[squid-users] Re: Squid logs to named pipe?

Henrik Nordstrom wrote:
> tis 2006-06-13 klockan 13:08 -0700 skrev John Oliver:
>> Googling turned up a three-year-old post indicating that there would be
>> problems with sending logs to a named pipe under load. Well, I'm hoping
>> that's been resolved... we expect to have to hundle dozens or hundreds
>> of hits per second :-) And accurate log handling is critical for
>> billing. What are my best options?
>
> Sending logs to a pipe (named, or explicit opened by Squid if one is to
> add such patch) always has issues under load as the performance gets
> limited to the performance of your log processor. If the log processor
> can't keep up Squid will soon stop all activities until it catches up.
> The same also happens if the log processor should exit for some reason..
>
> My recommendation is therefore to use the perl module File::Tail to
> monitor the on-disk file. File::Tail is quite similar to "tail -f" but
> automatically detects when the logfile has been rotated so it can be
> kept running completely independent of Squid, and will process log
> records as fast as it can without delaying Squid under peak load.

tail -F has the same effect - it monitors the filename rather than the
inode.

R.
Received on Tue Jun 13 2006 - 17:03:44 MDT