[CentOS] CPU utils almost 100%-- solved---but still a query

fabian fabian at baladia.gov.kw
Tue Jul 14 16:28:30 UTC 2009


Dear All,

I had solved the problem earlier of CPU wait state being almost 100% and
had solved the problem of disbling the cron job of tmpwatch

-rwxr-xr-x 1 root root   290 Jul  5 21:24 tmpwatch

which is a cron.daily file

now more investigations reveleved to me that

since im running havp 0.89 with squid
i have a directory created by havp in

/var/tmp

drwxrwx---  2 havp havp 71536640 Jul 14 18:15 havp

now if i do a cd /var/tmp
i go to tmp directory which is fine

then if i say

cd havp

my machine hangs and i see that the cpu wait state shoots upto 100%
now i tried goin in asingle user mode and the same problem

i ty to delete this directory i cannot

actually since the tmpwatch cron job was clearing files in /var/tmp/havp
it was hangging

apprecite some help n advice how to get reid of this directory

Regards

Fabian



> fabian wrote:
>> Dear Guys
>>
>> Thanks and apprecite your quick replies
>> By the way i had stated solving the problem of almost 100% CPU
>> utulization
>> starting everyday at 4 am and ending at 10 am in a very crude way
>> top was reporting 95% wa
>>
>> i started to check the crontab file and noticed that the
>> cron.daily entry in the file sarts at 4 am
>>
>> and in the directory i found
>>
>>
>> -rwxr-xr-x   1 root root   133 Jul  6 16:59 00webalizer
>> -rwxr-xr-x   1 root root   379 Jul  6 17:02 0anacron
>> lrwxrwxrwx   1 root root    39 Nov  9  2008 0logwatch ->
>> /usr/share/logwatch/scripts/logwatch.pl
>> drwxr-xr-x   2 root root  4096 Jul  5 21:25 backup
>> -rw-r--r--   1 root root    62 Jul  6 17:37 clamav
>> -rwxr-xr-x   1 root root   118 Jul  6 17:00 cups
>> -rwxr-xr-x   1 root root   456 Nov  3  2008 freshclam
>> -rwxr-xr-x   1 root root    26 Jul  6 17:00 havp
>> -rwxr-xr-x   1 root root   180 Dec  2  2007 logrotate
>> -rwxr-xr-x   1 root root   418 Jan  6  2007 makewhatis.cron
>> -rwxr-xr-x   1 root root   137 Jul  6 17:23 mlocate.cron
>> -rwxr-xr-x   1 root root  2181 Jun 21  2006 prelink
>> -rwxr-xr-x   1 root root   114 Jul  6 17:01 rpm
>> -rwxr-xr-x 1 root root   290 Jul  5 21:24 tmpwatch
>>
>>
>> i started movies some of thes files to difereent directory and finally
>> found that it was the below file that was the culprit
>>
>> -rwxr-xr-x 1 root root   290 Jul  5 21:24 tmpwatch
>> -------
>> the contents of the file was
>>
>> /usr/sbin/tmpwatch -x /tmp/.X11-unix -x /tmp/.XIM-unix -x
>> /tmp/.font-unix \
>>         -x /tmp/.ICE-unix -x /tmp/.Test-unix 240 /tmp
>> /usr/sbin/tmpwatch 720 /var/tmp
>> for d in /var/{cache/man,catman}/{cat?,X11R6/cat?,local/cat?}; do
>>     if [ -d "$d" ]; then
>>         /usr/sbin/tmpwatch -f 720 "$d"
>>     fi
>> done
>> ----------------
>>
>> now everything works fine without this file in the /etc/cron.daily
>> directory
>> so the tmpwatch was the culprit cause the CPU wait state to almost 99 %
>> for almost 6 hrs
>> but jus would like to know if this particular script has any signifance
>> or
>> any perfomance issue and my system will run perfect without the file
>>
>>
>> apprecite you help
>>
>>
>> regards
>>
>> Fabian
>>
>>
>>
> man tmpwatch shows that this is designed to cleanup tmp directories -
> you may want to see why your tmp files are either very many or have some
> other issues
> HTH
> Rob
>
>
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