[squid-users] Why Squid on CentOS is faster than Debian ?

[Alex Rousskov]

On 4/1/19 3:17 AM, David Touzeau wrote:

> On 30.03.19 10:22, David Touzeau wrote:
>> * 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


> We have recompiled same squid version on 2 systems
> 
> No march= using --disable-arch-native on both systems
> 
> Debian config.log
> https://github.com/dtouzeau/1.6.x/blob/Tempfiles/debian9-config.log?raw=true
> 
> Centos config.log
> https://github.com/dtouzeau/1.6.x/blob/Tempfiles/centos7-config.log?raw=true
> 
> Result was CentOS 44% faster on TCP_MEM_HITS

Just to clarify: Did changing ./configure options alone move you from
1000% to 44%? Or was the earlier "10 times" just a crude approximation
that we should ignore now?


Do your Squids use shared memory for the memory cache? See
memory_cache_shared (even if you do not set it explicitly).
http://www.squid-cache.org/Doc/config/memory_cache_shared/

Any significant difference in mgr:info and mgr:counters output after a
test that only has memory hits?

Alex.