Too many procs

4 messages in this thread

list Alexander Bech · Wed, 24 May 2017 13:50:54 +0200 ·

Hi all,

We have several webserver with 24000 started apache2 processes.
Xymonclient message is too large and are dropped.

Does anyone have experience with this problem?


Regards,
Alex

list Jeremy Laidman · Wed, 24 May 2017 22:53:03 +1000 ·

That's a lot of processes! I'm guessing they're actually threads rather
than processes, but the "ps" listing in Xymon is showing the threads
separately. Do all of the httpd processes have the same process ID?

You might be able to have the threads collapsed into a single line in the
process listing by adjusting the "ps" command line on your client. What OS
are you running? On Linux, the "-T" switch enables displaying of separate
threads, so if that's in your Xymon client settings, you would want to
remove that.

You can also increase the limit for client messages by adjusting
MAXMSG_CLIENT in xymonserver.cfg. But better to reduce the message size
than increase the limit, if you're able to.

J

▸ quoted from Alexander Bech



On 24 May 2017 at 21:50, Alexander Bech <user-bd67b1e4c445@xymon.invalid> wrote:

Hi all,

We have several webserver with 24000 started apache2 processes.
Xymonclient message is too large and are dropped.

Does anyone have experience with this problem?


Regards,
Alex

list Alex · Wed, 24 May 2017 21:22:24 +0200 ·

Am 24.05.2017 um 14:53 schrieb Jeremy Laidman:

That's a lot of processes! I'm guessing they're actually threads rather than processes, but the "ps" listing in Xymon is showing the threads separately. Do all of the httpd processes have the same process ID?

There are apache2 prefork processes.
www-data 27440  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start
www-data 27441  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start
www-data 27442  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start
www-data 27443  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start
www-data 27444  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start

It is a webserver for presentation of election results.
It must concurrently satisfy a great number of visitors on the election day.

▸ quoted from Jeremy Laidman

You might be able to have the threads collapsed into a single line in the process listing by adjusting the "ps" command line on your client. What OS are you running? On Linux, the "-T" switch enables displaying of separate threads, so if that's in your Xymon client settings, you would want to remove that.

You can also increase the limit for client messages by adjusting MAXMSG_CLIENT in xymonserver.cfg. But better to reduce the message size than increase the limit, if you're able to.

I try my best.

▸ quoted from Jeremy Laidman

J


On 24 May 2017 at 21:50, Alexander Bech <user-bd67b1e4c445@xymon.invalid <mailto:user-bd67b1e4c445@xymon.invalid>> wrote:

    Hi all,

    We have several webserver with 24000 started apache2 processes.
    Xymonclient message is too large and are dropped.

    Does anyone have experience with this problem?


    Regards,
    Alex


    <

list Alexander Bech · Tue, 30 May 2017 11:01:11 +0200 ·

Have a solution.


# clientlocal.cfg on xymon-server:
toomanyprocs:/usr/sbin/apache2 -k start|/usr/sbin/anotherproc|/usr/sbin/anotherproc2


# ps section on xymon-client:

echo "[ps]"
PROCSTOCUT=`cat ${LOGFETCHCFG} | grep "^toomanyprocs:" | awk -F: '{print $2}'`
if test -z "$PROCSTOCUT"; then
  ps -Aww f -o pid,ppid,user,start,state,pri,pcpu,time:12,pmem,rsz:10,vsz:10,cmd
else
  ps -Aww f -o pid,ppid,user,start,state,pri,pcpu,time:12,pmem,rsz:10,vsz:10,cmd | egrep -v "${PROCSTOCUT}"
  ORIGIFS=${IFS}; IFS="|"
  for PROC in ${PROCSTOCUT}
  do
     ps -Aww f -o pid,ppid,user,start,state,pri,pcpu,time:12,pmem,rsz:10,vsz:10,cmd | grep "${PROC}" | grep -v grep | head -n 2
  done
fi
IFS=${ORIGIFS}

Result: only two lines in client message.

Am 24.05.2017 um 21:22 schrieb Alex:

▸ quoted from Alex

Am 24.05.2017 um 14:53 schrieb Jeremy Laidman:

That's a lot of processes! I'm guessing they're actually threads rather than processes, but the "ps" listing in Xymon is showing the threads separately. Do all of the httpd processes have the same process ID?

There are apache2 prefork processes.
www-data 27440  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start
www-data 27441  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start
www-data 27442  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start
www-data 27443  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start
www-data 27444  0.0  0.0  71164  4192 ?        S    May23   0:00 /usr/sbin/apache2 -k start

It is a webserver for presentation of election results.
It must concurrently satisfy a great number of visitors on the election day.

You might be able to have the threads collapsed into a single line in the process listing by adjusting the "ps" command line on your client. What OS are you running? On Linux, the "-T" switch enables displaying of separate threads, so if that's in your Xymon client settings, you would want to remove that.

You can also increase the limit for client messages by adjusting MAXMSG_CLIENT in xymonserver.cfg. But better to reduce the message size than increase the limit, if you're able to.

I try my best.

J


On 24 May 2017 at 21:50, Alexander Bech <user-bd67b1e4c445@xymon.invalid <mailto:user-bd67b1e4c445@xymon.invalid>> wrote:

    Hi all,

    We have several webserver with 24000 started apache2 processes.
    Xymonclient message is too large and are dropped.

    Does anyone have experience with this problem?


    Regards,
    Alex


    <

Too many procs 🔗 link

Too many procs