2) That's roughly the speed I'd expect without queueing. Is it really making effective use of queueing, or is something limiting queueing to one transfer at a time?
still 400-500 IOPS is way too little.
FreeBSD without VM machine can do well over 10000 IOPS of 512 byte sequential read with single process on my laptop using less than 20% of single not blazing fast CPU.
dd if=/dev/ada0 of=/dev/null bs=512 117593+0 records in 117593+0 records out 60207616 bytes transferred in 7.709451 secs (7809585 bytes/sec) CPU: Pentium(R) Dual-Core CPU T4500 @ 2.30GHz (2294.56-MHz K8-class CPU) _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
