and am prepared to accept that. Crashing aside, in normal operation the writes should eventually reach the disk! Or is there a way to create a RAM disk that writes-through to real disk?

  Read the article

• How to diagnose very slow pagefile

  - by svick

  Quite often, one of the applications I use freezes (“does not respond”) for a while, in extreme cases for few minutes. This happens especially when when switching apps. During this time, the HDD light flashes constantly and perfmon show that HDD is used 100% of the time (OTOH, CPU isn't) and that pagefile is being read (which is to be expected when switching apps), but at a very slow rate. When I sort the disk table in perfmon by read or write, the file read and wrote the most is the pagefile, but it's still quite low rate (I don't remember the numbers). How can I diagnose what's causing this? I use Windows Vista, and the computer is quite ordinary two years old laptop.

  Read the article

• Where did this incorrect cached DNS lookup come from?

  - by Stephen Jennings

  Somehow, I've been having a chronic issue where my computer will get an invalid DNS lookup in its cache for either of the two Exchange servers I use from Mail.app. My workplace runs one of the Exchange servers and I run the other (they are totally unrelated, hosted by different companies, etc.). The problem manifests as a certificate domain error. When it happens, I can run nslookup mail.mydomain.com and I see the incorrect IP address (usually owned by either Apple or Akamai), but if I run nslookup mail.mydomain.com 8.8.8.8, I get the correct address. My real quest is to find out why this keeps happening, and to do that, I'd like to know which server is supplying me this bad DNS entry. Is there a way to check my DNS cache to see where this bad lookup came from?

  Read the article

• Setting the Timezone with an automated script

  - by Tom

  I'm writing scripts to automate setting up new slicehost installations. In a perfect world, after I started the script, it would just run, with no attention from me. I have succeeded, with one exception. How do I set the timezone, in a permanent (survive reboot) and sane (adjust for standard and daylight savings time, so no just forcing the date) ... manner that doesn't require input from me? Currently, I'm using dpkg-reconfigure tzdata This doesn't seem to have any way to force parameters into it. It demands user input. EDIT: I'm editing here, rather than commenting, since comments don't seem to allow code blocks. Here's the actual code I ended up with, based on Rudedog's comment below. I also noticed that this doesn't update /etc/timezone. I'm not certain who uses that, but in case anybody does, I'm setting that too. TIMEZONE="America/Los_Angeles" echo $TIMEZONE > /etc/timezone cp /usr/share/zoneinfo/${TIMEZONE} /etc/localtime # This sets the time

  Read the article

• Is there any website editor (html) for Firefox

  - by blade19899

  There are a lot of webdeveloper addons available, for Firefox, like firebug. But is there a html editor addon for Firefox. Which I can edit my website. Viewing the edits real-time (using localhost or via ftp?) and saving the edits(CTRL+S) I am currenlty using firebug and it would save a lot of time if I could save the (local) .html file using a firebug like addon!(or firebug itself?) I Found a firebug addon to save .css files... now just need one to save html, and I am good to go!

  Read the article

• Causes of hard crashes on Windows XP and how to debug

  - by Sam Brightman

  I am occasionally seeing hard lockups on XP: totally unresponsive to keyboard/mouse, screen freezes at time of crash, no SSH/VNC possible. Very intermittent, nothing in the logs. I never see a blue screen on any kind of error message. This morning I logged in via VNC, logged out again, 20 minutes later physically sat at PC and it crashed around the time of VNC logout. I tend to suspect video cards in these kind of situations but it's a modern-ish card with modern drivers (one revision back, but this has been happening for 5 revisions or more) and normally would at least see a blue screen I expect. What would you suspect? Where can I look or what can I set up for more information? Bear in mind that this happens about once every 3 or 4 weeks, so extensive logging or intrusive monitoring isn't really an option.

  Read the article

• bash process uses 90% CPU, comes back on computer restart

  - by Sano

  I’ve replaced the old HDD of my late 2008 unibody MacBook (8 GB of RAM, running OS X 10.7.4) with an OCZ Vertex 3 SSD. After doing this, I've installed Lion and restored my data from a Time Machine backup. Everything is fine, except for a process named “bash” that permanently uses about 90 % CPU. If I kill it via Activity Monitor, everything goes back to normal, but unfortunately the process comes back every time I restart the computer. I've tried do zap the PRAM, reinstall 10.7.4 from the combo package, and even simply wait for more than 2 hours, but the problem is still here.

