[ Thanks to Andre Felipe Machado for
this link. ]
“Thousands concurrent parallel read write accesses over
tens of millions of small files is a terrible performance tuning
problem for e-mail servers.“You must understand and fine tune all your infrastructure
chain, following the previous articles for data storage and
multipath on Debian 5.x Lenny.“We reduced the CPU I/O wait from 30% to 0,3% (XFS) and 5%
(EXT3) with these combined previously undocumented file system
tuning tips.”