Performance Issues on 6.3

[Natham]

On Wed, Feb 27, 2008 at 1:16 PM, Mel
<fbsd.questions at rachie.is-a-geek.net> wrote:
>
> On Wednesday 27 February 2008 18:56:15 Natham wrote:
>  > On Wed, Feb 27, 2008 at 12:26 PM, Lyle Miller <lm101ml at bellsouth.net> wrote:
>  > > Natham wrote:
>  > >  > Hi i have a server with four disk atached, 2 raid 0 and 2 raid 1. Im
>  > >  > getting a low performance on file trasfers  over network to windows
>  > >  > clients  i get only about 30MB/s. Looking at gstat i got both disk are
>  > >  > trasfering 15000kBps each over a gigabit connection(client and
>  > >  > server). How can improve performance for my data server?
>  > >
>  > >  i dont know if this will eventually help in your case .....
>  > >
>  > >  ... but ....
>  > >
>  > >  i noticed a link on www.freebsd.org under 'in the media'
>  > >
>  > >  look for 'squeeze your gigabit nic for top performance' dated 2007-10.
>  > >
>  > >  gl
>  >
>  > Yes, i did everything it recomends. Tahnk you
>
>  How to rule out the raid:
>  1) create a memory disk, in your case I'd go with 256MB if you can spare the
>  memory.
>  2) Put a file on it, size ~210MB (7 * 30MB/s, should give ample time to let
>  the transferrate go up)
>  3) share it via samba
>  4) Download it through one of the clients
>
>  If the transfer rate is still low, it's not the raid. Install a bandwidth
>  monitor then (net/bmon for example) and see if the traffic is actually higher
>  then the 30MB/s, eating the rest of your bandwidth, investigate samba issues,
>  switches, clients (are they really configured Gbit?).
>
>  If the transfer rate is much higher, you're pretty safe to assume it's a disk
>  issue.
>
>  Manpage to read:
>  mdconfig(8) - choose swap backed btw.
>  --
>  Mel
>
>  Problem with today's modular software: they start with the modules
>     and never get to the software part.
>

Hi:

I made the test today and i got awesome results. One of my harddrives
(RAID 1 ) goes offline. I made the test with only 1 disk trasfering a
1.7GB file trought FTP and samba. Samba got about 24mb/s and ftp got
about 45mb/s from the single disk both. Samba takes the twice the time
than ftp, it is my bottleneck anyone has any patch/suggestion to improve
the samba performance on freebsd?

Thanks :)

-- 
mmm, interesante.....