  Read the article

• Linux Logitech QuickCam Pro 9000 - microphone issues

  - by drahnr

  I got a Logitech Quickcam Pro 9000, the cam itself is working as it honors the UVC spec. This fancy WebCam has a integrated mic which worked some time before but now, it does no more. (Note: I use pulseaudio as it is a USB Mic and I am not really keen on the hassle of ALSA setup) Things I check already are if it gets detected at all: $ lsusb |grep Logi Bus 002 Device 002: ID 046d:0809 Logitech, Inc. Webcam Pro 9000 is muted in alsa-mixer - not the case, volume at 100 pavucontrol shows it too, but no input level bar! On top of that, if I open the gnome3 (fallback mode) audio panel(from the desktop panel), and disabel/reenable it in the hardware tab, it works "for some time"... Any hints? Any ideas? I am really out options for now, and the fact it worked like 6 months ago (perfectly) makes it no better.

  Read the article

• qtcreator keyboard problem: azerty/qwerty

  - by Allen

  I picked up the qt SDK and I've been trying it out. I'm working in English but I have a French AZERTY keyboard. When I run Qt Designer all is fine. When I run Qt Creator or Qt Designer from within Qt Creator things work as though I had a QWERTY keyboard, so I have to hit the "q" key to get an "a", etc. Qt Creator is version 1.3.1 and it is using Qt 4.6.2. My PC is running XP. What is going on and what is to be done? Any ideas? Editing a program in this setup is, of course, impossible! Luckily I discovered I can use an external editor, so I can use xemacs, which would be my first choice anyway, but this keyboard problem is a real nuisance! Thanks.

  Read the article

• Nagios configuration management

  - by HannesFostie

  I am going to implement Nagios (most likely anyway, could turn out to be another tool as well) and I was wondering if anyone would like to share their best practices when it comes to creating, managing and maintaining the config files when it comes to scalability and managability as I find that it might quickly become a real big mess. Any tips, examples or even full configurations would be most welcome and I'd happily look them over. Tools would be welcome as well. Tried out NConf so far, but the generated config files don't seem to do what was promised (not including the parent information for one, and just a PITA to get them working - they generate a ton of errors when checking the config files with the script supplied by nagios) Thanks

  Read the article

• Run as different user on a shortcut

  - by PhilPursglove

  How do I do this in Windows 7? On Windows XP I had the ability to mark a shortcut as being run by a different user, so that every time I ran it it would prompt me for a username/password. This let me have two shortcuts for things like SQL Server Management Studio, one for my normal account and one for my Domain Admins account which has access to production servers. I can get to the 'Run as different user' option with Shift+right-click, but I can't see an option anywhere that would let me mark the shortcut as doing this every time.

  Read the article

• Which kerberos flavor?

  - by Michael Lowman

  So I'm setting up a small network with all the standard stuff (files, email, etc.) and I've decided to go with a Kerberos+LDAP solution. Any ideas or recommendations on Heimdal vs. MIT? I've used MIT before, and tangentially Heimdal, but I don't really know of any real reason for using one over the other. I just know that I'd prefer not to realize I'd rather be running MIT after getting the whole Heimdal up and running with a full user database. If any other info'd be useful, I'm happy to provide.

  Read the article

• How do I backup Credentials Manager passwords (Windows 7)

  - by Andrew J. Brehm

  I am trying to create a backup of my stored passwords in Credentials Manager. But after Windows switches to the secure desktop to get the password for the backup file it simply announced that "Your stored logon credentials could not be backed up" and gives as explanation "Element not found", neither of which is helpful. (In fact I hate the "X could not Y" type of error message). I am an administrator on the machine and there is only one password in Credentials Manager. The sole point of the backup is to create a nearly empty Credentials Manager so that I don't have to delete manually hundreds of password entries every time I have to change my domain password. (I think Microsoft haven't throught this through properly. There appears to be no way to delete more than one entry at a time.) Any ideas?

