On 26/06/2014 11:53 a.m., Matthew Ceroni wrote: > Amos: > > Thanks for the info. I am using workers so that explains why the > output of mgr:info shows such a high number of file descriptors. > > If you don't mind I need some further clarification on the output of > mgr:info. Just to summarize I have a global nofile limit of 8192 and > the squid user is set to a soft limit of 4096 and a hard limit of > 8192. > > The output of mgr:info contains a statistic "Largest file desc > currently in use" (in my case it shows 3956). What exactly is that > indicating? Would it be safe to assume that at some point in time a > max of 3956 FD were in use (assuming each open FD is given a > incrementing number)? That is exactly what it means. Not just "at some point in time", but relatively recently since the FD 3956 has not yet finished and closed. > > Also, when squid first starts up it lists the Maximum number of file > descriptors as 65536, but when I get the warning message that my Cache > is low on FD that value changes to 16384. Why is that? Given that you said workers I read that as: 64K = 16K FD-limit for each of 4 workers (176K being your squid.conf value? or root/system user account imit?) 16K = 4096 FD-limit for each of 4 workers Amos