Re: immense delayed write to file system (ZFS and UFS2), performance issues

2010-01-19 Thread krad
2010/1/18 Morgan Wesström freebsd-questi...@pp.dyndns.biz O. Hartmann wrote: I realise a strange behaviour of several FreeBSD 8.0-STABLE/amd64 boxes. All boxes have the most recent STABLE. One box is a UP system, two others SMP boxes, one with a Q6600 4-core, another XEON with 2x 4-cores

Re: immense delayed write to file system (ZFS and UFS2), performance issues

2010-01-19 Thread Morgan Wesström
Emil Mikulic wrote: (off-list) On Tue, Jan 19, 2010 at 04:32:34PM +0100, Morgan Wesstr?m wrote: Emil Mikulic wrote: On Tue, Jan 19, 2010 at 09:16:41AM +0100, Gerrit K?hn wrote: Thanks for bringing up this topic here. I have drives showing up close to 80 load cycle counts here. Guess

Re: immense delayed write to file system (ZFS and UFS2), performance issues

2010-01-19 Thread O. Hartmann
On 01/18/10 21:34, � wrote: O. Hartmann wrote: I realise a strange behaviour of several FreeBSD 8.0-STABLE/amd64 boxes. All boxes have the most recent STABLE. One box is a UP system, two others SMP boxes, one with a Q6600 4-core, another XEON with 2x 4-cores (Dell Poweredge III). Symptome: All

Re: immense delayed write to file system (ZFS and UFS2), performance issues

2010-01-19 Thread O. Hartmann
On 01/19/10 10:09, krad wrote: 2010/1/18 Morgan Wesstr�mfreebsd-questi...@pp.dyndns.biz O. Hartmann wrote: I realise a strange behaviour of several FreeBSD 8.0-STABLE/amd64 boxes. All boxes have the most recent STABLE. One box is a UP system, two others SMP boxes, one with a Q6600 4-core,

immense delayed write to file system (ZFS and UFS2), performance issues

2010-01-18 Thread O. Hartmann
I realise a strange behaviour of several FreeBSD 8.0-STABLE/amd64 boxes. All boxes have the most recent STABLE. One box is a UP system, two others SMP boxes, one with a Q6600 4-core, another XEON with 2x 4-cores (Dell Poweredge III). Symptome: All boxes have ZFS and UFS2 filesystems. Since

Re: immense delayed write to file system (ZFS and UFS2), performance issues

2010-01-18 Thread Morgan Wesström
O. Hartmann wrote: I realise a strange behaviour of several FreeBSD 8.0-STABLE/amd64 boxes. All boxes have the most recent STABLE. One box is a UP system, two others SMP boxes, one with a Q6600 4-core, another XEON with 2x 4-cores (Dell Poweredge III). Symptome: All boxes have ZFS and UFS2

Re: immense delayed write to file system (ZFS and UFS2), performance issues

2010-01-18 Thread Daniel O'Connor
On Tue, 19 Jan 2010, Morgan Wesström wrote: The disks involved don't happen to be Western Digital Green Power disks, do they? The Intelli-Park function in these disks are wrecking havoc with I/O in Linux-land at least, causing massive stalls and iowait through the roof during the 25-30 seconds