Displaying 20 results from an estimated 30 matches for "asvc_t".
2010 Jun 21
0
Seriously degraded SAS multipathing performance
...OD: Supermicro SC846E2-R900B (Dual LSI SASX36 3Gb/s Expander
Backplane, 24 Hot Swap drives)
22 x Seagate Constellation ES SAS drives
Performance I''m seeing with Multipathing Enabled (driver: mpt_sas):
With only one of the two paths connected:
1 drive connected: 137 MB/s sustained write, asvc_t: 8 ms
22 drives connected: 1.1 GB/s sustained write, asvc_t: 12 ms
With two paths connected, round-robin enabled:
1 drive connected: 13.7 MB/s sustained write, asvc_t: 25 ms
22 drives: 235 MB/s sustained write, asvc_t: 99 ms
With two paths connected, round-robin disabled, pin half the drives to...
2010 Mar 11
1
zpool iostat / how to tell if your iop bound
What is the best way to tell if your bound by the number of individual
operations per second / random io? "zpool iostat" has an "operations" column
but this doesn''t really tell me if my disks are saturated. Traditional
"iostat" doesn''t seem to be the greatest place to look when utilizing zfs.
Thanks,
Chris
-------------- next part --------------
An
2009 Dec 16
27
zfs hanging during reads
...o read from the pool. When the pool is in it''s very slow/hung state, you can''t do anything with the devices.
Here''s my devices:
tim at opensolaris:~$ iostat -xnz
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
1.5 2.7 98.1 29.4 0.1 0.0 18.6 8.3 1 2 c0d0
3.9 0.6 220.9 57.9 0.0 0.0 5.6 1.2 0 0 c6d1
8.1 0.0 456.8 0.0 0.0 0.0 0.4 0.5 0 0 c3t0d0
12.8 0.0 717.7 0.0 5.5 0.2 433.1 14.6 18 19 c3t1d0
4.9 0.0...
2007 May 14
37
Lots of overhead with ZFS - what am I doing wrong?
I was trying to simply test bandwidth that Solaris/ZFS (Nevada b63) can deliver from a drive, and doing this:
dd if=(raw disk) of=/dev/null gives me around 80MB/s, while dd if=(file on ZFS) of=/dev/null gives me only 35MB/s!?. I am getting basically the same result whether it is single zfs drive, mirror or a stripe (I am testing with two Seagate 7200.10 320G drives hanging off the same interface
2008 Dec 17
12
disk utilization is over 200%
...0+1 = OS disk =72 GB = d0
2+3 = apps data disk = 146 GB = d2, SVM soft partition with one UFS
file system is active
at that time, iostat showed strange output:
cpu
us sy wt id
13 9 0 78
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.0 0.0 0.0 0.0 335.0 0.0 0.0 0 100 md/d30
0.0 0.0 0.0 0.0 0.0 335.0 0.0 0.0 0 100 md/d40
0.0 0.0 0.0 0.0 0.0 335.0 0.0 0.0 0 100 md/d52
0.0 0.0 0.0 0.0 334.0 1.0 0.0 0.0 100 100 c3t2d0
cpu...
2008 Oct 08
1
Troubleshooting ZFS performance with SIL3124 cards
....
If you look at the output from iostat -cxn 1 below you find that the
first one is okay but the
second on the disks are in 100 %w... and it stays at 100 %w for a few
seconds.
us sy wt id
0 34 0 66
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c4t0d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d0
0.0 400.9 0.0 49560.1 14.1 0.5 35.2 1.2 47 48 c5t0d0
0.0 15...
2011 Jun 01
11
SATA disk perf question
I figure this group will know better than any other I have contact
with, is 700-800 I/Ops reasonable for a 7200 RPM SATA drive (1 TB Sun
badged Seagate ST31000N in a J4400) ? I have a resilver running and am
seeing about 700-800 writes/sec. on the hot spare as it resilvers.
There is no other I/O activity on this box, as this is a remote
replication target for production data. I have a the
2007 Feb 13
2
zpool export consumes whole CPU and takes more than 30 minutes to complete
...t42d0 ONLINE 0 0 0
c2t42d1 ONLINE 0 0 0
c2t42d2 ONLINE 0 0 0
errors: No known data errors
bash-3.00# iostat -xnz 1
[...]
