[CentOS] Fetchmail multiple instances increasing load average

[Rob Kampen]

On 12/29/2014 10:16 PM, Anshul Chauhan wrote:
> Hi,
>
> I’m running centos 5.7 with sendmail-8.13.8-8.1.el5_7,
> fetchmail-6.3.6-4.el5 and procmail-3.22-17.1.el5.centos. My server is
> having around 2000 mailboxes and this server used to fetch mails for all
> these users using fetchmail from the other MX server. I’ve configured the
> below cron job using webmin for downloading these mail
>
>   5,10,15,20,25,30,35,40,45,50,55 * * * * /etc/webmin/fetchmail/check.pl
> --file /var/log/fetchmaillog.
>
>
>
> But the load average for the server goes high automatically after every 4
> to 5 hours due to multiple fetchmail instances and after that I’ve to
> either kill all the fetchmail jobs or restart the server for making the
> system up again.
>
>
> Kindly suggest how can i reduce this load average issue or any other way
> out for downloading the mails from the parent server running on sendmail
> again.
get cron to call a script that establishes a lock file, thus next round 
of cron will not start fetchmail again until the first invocation completes.
> Warm Regards,
> Anshul Chauhan
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