hi everyone,

I'm looking at some performance problems on our web servers, and I think that hard drive performance is a bottleneck. All filesystems are on a RAID0 disk array with two 7200RPM disks (no battery-backed cache). The cache is on a dedicated ext3 partition. At some points, my await times on the disk are up to 1000ms. How can I improve this? Would setting commit time larger than 5 seconds be OK? Would setting the ext3 journal type to "data=writeback" be OK?

platform: RHEL5.5 x86_64

Thanks,
Jason
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