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 16.2 0.0 35.4 0.0 0.1 0.0 3.7 0 2 c2t42d2
0.0 31.3 0.0 634.3 0.0 0.1 0.0 4.1 0 3 c2t42d1
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 3.0...
2009 Apr 12
7
Any news on ZFS bug 6535172?
We''re running a Cyrus IMAP server on a T2000 under Solaris 10 with
about 1 TB of mailboxes on ZFS filesystems. Recently, when under
load, we''ve had incidents where IMAP operations became very slow. The
general symptoms are that the number of imapd, pop3d, and lmtpd
processes increases, the CPU load average increases, but the ZFS I/O
bandwidth decreases. At the same time, ZFS
2006 Jul 30
6
zfs mount stuck in zil_replay
...ad8, 0, 0, ff38e40c, 100)
000002a10069f221 syscall_ap+0x44(2a0, ffbfeca0, 1118bf4, 600013fbc40, 15, 0)
000002a10069f2e1 syscall_trap32+0xcc(52b3c8, ffbfeca0, 100, ff38e40c, 0, 0)
>
# iostat -xnz 1
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
3.0 513.0 192.0 2822.1 0.0 2.1 0.0 4.0 0 95 c4t600C0FF00000000009258F3E4C4C5601d0
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
7.0 598.1 388.6 1832.9 0.0 2.0 0.0 3.4 0 93 c4t600C0F...
2012 Jul 18
4
asterisk 1.8 on Solaris/sparc
I've got the latest asterisk 1.8 running on a Netra X1 with Solaris 10 u10.
The system itself is happy and phone calls (between two parties) seem fine.
Unfortunately, when a caller listens to a Playback recording, there
seems to be moments of stutter - perhaps 1 second of stutter for every
10 seconds of Playback. The stutter is not consistent at the same point
of the playback file.
To
2006 Sep 07
5
Performance problem of ZFS ( Sol 10U2 )
...s 2000rq one sec.
Reads are sustained at cca 800rq/s.
Is there a way to tune this read/write ratio? Is this know problem?
I tried to change vq_max_pending as suggested by Eric in http://blogs.sun.com/erickustarz/entry/vq_max_pending
But no change in this write behaviour.
Iostat shows cca 20-30ms asvc_t, 0%w, and cca 30% busy on all drives so these are not saturated it seems. (before with UTF they had 90%busy, 1%wait).
System is Sol 10 U2, sun x4200, 4GB RAM.
Please if you could give me some hint to really make this working as the way back to UFS is almost impossible on live system.
--
Ivan...
2007 Dec 12
0
Degraded zpool won''t online disk device, instead resilvers spare
...00
^Z
[1]+ Stopped dd if=/dev/rdsk/c5t29d0 of=tst bs=1024 count=1000000
ROOT $ bg
[1]+ dd if=/dev/rdsk/c5t29d0 of=tst bs=1024 count=1000000 &
ROOT $ iostat -xn c5t29d0 1
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
3.8 0.1 4.1 0.0 0.0 0.0 0.0 0.2 0 0 c5t29d0
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
5018.1 2.0 5031.1 0.0 0.0 0.8 0.0 0.2 5 80 c5t29d0...
2009 Dec 28
0
[storage-discuss] high read iops - more memory for arc?
...gured on a 32GB Intel
> X25-E ssd and slog on another32GB X25-E ssd.
> >
> > According to our tester, Oracle writes are extremely
> slow (high latency).???
> >
> > Below is a snippet of iostat:
> >
> >? ???r/s? ?
> w/s???Mr/s???Mw/s wait actv
> wsvc_t asvc_t? %w? %b device
> >? ???0.0? ? 0.0?
> ? 0.0? ? 0.0? 0.0? 0.0? ?
> 0.0? ? 0.0???0???0
> c0
> >? ???0.0? ? 0.0?
> ? 0.0? ? 0.0? 0.0? 0.0? ?
