Le 14 févr. 08 à 02:22, Marion Hakanson a écrit :
> [EMAIL PROTECTED] said:
>> It's not that old. It's a Supermicro system with a 3ware 9650SE-8LP.
>> Open-E iSCSI-R3 DOM module. The system is plenty fast. I can pretty
>> handily pull 120MB/sec from it, and write at over 100MB/sec. It
>> falls apart
>> more on random I/O. The server/initiator side is a T2000 with
>> Solaris 10u4.
>> It never sees over 25% CPU, ever. Oh yeah, and two 1GB network
>> links to
>> the SAN
>> . . .
>> My opinion is, if when the array got really loaded up, everything
>> slowed
>> down evenly, users wouldn't mind or notice much. But when every 20
>> or so
>> reads/writes gets delayed my 10s of seconds, the users start to
>> line up at
>> my door.
>
>
This is the write throttling problem. I've tested code that changes
radically the
situation for the better. We just need to go through performance
validation before putback.
http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6429205
-r
>
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