On Fri, 29.05.2009 at 12:47:38 +0200, Morgan Wesström wrote: > You can benchmark the encryption subsytem only, like this: > > # kldload geom_zero > # geli onetime -s 4096 -l 256 gzero > # sysctl kern.geom.zero.clear=0 > # dd if=/dev/gzero.eli of=/dev/null bs=1M count=512 > > 512+0 records in > 512+0 records out > 536870912 bytes transferred in 11.861871 secs (45260222 bytes/sec) > > The benchmark will use 256-bit AES and the numbers are from my Core2 Duo > Celeron E1200 1,6GHz. My old trusty Pentium III 933MHz performs at > 13MB/s on that test. Both machines are recompiled with CPUTYPE=core2 and > CPUTYPE=pentium3 respectively but unfortunately I have no benchmarks on > how they perform without the CPU optimizations.
Hi Morgan, thanks for the nice benchmarking trick. I tried this on two ~7.2 systems: CPU: Intel Pentium III (996.77-MHz 686-class CPU) -> 14.3MB/s CPU: Intel(R) Pentium(R) 4 CPU 2.80GHz (2793.01-MHz 686-class CPU) -> 47.5MB/s Reading a big file from the pool of this P4 results in 27.6MB/s netto transfer rate (single 7200 rpm SATA disk). I would be *very* interested in numbers from the dual core Atom, both with 2 CPUs and with 1 active core only. I think that having dual core is a must for this setup, so you can use 2 GELI threads and have the ZFS threads on top of that to spread the load. Cheers, Ulrich Spörlein -- http://www.dubistterrorist.de/ _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
