On 31/03/19 3:41 am, David Touzeau wrote: > On 30.03.19 10:22, David Touzeau wrote: > >>> Did you have perform squid stress on Debian against CentOS ? >>> >>> I have installed: >>> >>> * Debian 9 net install + Squid compiled >>> * CentOS 7 minimal + Squid compiled >>> >>> Same version, same compilation parameters, same Squid settings. >> >>> It seems that Squid on CentOS is 10 times faster than squid on Debian >> >> faster in what? Response time? number of parallel connections? >> single or multiple connection data transfers? >> HTTP or HTTPS? >> >>> What are kernel differences that made this huge performance changes? >> >> no kernel differences should cause 10x speed difference. >> If you still have the config.log files from the build you may be able to track down something being detected (or not) in one of the builds. The -march=native or -O level options for compile would be the first place I look for a major difference like that. Either on Squid or on one of the system libraries it uses. The *FLAGS summary at the end of the build can be a good starting point for comparison. Compiler version can also have an effect as newer compilers use more performance related tricks than older ones (YMMV on which tricks are actually better). >> > Faster in what? Response time? > > 1. response time, MISS and HIT are faster > > Example: > > on Centos MEM_HIT are about 0-1 msec against Debian about 3-4 msec > On the same test traffic? Amos _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
