4R0 C300 on LSI 9260

[Mitchb]

Added one more disk for a total of four. Read ahead vs no read ahead.

Mitch

[paul_]

Now I really, REALLY wish I had a second PCI-E slot.

Nice numbers

[Johnny87au]

Which stripe size you using, is that with Fastpath ?? Nice 4k numbers too!!

[DooRules]

for comparison guys, here are 4 C300 128 gb versions on the UD7 P67, 128 stripe

[Johnny87au]

Thanks doorules, mitchb your writes are way off.. Your scores should be alot better using a 9260 over the p67 controller.. Anyone add to this ?

[vxr]

optimal LSI SSD RAID settings:
WT&NRA&DIO, 64KB

[F@32]

Thanks doorules, mitchb your writes are way off.. Your scores should be alot better using a 9260 over the p67 controller.. Anyone add to this ?

You are absolutely correct. But for that he needs a FastPath key. 4K Read/Write performance is gimped on 9260 without FastPath.

[Johnny87au]

You are absolutely correct. But for that he needs a FastPath key. 4K Read/Write performance is gimped on 9260 without FastPath.

Is that the only thing FP improves on the LSI controllers ? I thought that and latency helps with fp key ?

[Computurd]

yes latency is tremendously better with FP. that is the only way to boost the low QD random, lower latency! they go hand in hand

[Johnny87au]

cheers buddy!

[Mitchb]

The benches were using an MSI big bang, 980X @ 4.3 GHz and fastpath. 64K stripe. Direct I/O & writethrough. The 4K writes were much better using ich10r with WBC enabled but, max throughput was limited to ~600 Mb/s. Overall, still a fast system.

Mitch