[Samba] Really bad Read performance

Noel Kelly nkelly at citrusnetworks.net
Mon Jan 27 08:55:01 GMT 2003

That is the insidious nature of network hardware I'm afraid - horrible
errors can easily go unreported and undetected.  Well done for detecting it
and pursuing it rather than ignoring it!

----- Original Message -----
From: "Thomas Nilsen" <Thomas.Nilsen at roxar.com>
To: "Noel Kelly" <nkelly at citrusnetworks.net>
Cc: <samba at lists.samba.org>; "Bradley W. Langhorst" <brad at langhorst.com>
Sent: Monday, January 27, 2003 7:01 AM
Subject: RE: [Samba] Really bad Read performance

> Turned out to be a hardware issue. The server NIC was forced 100/DF, but
setting this back to auto-negotiate solved the issue. But for some reason,
copy and read from a SMB share mounted under linux gave flawless
performance. ifconfig didn't show any errors either.
> Thomas
> >-----Original Message-----
> >From: Noel Kelly [mailto:nkelly at citrusnetworks.net]
> >Sent: Saturday, January 25, 2003 6:21 PM
> >To: Thomas Nilsen; samba at lists.samba.org
> >Subject: RE: [Samba] Really bad Read performance
> >
> >
> >Hi Thomas,
> >
> >Your is a common complaint on this list and typically it
> >always seems to
> >come back to network hardware problems rather than software.
> >
> >Run ifconfig on your interface and see if there are any errors
> >listed.  If
> >you see none then i strongly recommend you swap the cable,
> >NIC, switch/hub -
> >very good chance this will take you closer to a solution than
> >fiddling with
> >Samba parameters which are best left on their defaults!
> >
> >It has happened to me a couple of times.  When the network hardware is
> >working properly you see great performance from a default
> >Samba install.
> >
> >Good luck,
> >Noel
> >
> >-----Original Message-----
> >From: news.broadpark.no [mailto:thomas.nilsen at roxar.com]
> >Sent: 23 January 2003 07:57
> >To: samba at lists.samba.org
> >Subject: [Samba] Really bad Read performance
> >
> >
> >Running Samba 2.2.7, compiled with LDAP support. I'm suffering
> >from really
> >poor read performance problems on the server. Write speed is
> >fine (after
> >adding "interface = <ip of eth0>/24"), giving about 4.4 MB/s. However,
> >reading files from the samba shares is just not usable.
> >Reading a large (34
> >MB) file from the server takes more than 3 minutes on a W2K Pro client.
> >
> >NIC on both server and client is set to 100/FD.
> >
> >I've tried changing "socket options = ...", but no settings
> >I've come accoss
> >makes any difference.
> >
> >Does anyone have any good ideas as to what I can do to fix this?
> >
> >Regards, Thomas
> >
> >
> >
> >
> >
> >
> >
> >--
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> >
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