Re: 100% CPU
This WebDNA talk-list message is from 2003
It keeps the original formatting.
numero = 53792
interpreted = N
texte = 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. > > 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. > > 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. 4) Make sure you don't have a rogue trigger running (though I would think that the SMSI person would have checked that). John -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4720 Boston Way Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5747 ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
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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. > > 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. > > 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. 4) Make sure you don't have a rogue trigger running (though I would think that the SMSI person would have checked that). John -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4720 Boston Way Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5747 ------------------------------------------------------------- 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/
John Peacock
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