Re: 100% CPU
This WebDNA talk-list message is from 2003
It keeps the original formatting.
numero = 53794
interpreted = N
texte = On Nov 3, 2003, at 6:37 PM, John Peacock wrote: > Jesse Proudman wrote: >> 1) Server is Running: Apache/1.3.27 (Unix) (Red-Hat/Linux) >> mod_ssl/2.8.12 OpenSSL/0.9.6b DAV/1.0.2 PHP/4.3.3 mod_perl/1.26 w/ >> WebCat unix-Linux Intel RedHat Apache Module version 5.1c > > Apache 1.3.29 is the current stable release. If Red-Hat doesn't have > an updated RPM, you should build it yourself (it's not hard). Do you > really need all those geegaws in your Apache? Specifically DAV has > security problems and mod_perl uses a lot of RAM for each child > process (you can run two versions of Apache to get around this latter > issue). If you aren't using each and everyone one of those features, > I would strongly suggest stripping them out of your conf file. Good call. I disabled DAV and Mod_perl, no changes. I'll see about upgrading to .29 but I don't think it will fix the CPU issue. >> 2) It's not bad code that's causing this because if I quit WebCat and >> then reopen it, it immediately reverts to 100% of the CPU. > > Disconnect the server from the 'Net and see whether that makes any > difference. It is very possible you are "under attack" from one of the > various worms. You can also check the Apache error log for some clue > to this (look for weird URL's with embedded ../'s). This will only > take a few minutes so even if this is a production server, hardly > anyone will notice it. I'll try that next >> 3) It's ACTUAL utilizing all 100% that it's taking. Other services >> are slowing down because they don't have access to the ticks they >> need. > > Try adding "nice" to the script which starts the WebCatalog engine. > This will at least keep the other services going until you can find > out what is going on. How exactly does that work? Just add the word "nice" into the execution. > 4) Make sure you don't have a rogue trigger running (though I would > think that the SMSI person would have checked that). No triggers. Thanks -- Jesse Williams-Proudman Blue Box Development :: Custom Web Solutions +1.206.778.8777 :: jesse@blueboxdev.com ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
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Associated Messages, from the most recent to the oldest:
On Nov 3, 2003, at 6:37 PM, John Peacock wrote: > Jesse Proudman wrote: >> 1) Server is Running: Apache/1.3.27 (Unix) (Red-Hat/Linux) >> mod_ssl/2.8.12 OpenSSL/0.9.6b DAV/1.0.2 PHP/4.3.3 mod_perl/1.26 w/ >> WebCat unix-Linux Intel RedHat Apache Module version 5.1c > > Apache 1.3.29 is the current stable release. If Red-Hat doesn't have > an updated RPM, you should build it yourself (it's not hard). Do you > really need all those geegaws in your Apache? Specifically DAV has > security problems and mod_perl uses a lot of RAM for each child > process (you can run two versions of Apache to get around this latter > issue). If you aren't using each and everyone one of those features, > I would strongly suggest stripping them out of your conf file. Good call. I disabled DAV and Mod_perl, no changes. I'll see about upgrading to .29 but I don't think it will fix the CPU issue. >> 2) It's not bad code that's causing this because if I quit WebCat and >> then reopen it, it immediately reverts to 100% of the CPU. > > Disconnect the server from the 'Net and see whether that makes any > difference. It is very possible you are "under attack" from one of the > various worms. You can also check the Apache error log for some clue > to this (look for weird URL's with embedded ../'s). This will only > take a few minutes so even if this is a production server, hardly > anyone will notice it. I'll try that next >> 3) It's ACTUAL utilizing all 100% that it's taking. Other services >> are slowing down because they don't have access to the ticks they >> need. > > Try adding "nice" to the script which starts the WebCatalog engine. > This will at least keep the other services going until you can find > out what is going on. How exactly does that work? Just add the word "nice" into the execution. > 4) Make sure you don't have a rogue trigger running (though I would > think that the SMSI person would have checked that). No triggers. Thanks -- Jesse Williams-Proudman Blue Box Development :: Custom Web Solutions +1.206.778.8777 :: jesse@blueboxdev.com ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/
Jesse Proudman
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