HEADS UP: Major CAM performance regression
bp at barryp.org
Tue Mar 3 09:31:32 PST 2009
Mike Tancsa wrote:
> At 05:55 AM 2/13/2009, Scott Long wrote:
>> If, instead, it reports a value of '1', you are likely affected. Note
>> that it may be normal for USB memory devices to report a low number.
>> Also, many legacy SCSI disks, and devices that are not disks, may also
>> be expected to report a low number.
> Hi Scott,
> I tested with the patch on my areca controller, and it still
> reports 1 post patch. (On RELENG_6, it shows 255 with the same controller)
I can report a "metoo" on a 7.0-RELEASE-p3 machine with an Areca
ARC-1212 card and SATA drives. "camcontrol tags da0" reports:
(pass0:arcmsr0:0:0:0): device openings: 1
The machine is just a dog sometimes. Haven't tried the patch though.
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