using aufs works fine.. my server receives about 4000 to 6000 req/min !! file system of hard disk is reiserfs4 !! USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND squid 32748 1.1 35.0 1493184 1446748 ? Sl Aug09 8:17 (squid) -D -s the server is very clean, running squid + QUAGGA/OSPF only... i/o loop using epoll.. I thought because diskd has an external procces it uses more threads .. later i will make more tests using diskd and post the new results !! regards !! AlexandrE On 8/10/07, Michel Santos <michel@xxxxxxxxxxxxxx> wrote: > > Alexandre Correa disse na ultima mensagem: > > after reading this email, i switched from aufs to diskd to see > > performance of them under high load .. > > > > with aufs, squid never used more than 10% of cpu and response time is > > very low (5ms to 150ms).. with diskd cpu usage goes to 50% +- and > > median response time up to 900ms !! > > > > i´m running CentOS 5.0 with kernel 2.6.22, quad opteron 64 bits with > > 4gb ram and hd are SAS 15.000 rpm > > > > > don't know anything about Centos but when a Quad Opteron does not handle > the load you obviously have something wrong in your config, either squid > or OS settings > > > Michel > > > > ... > > > > > **************************************************** > Datacenter Matik http://datacenter.matik.com.br > E-Mail e Data Hosting Service para Profissionais. > **************************************************** > > -- Sds. Alexandre J. Correa Onda Internet / OPinguim.net http://www.ondainternet.com.br http://www.opinguim.net
