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Hardware (only running Squid):

# cat /proc/cpuinfo  | egrep -i xeon | uniq
model name      : Intel(R) Xeon(R) CPU           E5405  @ 2.00GHz
# cat /proc/cpuinfo  | egrep -i xeon | wc -l
8

# free -m
             total       used       free     shared    buffers     cached
Mem:         32148       2238      29910          0        244        823
-/+ buffers/cache:       1169      30978
Swap:        15264          0      15264

# lsscsi
[0:0:0:0]    disk    MAXTOR   ATLAS15K2_73WLS  JNZH  /dev/sda
[0:0:1:0]    disk    SEAGATE  ST3300655LW      0003  /dev/sdb
[0:0:4:0]    disk    SEAGATE  ST3146807LC      0007  /dev/sdc
[3:0:0:0]    disk    SEAGATE  ST3300655SS      0004  /dev/sdd
[3:0:1:0]    disk    SEAGATE  ST3300655SS      0004  /dev/sde

# fdisk -l | grep GB
Disk /dev/sda: 73.5 GB, 73557090304 bytes
Disk /dev/sdb: 300.0 GB, 300000000000 bytes
Disk /dev/sdc: 146.8 GB, 146815737856 bytes
Disk /dev/sdd: 300.0 GB, 300000000000 bytes
Disk /dev/sde: 300.0 GB, 300000000000 bytes

# lspci | grep -Ei 'sas|scsi'
04:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1064ET
PCI-Express Fusion-MPT SAS (rev 04)
06:02.0 SCSI storage controller: Adaptec ASC-29320LP U320 (rev 03)


# uname -srm
Linux 2.6.27.7 x86_64

Squid:

# squid -v
Squid Cache: Version 3.0.STABLE13
configure options:  '--bindir=/usr/bin' '--sbindir=/usr/sbin'
'--libexecdir=/usr/libexec' '--datadir=/usr/share/squid'
'--sysconfdir=/etc/squid' '--libdir=/usr/lib' '--includedir=/usr/include'
'--mandir=/usr/man' '--localstatedir=/var' '--enable-async-io'
'--with-pthreads' '--enable-xmalloc-statistics' '--enable-storeio=aufs'
'--enable-removal-policies' '--enable-err-languages=English Portuguese'
'--enable-linux-netfilter' '--disable-wccp' '--disable-wccpv2'
'--disable-ident-lookups' '--enable-snmp' '--enable-kill-parent-hack'
'--enable-delay-pools' '--enable-follow-x-forwarded-for'
'--with-large-files' '--with-filedescriptors=65536' 'CFLAGS= -march=native'
'CXXFLAGS= -march=native'

# cat /etc/squid/squid.conf | grep -E cache_'mem|dir'\
cache_mem 8192 MB
cache_dir aufs /var/cache/proxy/cache1 102400 16 256
cache_dir aufs /var/cache/proxy/cache2 102400 16 256
cache_dir aufs /var/cache/proxy/cache3 102400 16 256
cache_dir aufs /var/cache/proxy/cache4 102400 16 256
cache_dir aufs /var/cache/proxy/cache5 102400 16 256
cache_dir aufs /var/cache/proxy/cache6 102400 16 256
cache_dir aufs /var/cache/proxy/cache7 102400 16 256
cache_dir aufs /var/cache/proxy/cache8 102400 16 256


# cat /etc/fstab  | grep proxy
/dev/vg00/cache  /var/cache/proxy ext3        defaults         1   2


Yes, I know, LVM, ext3 and aufs are bad ideas... I'm particularly
interested in a better cache_dir configuration (maximizing disk's usage)
and the correct cache_mem parameter to this hardware. (and others
possible/useful tips)

Thanks,

-- 
Herbert

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