On Wed Jul 28 10, Dag-Erling Smørgrav wrote: > Alexander Best <arun...@freebsd.org> writes: > > i just stumpled upon this article over at phoronix which benchmarks > > ZFS ATA vs. ZFS CAM ATA on freebsd 8.1 [1]. it seems read performance > > is really low when CAM ATA is enabled. i remember phoronix being > > famous for posting stupid benchmarks (RELASE vs. HEAD and > > such). however their benchmark results in this example seem to be > > valid. > > I didn't look too closely at the details, but I don't understand why > they include gzip and lzma compression in a filesystem performance test. > > BTW, the 8 + head tinderbox runs ZFS on an 64 GB SSD. When I tested > ahci last October, I saw a 7% loss of performance with four paralell > builds. I haven't tried a newer kernel.
i'd like to do a benchmark UFS2+SU+SUJ ATA vs UFS2+SU+SUJ CAM ATA myself. any recommendations which benchmarks/* port to use? cheers. alex > > DES > -- > Dag-Erling Smørgrav - d...@des.no -- a13x _______________________________________________ freebsd-chat@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-chat To unsubscribe, send any mail to "freebsd-chat-unsubscr...@freebsd.org"
