Re: [PERFORM] block device benchmarking

2009-01-11 Thread M. Edward (Ed) Borasky
Markus Wanner wrote: > M. Edward (Ed) Borasky wrote: >> Check out the work of Jens Axboe and Alan Brunelle, specifically the >> packages "blktrace" and "fio". >> BTW ... I am working on my blktrace howto even as I type this. I don't >> have an ETA -- that's going to depend on how long it takes me t

Re: [PERFORM] block device benchmarking

2009-01-11 Thread Markus Wanner
Hi, M. Edward (Ed) Borasky wrote: > Check out the work of Jens Axboe and Alan Brunelle, specifically the > packages "blktrace" and "fio". Thank you for these pointers, that looks pretty interesting. > There are also some more generic filesystem benchmarks like "iozone" and > "bonnie++". Those a

Re: [PERFORM] block device benchmarking

2009-01-10 Thread M. Edward (Ed) Borasky
Markus Wanner wrote: > Hi, > > I'm fiddling with a hand-made block device based benchmarking thingie, > which I want to run random reads and writes of relatively small blocks > (somewhat similar to databases). I'm much less interested in measuring > throughput, but rather in latency. Besides varyi

[PERFORM] block device benchmarking

2009-01-10 Thread Markus Wanner
Hi, I'm fiddling with a hand-made block device based benchmarking thingie, which I want to run random reads and writes of relatively small blocks (somewhat similar to databases). I'm much less interested in measuring throughput, but rather in latency. Besides varying block sizes, I'm also testing