On 28/05/11 21:42, Grzegorz JaÅkiewicz wrote:
Yeah, I got it Mark. Unfortunately my current management decided to suspend that investigation for a while, so I can't get any tests done or anything like that. However we found out that another server we have shows similar issues. The same card, slightly different motherboard and completely different disks. The basic issue is around concurrent reads and writes. The card is ok-ish when one process hammers the disks, but as soon as it is multiple ones - it just blows (and I use it as a technical term ;) ). Still, with only one process reading/writing - the raid card sucks big time performance wise.
Sorry, Grzegorz I didn't mean to suggest you were not listening, I meant to ask if you could run the megaraid cli command to see if it showed up a battery!
If/when your management decide to let you look at this again, I'll be happy to help if I can!
Best wishes Mark -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
