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Servers & Networking Discuss any Fedora server problems and Networking issues such as dhcp, IP numbers, wlan, modems, etc.

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  #1  
Old 4th August 2011, 11:43 AM
tsorvoja Offline
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Join Date: Jul 2004
Location: Finland
Age: 33
Posts: 380
windows_7chrome
F14 samba server with slow write speed

Hi,
I had a F14 samba server working flawlessly now for a quite time. Unexpectedly about a month ago the write speed slowed down around 64kbit/s and that's really slow. I haven't changed any configs, only updated the server. Anybody having same kind of issues?

I've troubleshooted this from many angles:
-It is not a network issue because sftp writes are good.
-It is not a RAID1 issue because write speed from another directory (locally) are good.
So basically samba is the only thing left.

Here's example from smb.conf:
[MyShare]
comment = My share
path = /mnt/RAID_share
writeable = yes
browseable = yes
writelist = +smbuser

Here's a snip from logs today:
[2011/08/04 09:04:27.509273, 1] smbd/server.c:267(remove_child_pid)
Scheduled cleanup of brl and lock database after unclean shutdown
[2011/08/04 09:04:47.526336, 1] smbd/server.c:240(cleanup_timeout_fn)
Cleaning up brl and lock database after unclean shutdown
[2011/08/04 09:17:57.634660, 1] smbd/server.c:267(remove_child_pid)
Scheduled cleanup of brl and lock database after unclean shutdown
[2011/08/04 09:18:17.635196, 1] smbd/server.c:240(cleanup_timeout_fn)
Cleaning up brl and lock database after unclean shutdown
[2011/08/04 11:39:57.956380, 1] smbd/server.c:267(remove_child_pid)
Scheduled cleanup of brl and lock database after unclean shutdown
[2011/08/04 11:40:17.976442, 1] smbd/server.c:240(cleanup_timeout_fn)
Cleaning up brl and lock database after unclean shutdown
[2011/08/04 13:15:13, 0] smbd/server.c:1119(main)
smbd version 3.5.4-68.el6_0.2 started.
Copyright Andrew Tridgell and the Samba Team 1992-2010
[2011/08/04 13:15:13.738319, 0] printing/print_cups.c:108(cups_connect)
Unable to connect to CUPS server localhost:631 - Connection refused
[2011/08/04 13:15:13.748205, 0] printing/print_cups.c:108(cups_connect)
Unable to connect to CUPS server localhost:631 - Connection refused
[2011/08/04 13:15:13.777926, 0] smbd/server.c:500(smbd_open_one_socket)
smbd_open_once_socket: open_socket_in: Address already in use
[2011/08/04 13:26:57, 0] smbd/server.c:1119(main)
smbd version 3.5.4-68.el6_0.2 started.
Copyright Andrew Tridgell and the Samba Team 1992-2010
[2011/08/04 13:26:57.316812, 0] printing/print_cups.c:108(cups_connect)
Unable to connect to CUPS server localhost:631 - Connection refused
[2011/08/04 13:26:57.326615, 0] printing/print_cups.c:108(cups_connect)
Unable to connect to CUPS server localhost:631 - Connection refused
[2011/08/04 13:26:57.355801, 0] smbd/server.c:500(smbd_open_one_socket)
smbd_open_once_socket: open_socket_in: Address already in use
[2011/08/04 13:26:57.357123, 0] smbd/server.c:500(smbd_open_one_socket)
smbd_open_once_socket: open_socket_in: Address already in use

There's a restart that is not software related. It was me...

-Br, Timo
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  #2  
Old 4th August 2011, 12:31 PM
flyingfsck Offline
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Join Date: Aug 2010
Location: Al Ain, UAE
Posts: 1,059
linuxfirefox
Re: F14 samba server with slow write speed

In my experience, these slowdowns were caused by an authentication problem of sorts, causing Samba to send multiple queries and wait for time-outs before doing anything.

Run Wireshark and see what is happening.
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  #3  
Old 5th August 2011, 06:00 AM
tsorvoja Offline
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Join Date: Jul 2004
Location: Finland
Age: 33
Posts: 380
windows_7chrome
Re: F14 samba server with slow write speed

Well, I'll check wireshark if there something fishy over there. Maybe I'll post the results here too...
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  #4  
Old 18th August 2011, 03:11 PM
tsorvoja Offline
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Join Date: Jul 2004
Location: Finland
Age: 33
Posts: 380
linuxchrome
Re: F14 samba server with slow write speed

There's pretty strong indications that this is a hw issue. Thanks anyways! Closing thread....
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