Matthew Jacob wrote:
On 3/27/07, Richard Tector <[EMAIL PROTECTED]> wrote:
Matthew Jacob wrote:
> It's been seen before but the fix isn't know yet.
>
> On 3/27/07, Richard Tector <[EMAIL PROTECTED]> wrote:
>> I'm suffering from very slow write performance on a Dell PowerEdge
860
>> with the SAS5/IR controller (mpt driver) running either
6.2-RELEASE or
>> 6.2-STABLE with sources from yesterday. The controller hosts 2
Western
>> Digital 320GB SATA disks in a RAID1 configuration.
>> Reads approach 65MB/s however writes appear extremely slow, in the
>> region of 6-7MB/s with a dd and a blocksize of 1MB all the way
down to
>> about 300KB/s while extracting a ports snapshot.
>>
>> It was suggested to me that perhaps write caching has been
disabled on
>> the controller however no options exist within the BIOS
configuration to
>> view/adjust *any* caching options.
>>
>> Has anyone else experienced this issue? If so how did they resolve
it?
>> Also, is there any way to toggle the caching settings from FreeBSD?
A perhaps unrealted issue:
I've noticed a large number of messages being produced by the mpt driver
after boot occuring approximately every 90 seconds.
Apr 1 15:51:43 moses kernel: mpt0: mpt_cam_event: 0x14
Apr 1 15:51:43 moses kernel: mpt0: Unhandled Event Notify Frame. Event
0x14 (ACK not required).
Apr 1 15:53:19 moses kernel: mpt0: mpt_cam_event: 0x14
Apr 1 15:53:19 moses kernel: mpt0: Unhandled Event Notify Frame. Event
0x14 (ACK not required).
Any thoughts anyone? Is there any way to find out what the events
correspond to?
Regards,
Richard
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