[squid-users] Fine tuning of Squid and OS configuration for handling more loads

[Alex Rousskov]

On 4/11/22 07:26, pvs wrote:

> cache.log file is attached with contents narrowed down to the time just 
> before squid process oscillating (going up and down), ultimately dying.

Your Squid v5.2 is probably suffering from bug #5055:
https://bugs.squid-cache.org/show_bug.cgi?id=5055

Upgrade your Squid to v5.4.1 or later.

> We tried to analyze the syslog file, squid access/cache log files,
> not got any concrete clues.

FWIW, look for messages mentioning words "FATAL":

> 2022/03/02 09:05:42 kid1| FATAL: check failed: opening()

>     exception location: tunnel.cc(1300) noteDestinationsEnd



HTH,

Alex.