Have you applied all the firmware upgrade to this server BIOS + raid controller?
Sebastien Estienne On Thu, Apr 30, 2009 at 17:16, Jason Joines <[email protected]> wrote: > Sebastien Estienne wrote: >> try benchmarking with a jaunty live cd mounting you hardy partition so >> you can test a newer kernel >> >> -- >> Sebastien E. >> >> >> Le 27 avr. 09 à 20:15, Jason Joines <[email protected]> a écrit : >> >>> I have a dell 2550 server that I want to get Ubuntu on. I >>> tried a >>> few months ago with the initial 8.04 release and the install was so >>> slow >>> I gave up. I had tried the mini.iso cd, desktop cd, server cd, and >>> alternate cd with the same results. >>> >>> Recently I decided to try again with the 8.04.2 media and just >>> let >>> it keep running. Instead of assuming it had timed out I would go >>> check >>> on it once a day and after many days it was finally installed. As an >>> example of the slow install, when using the text install and at the >>> point where the dialog said "Installing the base system" it took 66 >>> minutes to go from a 33% status to a 39% status. Also, by watching >>> logs >>> it seemed that the package retrieval from the internet was really fast >>> but it became super slow any time it was "unpacking". >>> >>> The system has a broadcom1 Gbps nic, two pentium III 933 cpu's, 1 >>> GB of RAM, three 74 GB u160 scsi drives configured as raid 0 via the >>> builtin dell raid controller which is using the aacraid module. I've >>> tried both ext3 and xfs as the filesystem. >>> >>> This system was running windows server 2k3 and wasn't noticeably >>> slow. I also have an identical system that is running Ubuntu 7.10 and >>> it seems to be over three times as fast via these simple tests: >>> >>> 7.10 System running 2.6.22 kernel >>> dd if=/dev/zero of=gigfile00 bs=1k count=1048576 >>> 1048576+0 records in >>> 1048576+0 records out >>> 1073741824 bytes (1.1 GB) copied, 29.5587 seconds, 36.3 MB/s >>> >>> dd if=/dev/zero of=gigfile00 bs=1M count=1024 >>> 1024+0 records in >>> 1024+0 records out >>> 1073741824 bytes (1.1 GB) copied, 29.1349 seconds, 36.9 MB/s >>> >>> 8.04.2 System running 2.6.24 kernel >>> dd if=/dev/zero of=gigfile00 bs=1M count=1024 >>> 1024+0 records in >>> 1024+0 records out >>> 1073741824 bytes (1.1 GB) copied, 98.4516 s, 10.9 MB/s >>> >>> dd if=/dev/zero of=gigfile00 bs=1k count=1048576 >>> 1048576+0 records in >>> 1048576+0 records out >>> 1073741824 bytes (1.1 GB) copied, 93.9246 s, 11.4 MB/s >>> >>> >>> I found this bug report >>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/249964 about >>> these >>> smp systems having the aacraid driver hang under high load. However, >>> this box isn't under any load and I haven't had any of the log >>> messages >>> reported. I decided to try the fix anyway so I recompiled the kernel >>> after changing: >>> #define AAC_MAX_32BIT_SGBCOUNT ((unsigned short)256) >>> to >>> #define AAC_MAX_32BIT_SGBCOUNT ((unsigned short)127) >>> in aacraid. It didn't help. >>> >>> I also tried disabling smp via "maxcpus=1" in grub. It did >>> disable >>> smp but it didn't help. >>> >>> Any suggestions? >>> >>> >>> Jason Joines >>> ================================= >>> >>> >>> >>> -- >>> ubuntu-server mailing list >>> [email protected] >>> https://lists.ubuntu.com/mailman/listinfo/ubuntu-server >>> More info: https://wiki.ubuntu.com/ServerTeam >> > > > I booted from a 9.04 cd and ran dd from the installer shell. The > kerenel was 2.6.28. I got the same results as far as speed is > concerned. However, I was eventually able to generate the errors and > hang reported by others in the bug report: > > aacraid: Host adapter abort request (2,0,0,0) > aacraid: Host adapt reset request. SCSI hang? > > Is this a vanilla kernel bug or Ubuntu specific? I need to get > this box up and running so if another distribution doesn't have the bug > I could change. > > > Jason > =========== > > > -- > ubuntu-server mailing list > [email protected] > https://lists.ubuntu.com/mailman/listinfo/ubuntu-server > More info: https://wiki.ubuntu.com/ServerTeam -- ubuntu-server mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-server More info: https://wiki.ubuntu.com/ServerTeam
