in the words of a long dead English professor... "there is no point in the English language where 2 positives create a negative sense" ... student in the audience shouts out "yeah, right."
This is getting a bit frustrating, even running the P840 in HBA-mode Im still experiencing weird behaviour. The screenshots is from 8x480gb Intel 530 SSD in one SS single parity pool. I the performance numbers seem alright but the latency numbers cant be right?
Ive had peaks upward of 200ms, is this normal? Even if I split the SS up and try a single disk I get latencys of 20-40ms. Is the HP card still doing some weird shit?
These numbers are with one test VM running so basically no load.
Not sure I follow, you think I should bench with iometer?iometer especially with that setup.
Well, my options are pretty limited right now. The money has been spent on the P840 and Intel SSDs, since they arent working together Im trying to find the least bad alternative.How you can live with those write numbers is beyond me. I gave up on SS a while back.
Yea, right now though Im trying to understand if the response times Im getting are reasonable or if something is still weird with the P840-card.Parity pools are horrible for write performance. Even with SSD's, I don't think I'd expect to see it perform well.