https://bugzilla.novell.com/show_bug.cgi?id=469922 Summary: aacraid driver results in terrible performance on PERC 3D/i controllers Classification: openSUSE Product: openSUSE 11.1 Version: Final Platform: 32bit OS/Version: openSUSE 11.1 Status: NEW Severity: Major Priority: P5 - None Component: Kernel AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: admin@vbi.vt.edu QAContact: qa@suse.de Found By: --- User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.5) Gecko/2008121300 SUSE/3.0.5-1.1 Firefox/3.0.5 After an upgrade from opensuse 11.0 to 11.1, Dell PowerEdge 2650 servers with PERC 3D/i controllers [aacraid driver] experience terrible I/O performance, rendering machine barely usable under normal conditions. Example dd run: # time dd if=/dev/zero of=bigfile bs=1M count=100 conv=fsync 100+0 records in 100+0 records out 104857600 bytes (105 MB) copied, 15.2222 s, 6.9 MB/s real 0m15.227s user 0m0.004s sys 0m0.580s Problem was reported on the Dell PowerEdge mailing list as: http://lists.us.dell.com/pipermail/linux-poweredge/2009-January/038446.html Similar bugs that have been reported include: https://bugzilla.novell.com/show_bug.cgi?id=395496 https://bugzilla.novell.com/show_bug.cgi?id=400783 And looks like a fix was implemented via bug-395496_aacraid-2459-update Is it possible to roll this fix into the OpenSUSE kernel? Reproducible: Always Steps to Reproduce: 1. install opensuse 11.1 on PE2650 with PERC3D/i controller 2. boot 3. Actual Results: Poor I/O performance -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.