Am 25.04.2016 um 20:00 schrieb Cohen, Laurence:
Hi, I really appreciate your response. What I'd like to know is, how do I look up this information on my own? I use this mailing list generally as a last resort when I can't find the answer myself. In the case, I did a lot of research before I asked my question, but couldn't get a definitive answer. If you could point me to the documentation that you are using I'd greatly appreciate it.
Since you are still using the slightly outdated 2.2, the page https://httpd.apache.org/docs/2.2/en/mod/mpm_common.html is the official documentation. Looking at for instance https://httpd.apache.org/docs/2.2/en/mod/mpm_common.html#threadlimit and https://httpd.apache.org/docs/2.2/en/mod/mpm_common.html#serverlimitthere's at least some sort of info about restarts and how the params relate to each other. But maybe not as easy to grok as it should be.
Regards, Rainer
On Mon, Apr 25, 2016 at 4:32 AM, Rainer Jung <rainer.jung@xxxxxxxxxxx <mailto:rainer.jung@xxxxxxxxxxx>> wrote: ServerLimit and ThreadLimit configure the size of an internal structure which maintains data about processes and threads. This structure is only created during Apache start, so if you want to change these two params, you need to stop and start. ThreadsPerChild and MaxClients can be changed and activates with "apachectl graceful", no need to restart. Only if ThreadsPerChild needs to get increased higher than ThreadLimit, or MaxClients/ThreadsPerChild needs to be increased higher than ServerLimit, you need to adjust these as well and therefore need a completely new start. So if you want to reserve some reserve space for ThreadsPerChild or MaxClients, you should configure ThreadLimit = ThreadsPerChild + "reserved additional threads" and ServerLimit = MaxClients/ThreadsPerChild + "reserved additional clients"/ThreadsPerChild. HTH, Rainer Am 24.04.2016 um 21:28 schrieb Cohen, Laurence: Thanks, I should have mentioned that I'm running Apache HTTPD 2.2 on a RHEL6.7 system. There it is tied to MaxClients which is getting changed at restart. I believe, according to this that I need to do a full stop and start to get this to work. Thanks for your help! Larry On Sun, Apr 24, 2016 at 3:22 PM, Ben RUBSON <ben.rubson@xxxxxxxxx <mailto:ben.rubson@xxxxxxxxx> <mailto:ben.rubson@xxxxxxxxx <mailto:ben.rubson@xxxxxxxxx>>> wrote: https://httpd.apache.org/docs/current/en/mod/mpm_common.html#serverlimit Le 24 avr. 2016 à 21:20, Cohen, Laurence <lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx> <mailto:lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx>>> a écrit : Thank you! Which doc are you reading? I'd like to look at it. On Sun, Apr 24, 2016 at 3:08 PM, Ben RUBSON <ben.rubson@xxxxxxxxx <mailto:ben.rubson@xxxxxxxxx> <mailto:ben.rubson@xxxxxxxxx <mailto:ben.rubson@xxxxxxxxx>>> wrote: Reading the doc, seems that ServerLimit is related to MaxRequestWorkers (which has a default set to 256). Ben Le 24 avr. 2016 à 20:52, Cohen, Laurence <lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx> <mailto:lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx>>> a écrit : Hello, While reloading httpd did increase MaxClients to 400 as specified, it did not increase ServerLimit to 400 as specified. What is worse is that since ServerLimit remained at 256, this caused MaxClients to be reduced to 256 since ServerLimit seems to be the hard limit for MaxClients. Even more frustrating is that when I did a service httpd restart, it not only did not increase ServerLimit to 400, but it threw an error that the attempt to increase ServerLimit during a restart was ignored. Any ideas why I cannot increase the ServerLimit? Thanks, Laurence Cohen On Sun, Apr 24, 2016 at 11:15 AM, Ben RUBSON <ben.rubson@xxxxxxxxx <mailto:ben.rubson@xxxxxxxxx> <mailto:ben.rubson@xxxxxxxxx <mailto:ben.rubson@xxxxxxxxx>>> wrote: Hi, reload will do it ! Ben Le 24 avr. 2016 à 17:14, Cohen, Laurence <lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx> <mailto:lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx>>> a écrit : Hi, I need to increase my httpd server's MaxClients and ServerLimit. Can I just do a service httpd reload to load the new settings? Or do I need to do a service httpd restart to load the new settings? This is on a production server with active users, so obviously the former is preferable. Thanks, Larry Cohen -- www.novetta.com <http://www.novetta.com> Larry Cohen System Administrator 12021 Sunset Hills Road, Suite 400 Reston, VA 20190 Email lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx> <http://novetta.com/> Office 703-885-1064 -- www.novetta.com <http://www.novetta.com> Larry Cohen System Administrator 12021 Sunset Hills Road, Suite 400 Reston, VA 20190 Email lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx> <http://novetta.com/> Office 703-885-1064 -- www.novetta.com <http://www.novetta.com> Larry Cohen System Administrator 12021 Sunset Hills Road, Suite 400 Reston, VA 20190 Email lcohen@xxxxxxxxxxx <mailto:lcohen@xxxxxxxxxxx> <http://novetta.com> Office 703-885-1064 --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx <mailto:users-unsubscribe@xxxxxxxxxxxxxxxx> For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx <mailto:users-help@xxxxxxxxxxxxxxxx> -- www.novetta.com Larry Cohen System Administrator 12021 Sunset Hills Road, Suite 400 Reston, VA 20190 Email lcohen@xxxxxxxxxxx <http://novetta.com> Office 703-885-1064
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