> 0.0? ? 0.0???0???0
> c0t0d0
> >?
> 4898.3???34.2???23.2?
> ? 1.4? 0.1 385.3? ?
> 0.0???78.1???0 1246 c1
> >?...
2005 Aug 29
14
Oracle 9.2.0.6 on Solaris 10
How can I tell if this is normal behaviour? Oracle imports are horribly slow, an order of magnitude slower than on the same hardware with a slower disk array and Solaris 9. What I can look for to see where the problem lies?
The server is 99% idle right now, with one database running. Each sample is about 5 seconds. I''ve tried setting kernel parameters despite the docs saying that
2009 Dec 24
1
high read iops - more memory for arc?
...tuating between 200MB -> 450MB out of 16GB total. We have the l2arc configured on a 32GB Intel X25-E ssd and slog on another32GB X25-E ssd.
According to our tester, Oracle writes are extremely slow (high latency).
Below is a snippet of iostat:
r/s w/s Mr/s Mw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d0
4898.3 34.2 23.2 1.4 0.1 385.3 0.0 78.1 0 1246 c1
0.0 0.8 0.0 0.0 0.0 0.0 0.0 16.0 0 1 c1t0d0
401.7 0.0...
2007 Apr 11
0
raidz2 another resilver problem
....3T 592 321 9.43M 460K
thumper-9 761G 19.3T 421 196 8.25M 254K
thumper-9 761G 19.3T 550 201 22.6M 290K
^C
bash-3.00#
But:
bash-3.00# iostat -xnz 1
[removed first output]
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
25.1 0.0 904.7 0.0 0.0 0.1 0.8 5.9 2 15 c4t0d0
20.1 0.0 711.0 0.0 0.0 0.1 0.0 5.9 0 12 c6t0d0
23.1 0.0 776.3 0.0 0.0 0.1 1.5 6.2 3 14 c1t0d0
22.1 0.0 585.6 0.0 0.0 0.1 0.3 6.1 1 14 c6t1d0
20.1 0...
2007 Jul 31
0
controller number mismatch
Hi,
I just noticed something interesting ... don''t know whether it''s
relevant or not (two commands run in succession during a ''nightly'' run):
$ iostat -xnz 6
[...]
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.3 0.0 0.8 0.0 0.0 0.2 0.2 0 0 c2t0d0
2.2 79.8 128.7 216.1 0.0 0.1 0.1 1.4 1 6 c1t0d0
2.0 76.8 118.1 208.6 0.0 0.1 0.1 1.2 1 4 c1t1d0
1.7 79.0 106.7 216.1 0.0 0.1 0.1 1.1 1 5 c1t2d0
2.2...
2006 May 23
1
iostat numbers for ZFS disks, build 39
I updated an i386 system to b39 yesterday, and noticed this when
running iostat:
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.5 0.0 10.0 0.0 0.0 0.0 0.5 0 0 c0t0d0
0.0 0.5 0.0 10.0 0.0 0.0 0.0 0.6 0 0 c0t1d0
0.0 65.1 0.0 119640001.5 0.0 0.0 0.0 0.3 0 2 c0t2d0
0.0 65.1 0.0 119640090.2 0.0 0.0 0.0 0.3 0 2 c0t3d0
c...
2005 Nov 20
2
ZFS & small files
...60 176532 0 0 0 0 0 0 0 34 0 0 0 411 122107 985 7 93 0
0 0 60 886412 170284 2 3 0 0 0 0 0 42 0 0 0 417 111849 1077 7 85 8
0 0 60 883332 167040 0 0 0 0 0 0 0 15 0 0 0 391 475 354 0 1 99
output from iostat -xcn 5:
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 9.6 0.0 70.9 0.0 0.0 0.0 1.5 0 1 c1t0d0
0.0 38.4 0.0 559.8 0.0 0.6 0.0 15.3 0 4 c1t0d0
0.4 41.8 3.2 646.5 0.0 0.5 0.0 11.9 0 4 c1t0d0
0.0 30.4 0.0 551.9 0.0 0.4 0.0 12.5 0 3 c1t0d0
0.2 28...