Re: [Xen-users] xen network and samba

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

jacek burghardt wrote:
> I have guest running under xen that has  raid controler that gives me
>  Timing cached reads:   6754 MB in  1.99 seconds = 3390.99 MB/sec
>  Timing buffered disk reads: 536 MB in  3.00 seconds = 178.49 MB/sec
> Samba 3.6.6 gives me low performance I get around 40 mb/s over 
> gigabit and 10 over wireless N.
> Is there a way to configure domu to have 10 gigabit interface and 
> improve samba performance
Firstly, your DomU is limited to the speed of the host NICs - any 
reference to 100Mbps NICs is just a case what's emulated, not an 
indication that the speed is restricted to 100Mbps.
Note: I's some time since I've used Samba, so this may be out of date ...
Samba has many config options which can affect throughput. Some are 
set "conservatively safe but slow" which is one reason it sometime 
benchmarks badly against a Windows server. I'd suggest looking for 
resources related to performance tuning Samba.
Also, DomU network access relies on a thread in Dom0. It's well known 
that this can be a significant performance bottleneck.
--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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