*Very* strange problem with samba performance

Forse

Hi everyone. I finally decided to give xfs a go so I changed gentoo-sources to xfs-sources. I have changed CFLAGS in kernel Makefile to:

Forse · Posted: Sat May 24, 2003 1:38 pm Post subject:

anyone any ideas?
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Forse · Posted: Sat May 24, 2003 1:53 pm Post subject:

i am going insane...I am recompiling samba...I dount that it will help....dammit :evil:

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handsomepete

Forse

Forse · Posted: Sat May 24, 2003 2:54 pm Post subject:

NOW i AM REALLY PISSED OFF....DAMMIT...I just booted to my old kernel and everything is fine.......dammit :twisted:

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handsomepete · Posted: Sat May 24, 2003 3:07 pm Post subject:

Forse · Posted: Sat May 24, 2003 4:50 pm Post subject:

Forse · Posted: Sat May 24, 2003 7:26 pm Post subject:

Now I get something...I've been using linux-2.4.19-gentoo-r10 and samba works fine...divx plays with no problem...but whenever I try ANY 2.4.20 series kernel I get lag performance in samba...It's not XFS-Sources problem..coz linux-2.4.20-gentoo-r5 doesn't work either :evil:

Any ideas?

Here is my info:

ARC2300 · Apprentice Joined: 30 Mar 2003 Posts: 267

Couple of ideas.

If you're running a server, why don't you try the wolk-sources? They have XFS support in them.

Also, try re-emerging Samba under the new kernel. Since the compiles quite possibly use the kernel headers, and each kernel is slightly different (dunno about the headers) that may be a possible solution also.

I use wolk-sources on my K6-III 600MHz for MP3 and file sharing, and I had 3 computers all listening to high bitrate MP3's and I had one computer copy a 27MB file over the network. None of the MP3's skipped once, and the file transfer was maybe slightly slower than without MP3's playing.

I whole-heartedly suggest trying the wolk-sources.

They're quick, and they have server/desktop tweaks built in, depending on which platform you're using them on.

Forse · Posted: Sat May 24, 2003 8:22 pm Post subject:

Forse · Posted: Sat May 24, 2003 8:26 pm Post subject:

Why is it masked?

ARC2300 · Apprentice Joined: 30 Mar 2003 Posts: 267

Right now on my server I'm using reiserFS, but when I get a new job and some more cash, I'm going to be putting a much larger HDD in and possibly use XFS (as my g/f wants to try her hand at video capture and editing, XFS is best with large files).

And the really cool thing is that the drive I'm running all this off of is a U8 series Seagate, ATA/66 with only a 512KB cache.

I really wasn't expecting half of the performance I'm getting out of it. I've never had MP3's or any file transfers stall at all like I did on Windows.

Right now, actually, I'm transfering about 3-4 GB of DivX files to the server and listening to MP3's just fine. I feel that's a feat in and of itself with a server only having 128MB of RAM and a slow HDD.

ARC2300 · Apprentice Joined: 30 Mar 2003 Posts: 267

Forse · Posted: Sat May 24, 2003 11:18 pm Post subject:

Ok I got wolk-sources up and running....and after booting to it I did remerge samba...but no dice....dammit...I am so pissed off :evil:

...I am...ok...ok...I need to come down...Any...and I repeat any...advice is welcomed

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Forse · Posted: Sun May 25, 2003 12:14 am Post subject:

I have remerged samba with this flags:

ARC2300 · Apprentice Joined: 30 Mar 2003 Posts: 267

Couple of things that may help.

A) Post your kernel .config, which can be found in '/usr/src/linux'
B) Post your smb.conf file

Other than that, I'm out of ideas. :-?

BTW, these are the wolk 4.0 sources. . .by reading that note from SourceForge, seems they only got split for the 4.1 version.

And for you CFLAGS, since you have a PIII, put '-mmmx -msse -mfpmath=sse'. Since your processor supports SSE, you may notice a little but of a boost in some things.

Forse · Posted: Sun May 25, 2003 12:31 am Post subject:

DAmm....here are configs you've asked:

http://www.goldenrain.net/Temp/config.txt
http://www.goldenrain.net/Temp/smb.conf

thnx for help
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ARC2300 · Apprentice Joined: 30 Mar 2003 Posts: 267

Couple of things you can do to speed things up. . .

Does your server have a Windows HDD in it?? If no, get rid of all the other filesystems other than the ones you need (ext2 & 3, reiserFS, XFS, Proc, devFS (take out DEVPTS_FS support), RAMFS, TMPFS). That will save you some space simply by not having used modules in there that aren't needed.

Compile in NFS support and SMB support. Not as modules, but compile them in that way the kernel doesn't load/unload the module all the time (as I understand, if a module isn't used for an amount of time or the kernel needs the RAM, it will unload a module). Uncheck all the other filesystem under network FS.

Under NLS, depending on where you live, you'll have to code something in there for SMB support.

Definetly disable everything under kernel hacking, as that slows things down because the kernel tries to make itself crash if a discrepancy occurs (from how I understand it).

Other than that, I didn't really see much else wrong.

But I will say, that if you don't need it, don't compile it in at all. If you use it once in a while, compile it in as a module. If you think you might use it more than, say, once a day, compile it into the kernel.

Forse · Posted: Sun May 25, 2003 5:24 pm Post subject:

ARC2300 · Apprentice Joined: 30 Mar 2003 Posts: 267

Hey. . .this ain't M$. . .we don't charge for tech support help.

We're all here to better ourselves and anyone else willing to try. Or at least I am.

I haven't checked through your smb.conf, but I'll check that out in a bit. I had to go home today to change my spark plug wires on my '92 Cutlass.

Forse · Posted: Mon May 26, 2003 2:51 pm Post subject:

I noticed this in my logs:

ARC2300 · Apprentice Joined: 30 Mar 2003 Posts: 267

In my kernel, under Character Devices/Watchdog cards, I have /dev/nvram Support checked and Enhanced Real Time Clock Support checked also.

And another I meant to ask. . .what NIC do you have?? I totally forgot looking through your kernel config until you posted that, but you have about 4 different NIC drivers included. :-?

That may be causing a problem if the wrong one gets loaded.

http://www.cruea.net/config

Check that over. . .that's the .config for my server running wolk rc7's (need to emerge the rc8's, though).

And that .config isn't what I use right now. . .the only difference being in the one listed about I put the gresecurity in it, and i haven't tested it yet. When my server absolutely MUST go down, then I'll recompile my kernel and give that a shot.

Forse · Posted: Mon May 26, 2003 3:51 pm Post subject:

ARC2300 · Apprentice Joined: 30 Mar 2003 Posts: 267

Really stupid, but what did the 2.4.19 sources say were the card's drivers??

The reason I ask is that a few times I've switched versions (the most memorable was 2.2.16 to 2.4.20), and the kernel detected things, but some things were detected wrong, or the wrong driver simply got assigned. You might try making the NIC drivers modules, then load them manually with insmod, and see what that does.

For example, your card with the RealTek may use the 8139 PCI instead of the 8139C driver, which could still work, but make the card act haywire. I use a D-Link DFE-530TX+, and it uses the PCI drivers, not the C+ drivers.

And just out of curiousity, do both NICs use Samba, or is it just one??? If it's both, unhook one, see what flies. If it's only one, try hooking the other up, see if it works. If one NIC does, the other doesn't, then that could quite possibly be a defunct driver.