On 5/1/12, Ray Van Dolson wrote: > The problem is this box has 144GB of memory. If I go with a 16GB file > size (which I did), then memory and caching influences the results > pretty severely (I get around 3GB/sec for writes!).
The idea of benchmarking -- IMHO -- is to vaguely attempt to reproduce real world loads. Obviously, this is an imperfect science but if you're going to be writing a lot of small files (e.g. NNTP or email servers used to be a good real world example) then you're going to want to benchmark for that. If you're going to want to write a bunch of huge files (are you writing a lot of 16GB files?) then you'll want to test for that. Caching anywhere in the pipeline is important for benchmarks because you aren't going to turn off a cache or remove RAM in production are you? -Gary _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
