... massive performance problems with two of our > Linux servers that contain 3ware controllers on a Tyan mainboard and ... that machine takes minutes to complete and ldap becomes > unreliable while the rsync ... time (cp -a linux-2.6.24.2 linux-2.6.24.2b; ...

linux-kernel - Arnd Hannemann - Feb 26 2008 - 19:07

... are experiencing massive performance problems with two of our > Linux servers that contain 3ware controllers on a Tyan mainboard and > a ... login to that machine takes minutes to complete and ldap becomes > unreliable while the rsync job is ...

linux-kernel - Bernd Schubert - Feb 26 2008 - 13:54

... massive performance problems with two of our > Linux servers that contain 3ware controllers ... that machine takes minutes to complete and ldap becomes > unreliable while the rsync ... down while rsync is running. You're putting your box under astronomical load ...

linux-kernel - Chris Snook - Feb 26 2008 - 14:33

... that machine takes minutes to complete and ldap becomes > > unreliable while the rsync ... .za/2007/02/16/horrific-performance-with-3ware-raid Thanks, this helped a ... more responsive, which is really the problem we are experiencing. Andre --=20 The ...

linux-kernel - Andre Noll - Feb 27 2008 - 06:11

... the problem we > > are experiencing. > > > > Andre > > =20 > This is not 3ware- ... write > throttling that might help with the responsiveness issue: >=20 > http:// ... we tried both 2.6.24 and 2.6.25-rc, ... I'll play a bit with the various /proc/sys/vm/* ...

linux-kernel - Andre Noll - Feb 27 2008 - 13:05

... which is really the problem we > are experiencing. > > Andre > This is not 3ware-specific, but kernel 2.6.24 has new per-device write throttling that might help with the responsiveness issue: http://kernelnewbies.org/LinuxChanges# ...

linux-kernel - Tony Battersby - Feb 27 2008 - 10:26

... to the raid on the 3ware controller the load > >jumps up, ... rsync is running. >=20 > You're putting your box under astronomical ... file, and then syncing) to give us a baseline=20 > performance ... to be ok (140M/s). The problem is that the machine becomes ...

linux-kernel - Andre Noll - Feb 27 2008 - 06:11

... to the raid on the 3ware controller the load >>> jumps up ... while rsync is running. >> You're putting your box under astronomical ... file, and then syncing) to give us a baseline >> performance figure ... be ok (140M/s). The problem is > that the machine becomes ...

linux-kernel - Chris Snook - Feb 27 2008 - 15:55

On 18:54, Bernd Schubert wrote: > do you have the write-back cache of the controller enabled for your disks= ?=20 Yes, I do. Performance is poor anyway. Andre --=20 The only person who always got his work done by Friday was Robinson Crusoe

linux-kernel - Andre Noll - Feb 27 2008 - 06:10

... running, it becomes unusable quickly. However, reducing the queue depth with echo 16 > /sys/block/sda/device/queue_depth as suggested by Adam, solves all problems. Thanks all for your help. Andre --=20 The only ...

linux-kernel - Andre Noll - Feb 28 2008 - 05:46

... > > to make the system more responsive, which is really the problem we > > > are experiencing. Andre, Can you try turning down /sys/block/sdX/device/queue_depth to 16 and see if that improves your responsiveness? -Adam -- To ...

linux-kernel - adam radford - Feb 27 2008 - 16:06

... > > to make the system more responsive, which is really the problem we > > > > are experiencing. >=20 > Can you try turning down /sys/block/sdX/device/queue_depth to 16 and > see if that improves your responsiveness? Yes, that setting ...

linux-kernel - Andre Noll - Feb 28 2008 - 05:46