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Re: Why Squid on CentOS is faster than Debian ?

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Le 01/04/2019 à 23:22, Alex Rousskov a écrit :

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.


Hi Alex and comunity

The test did not use workers

Here it is a piece of logs between the 2 machines

CentOS 7:
1554185117.132      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 10979 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0611_2.jpg - HIER_NONE/- image/jpeg 1554185117.133      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 5531 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0611_5.jpg - HIER_NONE/- image/jpeg 1554185117.134      0 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 3727 GET http://www.projetmontsaintmichel.com//upload/document/minis/capture_40.jpg - HIER_NONE/- image/jpeg 1554185117.137      0 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 1230 GET http://www.projetmontsaintmichel.com/web/images/ico_pdf.png - HIER_NONE/- image/png 1554185117.141      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 33600 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_6.gif - HIER_NONE/- image/gif 1554185117.142      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 20200 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_2.gif - HIER_NONE/- image/gif 1554185117.144      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 29375 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_5.gif - HIER_NONE/- image/gif 1554185117.146      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 29835 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_4.gif - HIER_NONE/- image/gif 1554185117.147      2 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 28683 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_1.gif - HIER_NONE/- image/gif 1554185117.149      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 7715 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0608_3.jpg - HIER_NONE/- image/jpeg 1554185117.151      0 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 8175 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0608_2.jpg - HIER_NONE/- image/jpeg 1554185117.152      0 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 2519 GET http://www.projetmontsaintmichel.com/web/images/bloc_infoschantier2.gif - HIER_NONE/- image/gif 1554185117.153      0 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 3870 GET http://www.projetmontsaintmichel.com/web/images/bloc_espacepro2.gif - HIER_NONE/- image/gif 1554185117.157      0 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 9349 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0608_1.jpg - HIER_NONE/- image/jpeg 1554185117.162      0 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 3622 GET http://www.projetmontsaintmichel.com//upload/document/minis/capture_29.jpg - HIER_NONE/- image/jpeg 1554185117.162      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 409 GET http://www.projetmontsaintmichel.com/web/images/puce_carre_visite.gif - HIER_NONE/- image/gif 1554185117.162      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 409 GET http://www.projetmontsaintmichel.com/web/images/puce_carre_gris.gif - HIER_NONE/- image/gif 1554185117.175      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 23219 GET http://www.projetmontsaintmichel.com/web/images/fond_footer.jpg - HIER_NONE/- image/jpeg 1554185117.187      0 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 540 GET http://www.projetmontsaintmichel.com/web/galerie/images/overlay.png - HIER_NONE/- image/png 1554185117.389      2 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 858 GET http://www.projetmontsaintmichel.com/favicon.ico - HIER_NONE/- image/x-icon 

Debian 9:
1554185129.651      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 8887 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0611_1.jpg - HIER_NONE/- image/jpeg 1554185129.660      5 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 8733 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0611_4.jpg - HIER_NONE/- image/jpeg 1554185129.664      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 5565 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0611_5.jpg - HIER_NONE/- image/jpeg 1554185129.664      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 11013 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0611_2.jpg - HIER_NONE/- image/jpeg 1554185129.665      2 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 3761 GET http://www.projetmontsaintmichel.com//upload/document/minis/capture_40.jpg - HIER_NONE/- image/jpeg 1554185129.665      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 1264 GET http://www.projetmontsaintmichel.com/web/images/ico_pdf.png - HIER_NONE/- image/png 1554185129.677     12 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 33634 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_6.gif - HIER_NONE/- image/gif 1554185129.677      2 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 7749 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0608_3.jpg - HIER_NONE/- image/jpeg 1554185129.677      4 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 20234 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_2.gif - HIER_NONE/- image/gif 1554185129.678      4 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 28717 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_1.gif - HIER_NONE/- image/gif 1554185129.678      4 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 29869 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_4.gif - HIER_NONE/- image/gif 1554185129.678      4 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 29409 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0609_5.gif - HIER_NONE/- image/gif 1554185129.688      3 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 8209 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0608_2.jpg - HIER_NONE/- image/jpeg 1554185129.691      2 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 9383 GET http://www.projetmontsaintmichel.com/upload/document/reduites/TR_BA_0608_1.jpg - HIER_NONE/- image/jpeg 1554185129.692      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 3656 GET http://www.projetmontsaintmichel.com//upload/document/minis/capture_29.jpg - HIER_NONE/- image/jpeg 1554185129.694      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 443 GET http://www.projetmontsaintmichel.com/web/images/puce_carre_visite.gif - HIER_NONE/- image/gif 1554185129.694      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 443 GET http://www.projetmontsaintmichel.com/web/images/puce_carre_gris.gif - HIER_NONE/- image/gif 1554185129.700      3 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 574 GET http://www.projetmontsaintmichel.com/web/galerie/images/overlay.png - HIER_NONE/- image/png 1554185129.701      3 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 23253 GET http://www.projetmontsaintmichel.com/web/images/fond_footer.jpg - HIER_NONE/- image/jpeg 1554185129.857      1 172.16.1.228 50:46:5d:a0:3e:5a TCP_MEM_HIT/200 892 GET http://www.projetmontsaintmichel.com/favicon.ico - HIER_NONE/- image/x-icon 


CentOS :
    total: 14msec
    average: 0.7msec

Debian :
    total: 56msec
    average: 2.8msec

CentOS vs Debian: 400% faster with CentOS

Do you know why CentOS objects are 34 bytes smaller than Debian ?






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