  Read the article

• HOWTO Catch/Redirect all outgoing e-mails on Win2K and Redhat Enterprise

  - by John

  Background: I am integrating two separate web application that are developed in ASP .NET and JSP/Struts. As such, they are hosted on two different server technologies, namely Win2K3 and Redhat Enterprise Server 5.5. Problem: There is a copy of production data in my test environment with real e-mail addresses. I need to test the e-mail functionality of these applications, but I do not want them to send out actual e-mails. Is there a way to catch and redirect all outgoing e-mails? Ideally, I would like to send all outgoing e-mails to another e-mail (i.e., [email protected]) so my testers can look at them. Thanks for the help in advance!

  Read the article

• What does the "Maximum Frequency" number mean in the Windows Resource Monitor?

  - by nhinkle

  In the Windows Resource Monitor's CPU tab, there is a status box and graph for the "Maximum Frequency", right next to the "CPU Usage" values. What does this mean? The value is sometimes over 100% on my system... what could that imply? By looking at CPU-z's real-time report of the processor's clock speed, it seems to be loosely related to what frequency the CPU is running at, which would imply that it means "percent of maximum possible frequency the CPU is running at"; this would be of relevance on systems with SpeedStep and/or TurboBoost technology (or similar). Furthermore, setting the system to "power saving mode" lowers the "maximum frequency" value to around 60%, while setting it to "high performance" mode sets it to around 110%. However, the percentage does not seem to exactly correlate to the CPU speed being shown. What value is this actually representing then?

  Read the article

• Make ZoneAlarm stop pausing my C programs when I run them

  - by rMaero

  I'm using Dev-C++ to develop some console apps to study. When my program tries to run system("PAUSE"); ZA stops it and asks me to allow or deny it. I check the "always" box but it seems that every time I compile it, it generates a new exe file so every time I run it ZA pops up. Of course the simplest solution is to disable it or deal with it :-P but I'm not eager for any of both. Any suggestions? thanks in advance!

  Read the article

• SQL Server Performance & Latching

  - by Colin

  I have a SQL server 2000 instance which runs several concurrent select statements on a group of 4 or 5 tables. Often the performance of the server during these queries becomes extremely diminished. The querys can take up to 10x as long as other runs of the same query, and it gets to the point where simple operations like getting the table list in object explorer or running sp_who can take several minutes. I've done my best to identify the cause of these issues, and the only performance metric which I've found to be off base is Average Latch Wait time. I've read that over 1 second wait time is bad, and mine ranges anywhere from 20 to 75 seconds under heavy use. So my question is, what could be the issue? Shouldn't SQL be able to handle multiple selects on a single table without losing so much performance? Can anyone suggest somewhere to go from here to investigate this problem? Thanks for the help.

  Read the article

• Is there windows equivalent of the .bashrc file in linux?

  - by herrturtur

  Just discovered doskey emacs=emacs -nw $*, but without something like .bashrc, I'll have to type that every time I start a shell, right?

  Read the article

• Shaping outbound Traffic to Control Download Speeds with Linux

  - by Kyle Brandt

  I have a situation where a server makes lots of requests from big webservers all at the same time. Currently, I have not control over the amount of requests or the rate of the requests from the application that does this. The responses from these webservers is more than the internet line can handle. (Basically, we are launching a DoS on ourselves). I am going to get push to get this fixed at the application level, but for the time being, is there anyway I can use traffic shaping on the Linux server to control this? I know I can only shape outbound traffic, but maybe there is a way I can slow the TCP responses so the other side will detect congestion and this will help my situation? If there is anything like this with tc, what might the configuration look like? The idea is that the traffic control might help me control which packets get dropped before they reach my router.

