On Mon, Apr 25, 2016 at 3:23 PM, Rainer Jung <rainer.jung@xxxxxxxxxxx> wrote:
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Since you are still using the slightly outdated 2.2, the page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#serverlimit
there'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:ben.rubson@xxxxxxxxx <mailto:ben.rubson@xxxxxxxxx>>> wrote:<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>
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:ben.rubson@xxxxxxxxx
<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>>> 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
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Larry Cohen
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12021 Sunset Hills Road, Suite 400
Reston, VA 20190
Email lcohen@xxxxxxxxxxx
<mailto:lcohen@xxxxxxxxxxx> <http://novetta.com/>
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--
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
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