Re: [zfs-discuss] sub-optimal ZFS performance

2009-11-02 Thread Miles Nordin
> "hj" == Henrik Johansson writes: hj> A "überquota" property for the whole pool would have been nice hj> [to get out-of-space errors instead of fragmentation] just make an empty filesystem with a reservation. That's what I do. NAMEUSED

Re: [zfs-discuss] sub-optimal ZFS performance

2009-10-29 Thread David Magda
On Oct 29, 2009, at 15:08, Henrik Johansson wrote: On Oct 29, 2009, at 5:23 PM, Bob Friesenhahn wrote: On Thu, 29 Oct 2009, Orvar Korvar wrote: So the solution is to never get more than 90% full disk space, för fan? Right. While UFS created artificial limits to keep the filesystem from

Re: [zfs-discuss] sub-optimal ZFS performance

2009-10-29 Thread Rob Logan
> So the solution is to never get more than 90% full disk space while that's true, its not Henrik's main discovery. Henrik points out that 1/4 of the arc is used for metadata, and sometime that's not enough.. if echo "::arc" | mdb -k | egrep ^size isn't reaching echo "::arc" | mdb -k | egrep "^

Re: [zfs-discuss] sub-optimal ZFS performance

2009-10-29 Thread Henrik Johansson
On Oct 29, 2009, at 5:23 PM, Bob Friesenhahn wrote: On Thu, 29 Oct 2009, Orvar Korvar wrote: So the solution is to never get more than 90% full disk space, för fan? Right. While UFS created artificial limits to keep the filesystem from getting so full that it became sluggish and "sick",

Re: [zfs-discuss] sub-optimal ZFS performance

2009-10-29 Thread Bob Friesenhahn
On Thu, 29 Oct 2009, Orvar Korvar wrote: So the solution is to never get more than 90% full disk space, för fan? Right. While UFS created artificial limits to keep the filesystem from getting so full that it became sluggish and "sick", ZFS does not seem to include those protections. Don't

Re: [zfs-discuss] sub-optimal ZFS performance

2009-10-29 Thread Orvar Korvar
So the solution is to never get more than 90% full disk space, för fan? -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] sub-optimal ZFS performance

2009-10-28 Thread Henrik Johansson
On Oct 16, 2009, at 1:01 AM, Henrik Johansson wrote: My guess would be that this is due to fragmentation during some time when the filesystem might have been close to full, but it is still pretty terrible numbers even with 0.5M files in the structure. And while this is very bad I would a

[zfs-discuss] sub-optimal ZFS performance

2009-10-15 Thread Henrik Johansson
Hello, ZFS is behaving strange on a OSOL laptop, your thoughts are welcome. I am running OSOL on my laptop, currently b124 and i found that the performance of ZFS is not optimal in all situations. If i check the how much space the package cache for pkg(1) uses, it takes a bit longer on thi