  Read the article

• Anyone know where I can download a copy of Sun Java System Active Server Pages 4.0.3 for Solaris

  - by ewengcameron

  I've contacted Sun regarding this and they have told me that the download is no longer available as Active Server Pages 4.0.3 is now End Of Life. We need to upgrade our server to 4.0.3 to acheive PCI-DSS compliance. Anyone know of a site where I can download older copies of Sun files? Sun offer 4.0.1 and 4.0.2 to download but not 4.0.3 which is going to cause problems come October when Visa stops accepting transactions from non PCI compliant servers. If Sun kept their naming system consistent across versions, the file would be called "sjsasp403-sol-sparc.tar". I know the real solution is to upgrade every site on the server to use a different server language, i.e. PHP, and in the long term, this is our goal but we have over 100 sites requiring upgrading and its not a viable solution to get this done before October.

  Read the article

• VIDEO Streaming - How to output the video timestamp?

  - by Emmanuel Brunet

  I would like to backup an ASF video stream with the time stamp (I mean the original recording date/time) on the output stream ? Usage I convert / store my video using the mkv format (Matroska) with libx264 (video) and aac (audio) codecs. Assume the IP camera webcam user account is account, the password password $ ffmpeg -i http://admin:alpha1237@webcam/videostream.asf -c:v libx264 -s 768X432 -crf 13 -b:v 2500K -pix_fmt yuv420p -c:a libfdk_aac output.mkv This works fine on a tenvis JPT3815W camera How to I need to get the video timestamp available for display as a subtitle or other meta data field managed by standard video players, and ideally to be able to hide it or not during video reading. Does anybody knows how to achieve that ? Thanks in advance for your help.

  Read the article

• DHCPD Offering ip address on wrong subnet

  - by Logan

  I just recently added a new subnet for our wireless network to our DHCP configuration for the 192.168.254.0 subnet. Most of the time when wireless clients connect it works just fine. However, sometimes on seemingly random occasions the DHCP server will send out a DHCPOFFER with an IP address on the wrong subnet. Example: dhcpd: DHCPDISCOVER from MACADDRESS (ThinkBook2) via 192.168.254.1 dhcpd: DHCPOFFER on 192.168.22.236 to MACADDRESS (ThinkBook2) via 192.168.254.1 Here is the subnet configuration in dhcpd.conf: subnet 192.168.254.0 netmask 255.255.255.0 { option routers 192.168.254.1; range 192.168.254.34 192.168.254.254; default-lease-time 14400; authoritative; } How can I make sure the server always sends out an IP address on the right subnet?

  Read the article

• Architecture behind live streaming [on hold]

  - by l19

  I'm a Comp Sci undergraduate student, and I'm currently trying to understand the architecture behind streaming. I hear several terms and I'm not quite sure how they are related (e.g. streaming, broadcasting, ingesting, etc.) Is there a blog post or book that explains: How it all works in a high-level view (the workflow) The architecture (i.e. I capture content using my camera and want to display it real-time to an audience. I imagine that the content will be transferred to a server, but how does that server transmit the information to several users simultaneously?) Thanks!

  Read the article

• 4K sectors: Why are hard drives moving to 4096 byte sectors, vs. 512 byte sectors? Are 4K sectors a

  - by Chris W. Rea

  I've noticed that some Western Digital hard drives are now sporting 4K sectors, that is, the sectors are larger: 4096 bytes vs. the actual de facto standard of 512 bytes. So: What's the big deal with 4K sectors? Is it marketing hype, or a real advantage? Why should somebody building a new PC care, or not, about 4K sectors? Why is this transition taking place now? Why didn't it happen sooner? Are there things to look out for when buying a 4K sector hard drive? e.g. incompatibility? Anything else we should know about 4K sectors?

  Read the article

• Saving music wisely: Why save 'Queen - Bohemian Rhapsody.mp3' millions of times?

  - by hsmit

  As far as I'm concerned, Queen's song 'bohemian rhapsody' is one of the most popular songs all time. But for the purpose of this message you may replace this with another track. At the same time I think 60% of the digital-music listeners have this track. Sometimes we have multiple copies: different versions of the track, different devices, unwanted duplicates in download folders, itunes folders etc.. Wouldn't it be much smarter to store these songs only once? You can imagine various solutions for this. How would you accomplish this? Some criteria that may help you find an answer: It must reduce disk space It must remember which music belongs to you (DRM) It must use network traffic efficiently

  Read the article

< Previous Page | 652 653 654 655 656 657 658 659 660 661 662 663  | Next Page >