[Samba] Large Files vs. Speed

[Louis van Belle]

have you installed hdparm

if not, install it.
the enter this

hdparm -tT /dev/hda

for the first drive.

this is my output. 
im running Raid 1 on Onboard HPT372 controller with 
the driver from Highpoint. ( kernel 2.4.27-10 ) 

mailgate:/etc/squid# hdparm -tT /dev/sda
/dev/sda:
 Timing cached reads:   2976 MB in  2.00 seconds = 1488.00 MB/sec
 Timing buffered disk reads:  158 MB in  3.03 seconds =  52.15 MB/sec
 
hdparm -c1 -d1 -m16 /dev/hda
is a pretty safe option, and can give your system lots of extra speed.

Louis


>-----Oorspronkelijk bericht-----
>Van: samba-bounces+louis=van-belle.nl at lists.samba.org 
>[mailto:samba-bounces+louis=van-belle.nl at lists.samba.org] 
>Namens Alex February
>Verzonden: dinsdag 19 juli 2005 13:17
>Aan: Patrick blitz; samba at lists.samba.org
>Onderwerp: RE: [Samba] Large Files vs. Speed
>
>Hi Patrick, 
>
>I've had similar problems to yours as far as speed is 
>concerned, and while I haven't been able to completely resolve 
>the issue, I have gotten better performance than I had before. 
>Unfortunately, tweaking Samba to your speed needs is a bit of 
>a black art, I can however point you to some info to help.
>
>The first FM to look at is this one:
>http://www.dd.iij4u.or.jp/~okuyamak/Documents/tuning.english.html
>
>The second thing to try is to ensure that under socket options 
>in smb.conf you have the following:
>
>socket options = SO_RCVBUF=8760 SO_SNDBUF=8760 TCP_NODELAY 
>IPTOS_LOWDELAY
>
>The SO_RCVBUF and the SO_SNDBUF will have to be tweaked 
>depending on your network.
>
>
>Hope this helps.
>
>Good Luck!
>Alex 
>
>-----Original Message-----
>From: samba-bounces+afebruary=supplychainconnect.com at lists.samba.org
>[mailto:samba-bounces+afebruary=supplychainconnect.com at lists.sa
>mba.org]O
>n Behalf Of Patrick blitz
>Sent: 19 July 2005 10:45
>To: samba at lists.samba.org
>Subject: [Samba] Large Files vs. Speed
>
>
>Hey Lists.
>
>i'm pretty sure my Problem is pretty common, so please point 
>me to the FM, if there is any (i couldn't find it searching 
>the list archives and  google)
>here's the deal:
>
>i've a Linux Box as a Server for a small VideoEditing 3D 
>Company. The Server and Workstations are connected over 1GBit 
>Ethernet. The Linuxserver runs Suse (9.2 if i'm not mistaken). 
>The Shares in question are on two IDE Disks.
>
>Problem:
>The overall Speed of the System, esp. under a bit more Load, 
>is way below the Windows System that was on the box before. 
>Writting Two Files with about 300 MB each takes up to 2 
>Minutes each (which is just too long for 1Gbit). 
>
>I know that a big part of this are using IDE - Disks, but 
>still, why would WinXP be faster writting those than Linux?
>
>Any turns i could turn to make samba a bit faster saving the files?
>
>All Parameters in smb.conf are in Default.
>
>Thanks a bunch,
>
>Patrick
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