Description of problem: Disk reads slow with sil 3114 bios ver 5.0.35 hard drives are set at the hardware level SATA(only)is enabled in mo/bo bios,all RAID arrays are configured through disk druid. When benchmarking RAID0 arrays with hdparm results show slow performance 75MB/sec to be exact this is a 25% loss in performance compared to RedHat 9.0 using Silicon Image beta drivers dated 08/03 Have re-formated twice w/fresh installs results are always same when going back to RedHat 9.0 disk reads are 100MB/sec -(RAID0) Version-Release number of selected component (if applicable): How reproducible:Always Steps to Reproduce: 1.hdparm -t /dev/mdx 2. 3. Actual results: Expected results:Equal to or better than Silicon Image beta drivers dated 08/03 Additional info:
RHL9 didn't support sil 3114. Is the Silicon Image beta driver binary only or is it the same one which has been added to the recent kernels ?
Correct RedHat 9.0 did not support silicon image 3114 chipset, the driver in question was binary developed by silicon image a copy of there RedHat drivers can be downloaded from there web page but they do not offer source code for this
please don't use hdparm for such benchmarks but tiobench (http://tiobench.sourceforge.net) hdparm disables a bunch of valid kernel optimisations etc etc