Bob Friesenhahn wrote: > On Mon, 15 Jun 2009, Shannon Fiume wrote: > >> I just installed 2009.06 and found that compression isn't enabled by >> default when filesystems are created. Does is make sense to have an >> RFE open for this? (I'll open one tonight if need be.) We keep telling >> people to turn on compression. Are there any situations where turning >> on compression doesn't make sense, like rpool/swap? what about >> rpool/dump? > > In most cases compression is not desireable. It consumes CPU and > results in uneven system performance.
IIRC there was a blog about I/O performance with ZFS stating that it was faster with compression ON as it didn't have to wait for so much data from the disks and that the CPU was fast at unpacking data. But sure, it uses more CPU (and probably memory). _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
