jueves, 17 de marzo de 2011

ext4 optimization and throughput (Preview)

Scenario: Debian Stable 6.0 under VmWare ESXi 4.1
Cases:

  • 1 core and 497 Mb RAM
  • 4 cores and 4Gb RAM

Test used:  Phoronix Test Suite
Mount options:
  • defaults
  • noatime
  • long  noatime,barrier=0,data=writeback,nobh,commit=100,nouser_xattr
  • no_journal - defaults, but fs created with "mkfs.ext4 /dev/sdb1 -O^has_journal" defaults
Results Case1 (1 Core):
Results Case2 (4 Cores):
Results Case1 & Case2 Mixed:
http://openbenchmarking.org/result/1103160-IV-MERGE353122 (It has some visualization problems)
Comments:
To be update... soon
Improvements to do:
Test in a bare installation, and testing hypervisor overload (vmware Vs. kvm)