topic Re: Performance in StoreVirtual Storage

Performance

HRRVHP — Mon, 20 Jan 2014 17:16:50 GMT

Using VSA on hyper-v 2008 R2 10.5 and some esxi 4.0 with 10.5. I get really bad read and write randomly 60+ ms even at DR site less than 100 i/o with 300ms read/write performance...yikes. Anyone else haveing these problems it's honestly been this way since 9.5 at the very least.

Re: Performance

ccavanna — Mon, 20 Jan 2014 18:27:03 GMT

I see this in my deployments all the time. It is usually attributed to low i/o and the esxi host queuing the i/o until it gets enough then releases it. In my environment under heavy i/o load I have much lower latency than when i have low i/o.

Re: Performance

HRRVHP — Mon, 20 Jan 2014 18:49:15 GMT

I would ignore if I didn't get complaints about performance. Does anyone know a way around this? Seems to be a good explaination since at the DR site im running 16 10k drives under Hype-rv with less than 100 i/o. )=

Re: Performance

ccavanna — Wed, 22 Jan 2014 23:09:16 GMT

So are you saying you are getting complaints? If so what is the queue depth at how many drives and what speed are they?