Re: REGRESSION in 2.6.13-rc1: Massive slowdown with Adaptec SCSI

2005-07-05 Thread art
kernel 2.6.13-rc1-git7 after applaying patch transfer back to 72MB/s on aha19160 with 15k rpm seagate with reiserfs3 but possible deadlock in heavy IO - rsync ~5-files from /mnt/seagate15k/a to /mnt/seagate15k/b ended in middle with deadlock of rsync (3 instances), pdflush, and gam_server in

Re: REGRESSION in 2.6.13-rc1: Massive slowdown with Adaptec SCSI

2005-07-05 Thread Mail USFLTD
kernel 2.6.13-rc1-git7 after applaying patch transfer back to 72MB/s on aha19160 with 15k rpm seagate with reiserfs3 but possible deadlock in heavy IO - rsync ~5-files from /mnt/seagate15k/a to /mnt/seagate15k/b ended in middle with deadlock of rsync (3 instances), pdflush, and gam_server in

Re: REGRESSION in 2.6.13-rc1: Massive slowdown with Adaptec SCSI

2005-07-05 Thread Neil Brown
On Tuesday July 5, [EMAIL PROTECTED] wrote: > On Tuesday July 5, [EMAIL PROTECTED] wrote: > > On Tue, Jul 05, 2005 at 11:08:17AM +1000, Neil Brown wrote: > > > On 2.6.13-rc1 the same test takes just short on 1 minute and reports > > > slightly less than 2 M/Second. > > > > That sounds like your

Re: REGRESSION in 2.6.13-rc1: Massive slowdown with Adaptec SCSI

2005-07-04 Thread Neil Brown
On Tuesday July 5, [EMAIL PROTECTED] wrote: > On Tue, Jul 05, 2005 at 11:08:17AM +1000, Neil Brown wrote: > > On 2.6.13-rc1 the same test takes just short on 1 minute and reports > > slightly less than 2 M/Second. > > That sounds like your drives have negotiated an asynchronous transfer > agreem

Re: REGRESSION in 2.6.13-rc1: Massive slowdown with Adaptec SCSI

2005-07-04 Thread Matthew Wilcox
On Tue, Jul 05, 2005 at 11:08:17AM +1000, Neil Brown wrote: > On 2.6.13-rc1 the same test takes just short on 1 minute and reports > slightly less than 2 M/Second. That sounds like your drives have negotiated an asynchronous transfer agreement. Could you provide your dmesg to confirm that diagn