Initial ext3 vs ext4 Results

“While the following benchmark is not in-depth, it does
represent our initial findings, which match our anecdotal findings.
If all of these findings hold true, we expect them to have a large
impact on our PostgreSQL OLTP workload where machines are IO
bound.

“The test platform:
Dell r905
Quad, Quad Core AMD Opteron(tm) Processor 8360 SE
128GB RAM
Red Hat Enterprise Linux Server release 5.3
2x Dell MD1120 DAS Arrays, 1 Perc 6/E per DAS
48 Seagate 2.5″ SAS 15k RPM 72GB Drives
Each MD1120 has 2x RAID10 LUN’s
Linux kernel RAID0 across all 4 LUN’s

“The Results:”

Complete Story