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!==
!== Speed2.txt for Samba release 2.0.4 18 May 1999
!==
Contributor: Paul Cochrane <paulc@dth.scot.nhs.uk>
Organization: Dundee Limb Fitting Centre
Date: Fri, 10 Apr 1998
Subject: Samba SPEED.TXT comment
=============================================================================
This might be relevant to Client Tuning. I have been trying various methods
of getting win95 to talk to Samba quicker. The results I have come up with
are:
1. Install the W2setup.exe file from www.microsoft.com. This is an
update for the winsock stack and utilities which improve performance.
2. Configure the win95 TCPIP registry settings to give better
perfomance. I use a program called MTUSPEED.exe which I got off the
net. There are various other utilities of this type freely available.
The setting which give the best performance for me are:
(a) MaxMTU Remove
(b) RWIN Remove
(c) MTUAutoDiscover Disable
(d) MTUBlackHoleDetect Disable
(e) Time To Live Enabled
(f) Time To Live - HOPS 32
(g) NDI Cache Size 0
3. I tried virtually all of the items mentioned in the document and
the only one which made a difference to me was the socket options. It
turned out I was better off without any!!!!!
In terms of overall speed of transfer, between various win95 clients
and a DX2-66 20MB server with a crappy NE2000 compatible and old IDE
drive (Kernel 2.0.30). The transfer rate was reasonable for 10 baseT.
The figures are: Put Get
P166 client 3Com card: 420-440kB/s 500-520kB/s
P100 client 3Com card: 390-410kB/s 490-510kB/s
DX4-75 client NE2000: 370-380kB/s 330-350kB/s
I based these test on transfer two files a 4.5MB text file and a 15MB
textfile. The results arn't bad considering the hardware Samba is
running on. It's a crap machine!!!!
The updates mentioned in 1 and 2 brought up the transfer rates from
just over 100kB/s in some clients.
A new client is a P333 connected via a 100MB/s card and hub. The
transfer rates from this were good: 450-500kB/s on put and 600+kB/s
on get.
Looking at standard FTP throughput, Samba is a bit slower (100kB/s
upwards). I suppose there is more going on in the samba protocol, but
if it could get up to the rate of FTP the perfomance would be quite
staggering.
Paul Cochrane
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