Re: [squid-users] Concurrent Connection Limit

Jeffrey Ng wrote:
> I recompiled squid and re-installed, and cahce log showed the 2048 file
> descriptors there, but z19 still didnt work quite right - showed about
> 1400 network conenctions.
>
> so i rebuilt for 25088 file descriptors (way over kill hehe).
>
> recompiled again and now its live, i dont know if its perfect but right
> now there are (and im not kidding) its now showing 29322 network sockets
> open right now.
>
>
> Im baffled. Somethign doesnt jive. And the cpu spike to 6.0, with that
> many sockets opened.
>
> so i set ulimit to 999999 (1 million basicaly) and rebuild squid again.
>
> According ot cache.log it locks at 32768 file descriptors, it wont load
> the 9999999, it appears a hard limit in deed! Anyway netstat -vatn shows
> only 3352 open sockets right now but z19 isnt repsonding well, and within
> a few minutes i stoped it and went back to http mode...
>
> what should i do the next?

Sorry for the repost, but apparently some mail servers are very prudish
about a 4 letter word concerning pictures of people with no clothes on...

Do an analysis of usage and find out who is abusing your service. It
sounds like you are either under a DoS attack or someone has some really
popular content on your servers (like p___).

I've encountered something similar in the past and found out some users
were giving p___ sites access to webspace on my servers in exchange for
p___ accounts. 10 users (out of 200,000) accounted for 75% of my bandwidth.

-- 
Robert Borkowski