I was experimenting with iscsi earlier, using both a flat file as the backing store and also a zvol. I noticed that the zvol was giving me dreadful performance - reading at about 20 meg/second and writing at about 12. the fklat file gives about 45 meg/second both ways.
i thouht it was to do wuth the iscsi layer, but I then tried it using dd on the machinbe itself and got the same results. it seems very curious - I am creating both the filesystem for the iscsi file and the zvol on the same pool, so the underlying discs (4 x 15k SCSI drives on U320) are the same in both places, as is the pool. anybody got any opinions ? this is on 7.1-RC2, but I have nothing else to compare it to. -pete. _______________________________________________ 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"
