Bug#600031: updating kernel causes slow write speed to raid

2010-10-15 Thread Dave Clarke
On 15 October 2010 02:33, Ben Hutchings b...@decadent.org.uk wrote: On Thu, 2010-10-14 at 15:16 +0100, Dave Clarke wrote: Ben That has solved it. Now getting around 27MB/s write on ext4 and 97MB/s read with the experimental kernel. I'm happy with these speeds on this hardware. It is still a

Bug#600031: updating kernel causes slow write speed to raid

2010-10-14 Thread Dave Clarke
Ben That has solved it. Now getting around 27MB/s write on ext4 and 97MB/s read with the experimental kernel. I'm happy with these speeds on this hardware. It is still a little slower then with windows but I can live with that. May be able to get better by tuning read-ahead buffer and

Bug#600031: updating kernel causes slow write speed to raid

2010-10-14 Thread Ben Hutchings
On Thu, 2010-10-14 at 15:16 +0100, Dave Clarke wrote: Ben That has solved it. Now getting around 27MB/s write on ext4 and 97MB/s read with the experimental kernel. I'm happy with these speeds on this hardware. It is still a little slower then with windows but I can live with that. Good, but

Bug#600031: updating kernel causes slow write speed to raid

2010-10-13 Thread Dave Clarke
Running bonnie++ locally. Have formatted / as ext3 and /home/ as ext4. using raid5. Also to note that when booted with windows server 2003 using Everest disk benchmark it does an average of 34MB/s (peaking to 50MB/s). Attached are bonnie++ output for the two kernel versions and ext3 and ext4

Bug#600031: updating kernel causes slow write speed to raid

2010-10-13 Thread Ben Hutchings
On Thu, 2010-10-14 at 00:31 +0100, Dave Clarke wrote: Running bonnie++ locally. Have formatted / as ext3 and /home/ as ext4. using raid5. Also to note that when booted with windows server 2003 using Everest disk benchmark it does an average of 34MB/s (peaking to 50MB/s). Attached are

Processed: Re: Bug#600031: updating kernel causes slow write speed to raid

2010-10-12 Thread Debian Bug Tracking System
Processing commands for cont...@bugs.debian.org: reassign 600031 linux-2.6 Bug #600031 [linux-image] updating kernel causes slow write speed to raid Warning: Unknown package 'linux-image' Bug reassigned from package 'linux-image' to 'linux-2.6'. Bug No longer marked as found in versions

Bug#600031: updating kernel causes slow write speed to raid

2010-10-12 Thread Ben Hutchings
On Tue, 2010-10-12 at 23:07 +0100, Dave Clarke wrote: Package: linux-image Version: 2.6.32-5-686 After dist-upgrade from Lenny to Squeeze write speed is halved. Shown with bonnie++. Before upgrade write speed was 21MB/s, after upgrade 10MB/s. Let's see the output from bonnie++. Also are