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From: live.fx on 14 Mar 2010 14:00



John M. Drescher wrote:
>
> Socket options will not quadruple your speed.
>
> I would start by investigating the reason for slowness. Is this with
> small files? What performance do you get for a 4GB file? Could
> permissions be slowing you down? Could it be the raid?
>
>

Thanks for attention.
Yes. Most problems with small files. This is a video-production pipeline,
and users who use Adobe After Effects - show me very slow progress. 1000 or
2000 files - every file 1-2 Mb - very slow copying.

Look to this please, i try to collect all possible info:

About shared storage:

1. hdparm -Tt /dev/sdb (sdb - is 2Tb RAID5 storage)
/dev/sdb:
Timing cached reads: 6124 MB in 2.00 seconds = 3064.40 MB/sec
Timing buffered disk reads: 634 MB in 3.01 seconds = 210.74 MB/sec

2. time dd if=/dev/zero of=/mnt/RAID/Projects/TEST_FILE bs=16384
count=262144
262144+0 records in
262144+0 records out
4294967296 bytes (4.3 GB) copied, 23.9356 s, 179 MB/s

real 0m23.996s
user 0m0.061s
sys 0m13.199s

=========================

Next. I remove all socket options lines from smb.conf

service smb reload

Now i try to upload 4GB file to server and get it from server trough SMB
protocol (i use now linux clients only, because work remotely)

1. downloading 4GB test file (3 tests - just copying inside MC):
34.00 MB/s , 35 MB/s, 26 MB/s

2. uploading 4GB test file to Server:
21 MB/s, 18 MB/s, 20 MB/s

= = = = = = =

1. upload 4GB file to server FTP:
100 MB/s, 90 MB/s, 100 MB/s
2. download 4GB from Server FTP
80 MB/s, 68 MB/s, 75 MB/s

The most big problem - the copying file from Windows PC to Windows PC - is
faster. (and clients ask me - why server is slow)
Can someone please show me properly benchmarks for SAMBA performance ? I can
show more results with it.

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From: live.fx on 14 Mar 2010 14:10



Miguel Medalha wrote:
>
>
>> Can you show me, how yours SAMBA work in Gigabit LAN ? What speeds ?
>>
>
> I can't measure them right now but I can tell you that I have 2 networks
> consisting of Samba Domain Controllers serving only Windows clients and
> the network speeds are very high. One of the networks is dedicated to
> Desktop Publishing and the InDesign pages coming from the Linux/Samba
> server appear on the Windows clients' screens like a sudden explosion.
> Very fast indeed.
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>
>

Please, when you can measure - show me results. My network is 15 linux nodes
(small render farm) 1 Linux desktop, 8-10 Windows clients. (also Windows 7 -
this because i use samba 3.5.1 - windows 7 domain clients can authorize on
SAMBA server only with 3.5 SAMBA)

I want to look what SAMBA can do.
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From: live.fx on 14 Mar 2010 15:30


Helmut Hullen wrote:
>
> Give a man a switch, and he'll switch!
> Viele Gruesse!
> Helmut
>

What about? What "switch" you mean?
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From: John Drescher on 14 Mar 2010 15:40
>> Give a man a switch, and he'll switch!
> What about? What "switch" you mean?

The "switch" here is a metaphor for ability to change the default
socket options.

Basically giving you an ability to change some setting does not mean
the setting will help if you do change it.

John
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From: live.fx on 15 Mar 2010 04:10


John M. Drescher wrote:
>
> The "switch" here is a metaphor for ability to change the default
> socket options.
> Basically giving you an ability to change some setting does not mean
> the setting will help if you do change it.
> John
>

Nice metaphor... I have insane number of trying, with all possible switches
combinations and no luck.

I want to see good SAMBA speed testing results, if this possible.
===============
What results i have today:

1. iperf test between Linux client and Server:

linuxnode1:~ # iperf -c Server -p 5001 -fm
------------------------------------------------------------
Client connecting to Server, TCP port 5001
TCP window size: 0.02 MByte (default)
------------------------------------------------------------
[ 3] local 192.168.0.34 port 49825 connected with 192.168.0.210 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1125 MBytes 943 Mbits/sec

linuxnode1:~ # iperf -c Server -p 5001 -fm
------------------------------------------------------------
Client connecting to Server, TCP port 5001
TCP window size: 0.02 MByte (default)
------------------------------------------------------------
[ 3] local 192.168.0.34 port 49828 connected with 192.168.0.210 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1125 MBytes 943 Mbits/sec

2. Copying 4GB file with SMB, NFS, and FTP to Server: ATTENTION - this
copying from linux, who mount Server trough CIFS. Test with windows copying
show different results - slower.

Copying to SMB share:
linuxnode1:~ # time cp /4GB_test.file /mnt/Server/
real 2m36.703s
user 0m0.079s
sys 0m11.794s

Copying to NFS share:
linuxnode1:~ # time cp /4GB_test.file /Server/Projects/
real 4m28.546s
user 0m0.180s
sys 0m30.209s

linuxnode1:/ # time cp -v /4GB_test.file /WinClient1/In_Out_Box/
`/4GB_test.file' -> `/WinClient1/In_Out_Box/4GB_test.file'

real 2m19.588s
user 0m0.077s
sys 0m8.274s

linuxnode1:/ #time scp /4GB_test.file user(a)Server:/mnt/RAID/Projects
Password:
4GB_test.file
100% 4096MB 58.5MB/s 01:10

real 1m12.289s
user 0m49.811s
sys 0m8.542s

===================================
Question.
What points, configs can i check, for getting faster SAMBA ?

And my primary question: Can SAMBA connections be fast like "Windows ->
Windows" connections ? Or i try to get something unreal ?

If yes - next questions:
1. SAMBA speed is depend from kernel or OS or both ? I use kernel
2.6.31.12-0.1-desktop, and OS=openSUSE 11.2 x86.
2. What difference between copying big files to SMB share and small ?

Very Many Thanks for answers..
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