Re: MPM default config and conf/extra/httpd-mpm.conf
On 6/15/2010 10:36 AM, Rainer Jung wrote: I noticed, that the values in conf/extra/httpd-mpm.conf in parts differ hugely from the corresponding MPM defaults. IMHO activating conf/extra/httpd-mpm.conf should be safe in the sense that you don't get changed MPM behaviour as long as you don't change the file contents. If we think the values in conf/extra/httpd-mpm.conf are better than the defaults, those should be the defaults. +1 If people agree, I would first correct conf/extra/httpd-mpm.conf to contain the actual defaults, and of course if we think those are not good, we can then improve them. -0, there's no need to wait to discuss and fix the source code. Examples: - MaxRequestsPerChild (for most MPMs default is 1 - pretty low nowadays, in the config it's 0) - MaxClients for event and worker: default 400, in the config 250 ... many more ... Regards, Rainer
Re: MPM default config and conf/extra/httpd-mpm.conf
On 15.06.2010 17:58, William A. Rowe Jr. wrote: On 6/15/2010 10:36 AM, Rainer Jung wrote: I noticed, that the values in conf/extra/httpd-mpm.conf in parts differ hugely from the corresponding MPM defaults. IMHO activating conf/extra/httpd-mpm.conf should be safe in the sense that you don't get changed MPM behaviour as long as you don't change the file contents. If we think the values in conf/extra/httpd-mpm.conf are better than the defaults, those should be the defaults. +1 If people agree, I would first correct conf/extra/httpd-mpm.conf to contain the actual defaults, and of course if we think those are not good, we can then improve them. -0, there's no need to wait to discuss and fix the source code. Sorry Bill, don't get it here: what do you suggest? Applying the existing values from conf/extra/httpd-mpm.conf to the MPM source code? Regards, Rainer
Re: MPM default config and conf/extra/httpd-mpm.conf
On 6/15/2010 11:33 AM, Rainer Jung wrote: Sorry Bill, don't get it here: what do you suggest? Applying the existing values from conf/extra/httpd-mpm.conf to the MPM source code? Just suggesting we don't really need to 'normalize' these first. Discuss the appropriate values on dev@ and commit the fix in the corresponding place(s) :)
Re: MPM default config and conf/extra/httpd-mpm.conf
- Rainer Jung rainer.j...@kippdata.de wrote: I noticed, that the values in conf/extra/httpd-mpm.conf in parts differ hugely from the corresponding MPM defaults. IMHO activating conf/extra/httpd-mpm.conf should be safe in the sense that you don't get changed MPM behaviour as long as you don't change the file contents. If we think the values in conf/extra/httpd-mpm.conf are better than the defaults, those should be the defaults. If people agree, I would first correct conf/extra/httpd-mpm.conf to contain the actual defaults, and of course if we think those are not good, we can then improve them. Examples: - MaxRequestsPerChild (for most MPMs default is 1 - pretty low nowadays, in the config it's 0) - MaxClients for event and worker: default 400, in the config 250 ... many more ... I wonder if this thread is wrong enough for the topic: Would it be possible to choose defaults for the MPMs based on the available CPU(core)s and the Memory, rather than just hard coding the values? Regards, Rainer So long, -- Igor Galić Tel: +43 (0) 699 122 96 338 Fax: +43(0) 1 91 333 41 Mail: i.ga...@brainsware.org URL: http://brainsware.org/
Re: MPM default config and conf/extra/httpd-mpm.conf
On 15.06.2010 22:51, Igor Galić wrote: - Rainer Jungrainer.j...@kippdata.de wrote: I noticed, that the values in conf/extra/httpd-mpm.conf in parts differ hugely from the corresponding MPM defaults. IMHO activating conf/extra/httpd-mpm.conf should be safe in the sense that you don't get changed MPM behaviour as long as you don't change the file contents. If we think the values in conf/extra/httpd-mpm.conf are better than the defaults, those should be the defaults. If people agree, I would first correct conf/extra/httpd-mpm.conf to contain the actual defaults, and of course if we think those are not good, we can then improve them. Examples: - MaxRequestsPerChild (for most MPMs default is 1 - pretty low nowadays, in the config it's 0) - MaxClients for event and worker: default 400, in the config 250 ... many more ... I wonder if this thread is wrong enough for the topic: Would it be possible to choose defaults for the MPMs based on the available CPU(core)s and the Memory, rather than just hard coding the values? I doubt it's worth it and that we can make it work nicely. I think we are looking for a mid-size configuration that neither optimizes on tiny systems (saving as much resources as possible) nor on high load systems (extreme scaling) but instead for the huge number on configurations in between, that hope to work reasonable with default sizing. If we are talking about auto-detecting system resources: Memory and CPU in these cases often is not only used for httpd because it is not the only application on the system. If we want the user to assign those resources I doubt we can find good formulas. Rainer
Re: MPM default config and conf/extra/httpd-mpm.conf
I wonder if this thread is wrong enough for the topic: Would it be possible to choose defaults for the MPMs based on the available CPU(core)s and the Memory, rather than just hard coding the values? I doubt it's worth it and that we can make it work nicely. I think we are looking for a mid-size configuration that neither optimizes on tiny systems (saving as much resources as possible) nor on high load systems (extreme scaling) but instead for the huge number on configurations in between, that hope to work reasonable with default sizing. If we are talking about auto-detecting system resources: Memory and CPU in these cases often is not only used for httpd because it is not the only application on the system. If we want the user to assign those resources I doubt we can find good formulas. ACK. Then it's probably best to set sane defaults which will work well and work well everywhere. In the config we could then provide hints how to scale it up or down. Rainer Bye -- Igor Galić Tel: +43 (0) 699 122 96 338 Fax: +43(0) 1 91 333 41 Mail: i.ga...@brainsware.org URL: http://brainsware.org/
Re: MPM default config and conf/extra/httpd-mpm.conf
On 6/15/2010 4:15 PM, Rainer Jung wrote: On 15.06.2010 22:51, Igor Galić wrote: I wonder if this thread is wrong enough for the topic: Would it be possible to choose defaults for the MPMs based on the available CPU(core)s and the Memory, rather than just hard coding the values? I doubt it's worth it and that we can make it work nicely. I think we are looking for a mid-size configuration that neither optimizes on tiny systems (saving as much resources as possible) nor on high load systems (extreme scaling) but instead for the huge number on configurations in between, that hope to work reasonable with default sizing. If we are talking about auto-detecting system resources: Memory and CPU in these cases often is not only used for httpd because it is not the only application on the system. If we want the user to assign those resources I doubt we can find good formulas. The subject sounds like it's just crying out for additional lua magic :)
