Dear all,
I'm finding that with a raids-0 (3 disk internal) array, performance degrades in relation to the time expired (and number of I/Os performed) since the last reboot. And when I say degrade....I mean really badly degrade: a 500mb duplicate than normally takes 8 seconds can take 35 minutes, but after a reboot is back to 8 seconds again.
I assume this is some sort of bug. But how do I help track it down and report it? Are there things in zstat or elsewhere that I should look for and report? Is this a known bug, and I just am missing something?
The rig is a Mac Pro 2009 with 32gb of memory and 3 3TB seagate drives in the default bays, running macosx mountain lion server with the liberate hack.
Any thoughts are much appreciated.
best,
Erico