Tomas,
Apologies for delayed response...
Tomas Ögren wrote:
Interesting ! So, it is not the ARC which is consuming too much memory
It is some other piece (not sure if it belongs to ZFS) which is causing
the crunch...
Or the other possibility is that ARC ate up too much and caused a
On 13 November, 2006 - Eric Kustarz sent me these 2,4K bytes:
Tomas Ögren wrote:
On 13 November, 2006 - Sanjeev Bagewadi sent me these 7,1K bytes:
Regarding the huge number of reads, I am sure you have already tried
disabling the VDEV prefetch.
If not, it is worth a try.
That was part of
On 13 November, 2006 - Sanjeev Bagewadi sent me these 7,1K bytes:
Tomas,
comments inline...
arc::print struct arc
{
anon = ARC_anon
mru = ARC_mru
mru_ghost = ARC_mru_ghost
mfu = ARC_mfu
mfu_ghost = ARC_mfu_ghost
size = 0x6f7a400
p =
Tomas Ögren writes:
On 13 November, 2006 - Sanjeev Bagewadi sent me these 7,1K bytes:
Tomas,
comments inline...
arc::print struct arc
{
anon = ARC_anon
mru = ARC_mru
mru_ghost = ARC_mru_ghost
mfu = ARC_mfu
Tomas Ögren wrote:
On 13 November, 2006 - Sanjeev Bagewadi sent me these 7,1K bytes:
Tomas,
comments inline...
arc::print struct arc
{
anon = ARC_anon
mru = ARC_mru
mru_ghost = ARC_mru_ghost
mfu = ARC_mfu
mfu_ghost = ARC_mfu_ghost
size = 0x6f7a400
p = 0x5d9bd5a
Tomas,
comments inline...
Tomas Ögren wrote:
On 10 November, 2006 - Sanjeev Bagewadi sent me these 3,5K bytes:
1. DNLC-through-ZFS doesn't seem to listen to ncsize.
The filesystem currently has ~550k inodes and large portions of it is
frequently looked over with rsync (over nfs). mdb
Comments in line...
Neil Perrin wrote:
1. DNLC-through-ZFS doesn't seem to listen to ncsize.
The filesystem currently has ~550k inodes and large portions of it is
frequently looked over with rsync (over nfs). mdb said ncsize was
about
68k and vmstat -s said we had a hitrate of ~30%, so I
On 10 November, 2006 - Sanjeev Bagewadi sent me these 3,5K bytes:
Comments in line...
Neil Perrin wrote:
1. DNLC-through-ZFS doesn't seem to listen to ncsize.
The filesystem currently has ~550k inodes and large portions of it is
frequently looked over with rsync (over nfs). mdb said
Hello.
We're currently using a Sun Blade1000 (2x750MHz, 1G ram, 2x160MB/s mpt
scsi buses, skge GigE network) as a NFS backend with ZFS for
distribution of free software like Debian (cdimage.debian.org,
ftp.se.debian.org) and have run into some performance issues.
We are running SX snv_48 and
Tomas Ögren wrote On 11/09/06 09:59,:
1. DNLC-through-ZFS doesn't seem to listen to ncsize.
The filesystem currently has ~550k inodes and large portions of it is
frequently looked over with rsync (over nfs). mdb said ncsize was about
68k and vmstat -s said we had a hitrate of ~30%, so I set
Neil Perrin wrote:
Tomas Ögren wrote On 11/09/06 09:59,:
1. DNLC-through-ZFS doesn't seem to listen to ncsize.
The filesystem currently has ~550k inodes and large portions of it is
frequently looked over with rsync (over nfs). mdb said ncsize was about
68k and vmstat -s said we had a
On 09 November, 2006 - Neil Perrin sent me these 1,6K bytes:
Tomas Ögren wrote On 11/09/06 09:59,:
1. DNLC-through-ZFS doesn't seem to listen to ncsize.
The filesystem currently has ~550k inodes and large portions of it is
frequently looked over with rsync (over nfs). mdb said ncsize
eric kustarz wrote:
If the ARC detects low memory (via arc_reclaim_needed()), then we call
arc_kmem_reap_now() and subsequently dnlc_reduce_cache() - which
reduces the # of dnlc entries by 3% (ARC_REDUCE_DNLC_PERCENT).
So yeah, dnlc_nentries would be really interesting to see (especially
On 09 November, 2006 - Tomas Ögren sent me these 4,4K bytes:
On 09 November, 2006 - Neil Perrin sent me these 1,6K bytes:
nfs does have a maximum nmber of rnodes which is calculated from the
memory available. It doesn't look like nrnode_max can be overridden.
rnode seems to take 472
Brian Wong wrote:
eric kustarz wrote:
If the ARC detects low memory (via arc_reclaim_needed()), then we call
arc_kmem_reap_now() and subsequently dnlc_reduce_cache() - which
reduces the # of dnlc entries by 3% (ARC_REDUCE_DNLC_PERCENT).
So yeah, dnlc_nentries would be really interesting
Hello Tomas,
Thursday, November 9, 2006, 9:47:17 PM, you wrote:
TÖ On 09 November, 2006 - Neil Perrin sent me these 1,6K bytes:
TÖ Current memory usage (for some values of usage ;):
TÖ # echo ::memstat|mdb -k
TÖ Page SummaryPagesMB %Tot
TÖ
Tomas Ögren wrote On 11/09/06 13:47,:
On 09 November, 2006 - Neil Perrin sent me these 1,6K bytes:
Tomas Ögren wrote On 11/09/06 09:59,:
1. DNLC-through-ZFS doesn't seem to listen to ncsize.
The filesystem currently has ~550k inodes and large portions of it is
frequently looked
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