On 15.11 12:23, Sturgis, Grant wrote: > I am writing for ideas on how I can increase the performance of my squid > cache. > > I am running: > > cache_dir aufs on ext2 [...]
> The hardware is: > > Dell PE 1650 > 2-Intel PIII 1133 MHz > 4 GB RAM > > The symptom is that during our peak utilization periods, when HTTP > requests get over about 750/min, the response time gets very slow, over > 800 ms or so. I understand that squid is single threaded, but we are > running a number of the redirector processes and it seems that the CPU > workload is distributed fairly well. This is determined by examining > /proc/stat with MRTG. Neither CPU seems to reach above 55% utilization > so I do not think the system is CPU bound. 55% is already quite much, however that is probably not the problem. > One thing that is concerning: > > [EMAIL PROTECTED] squid]# free -m > total used free shared buffers > cached > Mem: 3778 3756 22 0 472 > 2154 > -/+ buffers/cache: 1129 2649 ^^^^ this says you only use a bit more than 1GB of memory. > Also, I do understand that reiserfs is a recommended file system over > ext2; do you think it will make a large difference to change this? yes, there is high probability that changing to xfs/jfs/reiserfs would help you. > Any suggestions for things I can do to determine why my cache is slow or > how to make improvements in performance? try to see how disks are loaded using 'iostat -d 1' -- Matus UHLAR - fantomas, [EMAIL PROTECTED] ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Windows 2000: 640 MB ought to be enough for anybody