On Tue, Jul 12, 2011 at 09:09:58AM -0700, Matthew Dillon wrote: > blogbench --iterations=200 ... and you really need to include the > actual blogbench output. The final results are worthless.
I had not enough time to do long benchmarks on the machine anymore. Howewer, I can now use another one with only 4GB memory. How many iterations do you think would be enough to do a good test with this quantity of RAM ? > Linear write activity. I wonder why it isn't > clustering the I/O's, though. That was newfs_hammer > Try setting vfs.hammer.double_buffer=1. Will do in a future test. > : 0 3 15.94 288 4.48 1 0 85 0 14 > : 0 3 16.00 620 9.69 1 0 79 0 20 > : 0 3 16.00 352 5.50 1 0 84 0 15 > > This doesn't look good either. It shouldn't degrade that much, > though it's a bit hard to tell with iostat because it doesn't print > the disk busy %. What could I use to get meaningful data ? -- Francois Tigeot
