[Samba] Ext3fs/ReiserFS Performance Enhancing

[Rashkae]

Have you tried using a different switch, or connecting through a hub
temporarily to test it?

Also, what NIC are you using and what module are yo loading for that NIC?

Also, what are the results if you test your hard drive speed on the Linux
box? (As root, run 'hdparm -tT /dev/hda', substitute hda for whatever your
hard drive actually is.)  Also, how fast can you copy a 10 or 20 MB file
on the same system. (without copying over the network).

Can use use ftp to transfer the files and see if you get the same results?

On Fri, 21 Mar 2003, Robert Adkins II wrote:

Here are the results of mii-tool from both servers...

"Spare" Server:

  eth0: negotiated 100baseTx-FD, link ok
  product info: vendor 00:10:18, model 23 rev 7
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
flow-control
  link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

Main Server

  eth0: negotiated 100baseTx-FD, link ok
  product info: vendor 00:10:5a, model 0 rev 0
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
flow-control
  link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

	If I am reading this correctly, then it appears that they are
setup to run at their very best.

	Using mii-tool, I have tested the "Spare" server by forcing
several different speed settings from 100baseTX-FD/HD to 10baseT-FD and
HD. I am still experiencing incredible slow downs when copying data to
the server and much faster copies from the server.

	When moving down to the 10baseT speeds the copies to the server
slow down a little more, but not by much. They slow down about the same
percentage as the copies from the server do when dropping down to
10baseT speeds. (Which is to say it isn't extremely noticeable.)

Regards,
Robert Adkins II
IT Manager/Buyer
Impel Industries, Inc.
586-254-5800


-----Original Message-----
From: David Brodbeck [mailto:DavidB at mail.interclean.com]
Sent: Friday, March 21, 2003 11:18 AM
To: 'Robert Adkins II'
Subject: RE: [Samba] Ext3fs/ReiserFS Performance Enhancing

If you're running Linux, mii-tool can be helpful.  I've mostly run into
this problem with older switches that don't do auto-negotiation
properly.  Check what the switch is expecting and make sure the ethernet
card's settings agree.  Sometimes it's best, at least for testing, to
force both ends manually into a particular duplex setting instead of
relying on auto-negotiation.  (If you're using a hub, you should be in
half-duplex mode, period.)

> -----Original Message-----
> From: Robert Adkins II [mailto:radkins at impelind.com]
> Sent: Friday, March 21, 2003 11:26 AM
> To: 'David Brodbeck'; larry at ptcoupling.com; 'Rashkae'
> Cc: samba at lists.samba.org
> Subject: RE: [Samba] Ext3fs/ReiserFS Performance Enhancing
>
>
> Well,
>
> 	This suggestion makes perfect sense. I am looking into this, I
have
> found some interesting information regarding this on Google and hope
> to have this figured out soon.
>
> 	Thanks for the assistance.
>
> Regards,
> Robert Adkins II
> IT Manager/Buyer
> Impel Industries, Inc.
> 586-254-5800
>
>
> -----Original Message-----
> From: David Brodbeck [mailto:DavidB at mail.interclean.com]
> Sent: Friday, March 21, 2003 11:09 AM
> To: 'larry at ptcoupling.com'; Rashkae; Robert Adkins II
> Cc: samba at lists.samba.org
> Subject: RE: [Samba] Ext3fs/ReiserFS Performance Enhancing
>
>
>
> > -----Original Message-----
> > From: Larry McElderry [mailto:larry at ptcoupling.com]
> > Sent: Friday, March 21, 2003 10:45 AM
> > To: Rashkae; Robert Adkins II
> > Cc: samba at lists.samba.org
> > Subject: RE: [Samba] Ext3fs/ReiserFS Performance Enhancing
> >
> >
> > I tend to agree.  Perhaps a duplex mismatch between
> > hub/switch and NIC?
>
> Just to add: A duplex mismatch can cause late collisions that
> will *not*
> always be reported as errors in the Ethernet stats.  A common
> symptom is
> that pings or small transfers go well, but large ones crawl
> or grind to
> a
> halt.
>
>

-----Original Message-----
From: Gareth Davies [mailto:gdavies at willowbrook.co.uk]
Sent: Friday, March 21, 2003 11:04 AM
To: larry at ptcoupling.com; Rashkae; Robert Adkins II
Cc: samba at lists.samba.org
Subject: Re: [Samba] Ext3fs/ReiserFS Performance Enhancing

----- Original Message -----
From: "Larry McElderry" <larry at ptcoupling.com>
To: "Rashkae" <rashkae at tigershaunt.com>; "Robert Adkins II"
<radkins at impelind.com>
Cc: <samba at lists.samba.org>
Sent: Friday, March 21, 2003 3:45 PM
Subject: RE: [Samba] Ext3fs/ReiserFS Performance Enhancing


> I tend to agree.  Perhaps a duplex mismatch between hub/switch and
NIC?
>
> How long does it take to copy a 5MB file from one local drive to the
second local drive (not involving the network)?
>

I also concur.

I just tested a 16mb file copying to a Winbind authenticated SAMBA share
using Ext3fs and it took around 3-4 seconds.

Copying between 2 SAMBA shares on the same machine took about 12
seconds.

Copying from the share back to the Win2k machine took 4 seconds.

Gareth Davies
Willowbrook I.T.
Ext. 235



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