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Re: Squid 3.2.6 & hot object cache

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I am using ext4 on LINUX, too.
Did quite a few private simple benchmarks, and found, ext4  to be fastest
for me.
However, it was necessary for me to "cripple" the features of ext4 to a low
level, to improove performance, sacrificing for some data availability. So
in case of highest availability requirements regarding your data, my
settings will not be appropiate for you.

First of all one of my 2 disks (both are equal):
tune2fs -l /dev/sdb1
Filesystem features:      has_journal ext_attr resize_inode dir_index
filetype needs_recovery extent flex_bg sparse_super large_file huge_file
uninit_bg dir_nlink extra_isize

cat fstab
/dev/sdb1            /mnt/cacheA          ext4      
noatime,nodiratime,barrier=0,journal_async_commit,delalloc,noauto_da_alloc        
0 0

This could give you some idea, what to look at. 


For me, especially the various settings regarding journal made quite some
difference.
Because of using squid2.7 I have multiple squids + CARP, to allow efficient
use of multiple CPUs and multiple disks.
Dunno, whether this still is necessary on 3.x

Wie ist das Wetter in der Hauptstadt ?

Cheers,

Reiner



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