Re: Slow-down every 30 secs

>
>
> Hello squid-users,
>
> I'd like to ask you for help with the following issue:
>
> We're running squid 1.1.20 on FreeBSD-2.2.5-Stable, with 256 MB RAM
> and 12 GB (3 x 4 GB SCSI-UW) of disk space dedicated to the cache.
>
> Unfortunately, we're experiencing the serious slow-down of all
> connections approximately every 30 secs. - see the attached netstat -w2
> output. When we try to connect to the squid in the slow-down interval,
> it accepts the connection at port 3128, however it does not return
> any data (we don't receive even an error message "Invalid request").
> After approx. 4 seconds of slow-down, everything works OK for next 26 secs.
> During the slow-down interval, the amount of memory dedicated to network
> significantly increases (from approx. 40 % to 70 % - see below the output
> of netstat -m)
>
Try

'sysctl kern.update'

Should this give the value '30' try

'sysctl -w kern.update=2'

 However I suspect you really want a stable version of 1.2 with ASYNC IO
working :-)

x
> This looks like squid operation is completely suspended every 30 sec.
> for some reason - which might be e.g. kernel's syncing.
>
> Is anyone experiencing the similar problems? Do you have any suggestion, how
> to fix this? Perhaps we should we change some kernel parameters?
>
>

-- 
GeoffB