Re: kern/37025 (mount_smbfs write performance is <censored>)

["Martin S. Weber" <Ephaeton%gmx.net@localhost>]

The following reply was made to PR kern/37025; it has been noted by GNATS.

From: "Martin S. Weber" <Ephaeton%gmx.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/37025 (mount_smbfs write performance is <censored>)
Date: Mon, 22 Mar 2010 21:51:40 -0400

 Alright, I've measured -current, too. The image is basically the same as
 with -5: cp, mv etc. work fast while dd with varying blocksizes build up
 as the other measurements show. So smbclient still outperforms NetBSD's
 kernel supported smbfs mount - just a bit for cp etc., and seriously for
 dd with non-ridiculous blocksizes.
 
 Now where to go from here? I still believe there's a problem here, 
 although the situation seriously improved in contrast to the eons
 ago when I first filed this PR.
 
 Also the problem with random hangs of the mount persists. I haven't
 seen this happening with smbclient yet, only with a mount_smbfs-mounted
 share.
 
 -Martin
 
 -current results:
 
 dd writing
 bs:512 block:obs 259020+0 records in
 259020+0 records out
 132618240 bytes transferred in 171.851 secs (771704 bytes/sec)
 bs:512 block:bs 259020+0 records in
 259020+0 records out
 132618240 bytes transferred in 118.349 secs (1120569 bytes/sec)
 dd reading
 bs:512 block:ibs 259020+0 records in
 259020+0 records out
 132618240 bytes transferred in 130.862 secs (1013420 bytes/sec)
 bs:512 block:bs 259020+0 records in
 259020+0 records out
 132618240 bytes transferred in 120.308 secs (1102322 bytes/sec)
 dd writing
 bs:1024 block:obs 259020+0 records in
 129510+0 records out
 132618240 bytes transferred in 74.345 secs (1783821 bytes/sec)
 bs:1024 block:bs 129510+0 records in
 129510+0 records out
 132618240 bytes transferred in 71.654 secs (1850814 bytes/sec)
 dd reading
 bs:1024 block:ibs 129510+0 records in
 259020+0 records out
 132618240 bytes transferred in 60.762 secs (2182585 bytes/sec)
 bs:1024 block:bs 129510+0 records in
 129510+0 records out
 132618240 bytes transferred in 61.042 secs (2172573 bytes/sec)
 dd writing
 bs:2048 block:obs 259020+0 records in
 64755+0 records out
 132618240 bytes transferred in 40.570 secs (3268874 bytes/sec)
 bs:2048 block:bs 64755+0 records in
 64755+0 records out
 132618240 bytes transferred in 40.334 secs (3288001 bytes/sec)
 dd reading
 bs:2048 block:ibs 64755+0 records in
 259020+0 records out
 132618240 bytes transferred in 41.401 secs (3203261 bytes/sec)
 bs:2048 block:bs 64755+0 records in
 64755+0 records out
 132618240 bytes transferred in 39.635 secs (3345988 bytes/sec)
 dd writing
 bs:4096 block:obs 259020+0 records in
 32377+1 records out
 132618240 bytes transferred in 25.979 secs (5104824 bytes/sec)
 bs:4096 block:bs 32377+1 records in
 32377+1 records out
 132618240 bytes transferred in 26.142 secs (5072995 bytes/sec)
 dd reading
 bs:4096 block:ibs 32377+1 records in
 259020+0 records out
 132618240 bytes transferred in 26.150 secs (5071443 bytes/sec)
 bs:4096 block:bs 32377+1 records in
 32377+1 records out
 132618240 bytes transferred in 24.839 secs (5339113 bytes/sec)
 dd writing
 bs:8192 block:obs 259020+0 records in
 16188+1 records out
 132618240 bytes transferred in 19.214 secs (6902167 bytes/sec)
 bs:8192 block:bs 16188+1 records in
 16188+1 records out
 132618240 bytes transferred in 18.975 secs (6989103 bytes/sec)
 dd reading
 bs:8192 block:ibs 16188+1 records in
 259020+0 records out
 132618240 bytes transferred in 21.275 secs (6233524 bytes/sec)
 bs:8192 block:bs 16188+1 records in
 16188+1 records out
 132618240 bytes transferred in 20.035 secs (6619328 bytes/sec)
 dd writing
 bs:16384 block:obs 259020+0 records in
 8094+1 records out
 132618240 bytes transferred in 15.925 secs (8327675 bytes/sec)
 bs:16384 block:bs 8094+1 records in
 8094+1 records out
 132618240 bytes transferred in 15.859 secs (8362333 bytes/sec)
 dd reading
 bs:16384 block:ibs 8094+1 records in
 259020+0 records out
 132618240 bytes transferred in 17.842 secs (7432924 bytes/sec)
 bs:16384 block:bs 8094+1 records in
 8094+1 records out
 132618240 bytes transferred in 16.072 secs (8251508 bytes/sec)
 dd writing
 bs:32768 block:obs 259020+0 records in
 4047+1 records out
 132618240 bytes transferred in 14.317 secs (9262990 bytes/sec)
 bs:32768 block:bs 4047+1 records in
 4047+1 records out
 132618240 bytes transferred in 14.157 secs (9367679 bytes/sec)
 dd reading
 bs:32768 block:ibs 4047+1 records in
 259020+0 records out
 132618240 bytes transferred in 15.469 secs (8573161 bytes/sec)
 bs:32768 block:bs 4047+1 records in
 4047+1 records out
 132618240 bytes transferred in 13.937 secs (9515551 bytes/sec)
 dd writing
 bs:65536 block:obs 259020+0 records in
 2023+1 records out
 132618240 bytes transferred in 14.156 secs (9368341 bytes/sec)
 bs:65536 block:bs 2023+1 records in
 2023+1 records out
 132618240 bytes transferred in 13.853 secs (9573250 bytes/sec)
 dd reading
 bs:65536 block:ibs 2023+1 records in
 259020+0 records out
 132618240 bytes transferred in 986.283 secs (134462 bytes/sec)
 bs:65536 block:bs 2023+1 records in
 2023+1 records out
 132618240 bytes transferred in 13.984 secs (9483569 bytes/sec)
 
 smbclient reading
 Domain=[$DOMAIN] OS=[BlueArc Titan 6.1.1684.20] Server=[BlueArc Titan 
6.1.1684.20]
 getting file ...\release.tar of size 132618240 as release.tar (10033.3 kb/s) 
(average 10033.3 kb/s)
 smbclient writing
 Domain=[$DOMAIN] OS=[BlueArc Titan 6.1.1684.20] Server=[BlueArc Titan 
6.1.1684.20]
 putting file release.tar as ...\release.tar (9291.9 kb/s) (average 9291.9 kb/s)