Running tcpdump to trace what samba is doing so maybe someone can give
some insight, lan interface is sk0.
02:52:34.347357 IP (tos 0x0, ttl 64, id 56121, offset 0, flags [none],
proto TCP (6), length 1500)
asterisk.microsoft-ds > desktop.58858: Flags [.], cksum 0x5e3f
(correct), seq 105687574:105689034, ack 63894978, win 256, length
1460SMB-over-TCP packet:(raw data or continuation?)
02:52:34.347361 IP (tos 0x0, ttl 64, id 56122, offset 0, flags [none],
proto TCP (6), length 1500)
asterisk.microsoft-ds > desktop.58858: Flags [.], cksum 0xbe99
(correct), seq 105689034:105690494, ack 63894978, win 256, length
1460SMB-over-TCP packet:(raw data or continuation?)
02:52:34.347365 IP (tos 0x0, ttl 64, id 56123, offset 0, flags [none],
proto TCP (6), length 1500)
asterisk.microsoft-ds > desktop.58858: Flags [.], cksum 0x0b31
(correct), seq 105690494:105691954, ack 63894978, win 256, length
1460SMB-over-TCP packet:(raw data or continuation?)
02:52:34.347369 IP (tos 0x0, ttl 64, id 56124, offset 0, flags [none],
proto TCP (6), length 1500)
asterisk.microsoft-ds > desktop.58858: Flags [.], cksum 0xaee6
(correct), seq 105691954:105693414, ack 63894978, win 256, length
1460SMB-over-TCP packet:(raw data or continuation?)
02:52:34.347372 IP (tos 0x0, ttl 64, id 56125, offset 0, flags [none],
proto TCP (6), length 1500)
asterisk.microsoft-ds > desktop.58858: Flags [.], cksum 0xcff5
(correct), seq 105693414:105694874, ack 63894978, win 256, length
1460SMB-over-TCP packet:(raw data or continuation?)
02:52:34.347376 IP (tos 0x0, ttl 64, id 56126, offset 0, flags [none],
proto TCP (6), length 1500)
asterisk.microsoft-ds > desktop.58858: Flags [.], cksum 0xd893
(correct), seq 105694874:105696334, ack 63894978, win 256, length
1460SMB-over-TCP packet:(raw data or continuation?)
We get a ton of these, my mapped samba drive on Z: becomes nearly
unresponsive after i start transferring things through it, yet I can jump
on Y: drive which is NFS mount to same interface on machine and everything
is fine and responsive....
Dan.
--
Dan The Man
CTO/ Senior System Administrator
Websites, Domains and Everything else
http://www.SunSaturn.com
Email: d...@sunsaturn.com
On Sat, 12 Nov 2011, Dan The Man wrote:
Well been running a week now and problems again. 3 3 terrabyte drives are
@85% with compression enabled, i have to wonder if that is part of the
problem.
Dan.
--
Dan The Man
CTO/ Senior System Administrator
Websites, Domains and Everything else
http://www.SunSaturn.com
Email: d...@sunsaturn.com
On Wed, 9 Nov 2011, Kurt Touet wrote:
On Wed, Nov 9, 2011 at 1:07 AM, Daniel O'Connor <docon...@gsoft.com.au>
wrote:
On 09/11/2011, at 17:32, Garrett Cooper wrote
dd's of large files (spooled backups going to tape) to /dev/null are as
slow as Samba.
- Dedupe?
Nope.
- Compression?
On the mail spool & ports, but not on the tape spool.
- How much RAM?
8GB.
- What debug options do you have enabled in the kernel?
It is 8.2-GENERIC so.. no WITNESS (for example)
I've been noticing a slowdown in some respects with NFS/SMB, but I
suspected it was because I have an re(4) based NIC. ZFS has also wired
down a lot of my system memory for the L2ARC…
re isn't great but I wouldn't expect it to slow down over time.. Unless
bounce buffers got used more and more or something.
I have an em0 card in this system - but in any case it is slow locally
(i.e. dd a large file with 64k block size).
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
Right now (while experience slow writes via samba+zfs) this is general
read speed off a 4 x 1.5TB sata2 raidz1:
# dd if=test.file of=/dev/null
13753502+1 records in
13753502+1 records out
7041793036 bytes transferred in 100.020897 secs (70403218 bytes/sec)
That's not in the same ball park of slow writes, but it is below what
I expect for reads.
My setup is a little odd: 4x1.5tb raidz sata2 on mobo + 2 x 2tb
mirror on sata1 pci controller, zfs v28, stable/9 r227357, amd x4 810
2.6ghz, 4gb ram, no dedupe, no compression, daily snapshots saved for
7 days
The above file read was stored before the 2 x 2tb mirror addition, so
it was a solely read off the sata2 mobo ports. Reading off of
something more recent (and split amongst both raidz1 and mirror
vdevs):
# dd if=test2.file of=/dev/null
9154715+1 records in
9154715+1 records out
4687214153 bytes transferred in 82.963181 secs (56497522 bytes/sec)
This is, again, seems slower than usual, but not as terrible as the
write speeds that I've been seeing via samba.
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