NFS client over udp

[Kirill Yelizarov]

--- On Fri, 2/18/11, Jeremy Chadwick <freebsd at jdc.parodius.com> wrote:

> From: Jeremy Chadwick <freebsd at jdc.parodius.com>
> Subject: Re: NFS client over udp
> To: "Kirill Yelizarov" <ykirill at yahoo.com>
> Cc: freebsd-stable at freebsd.org
> Date: Friday, February 18, 2011, 5:05 PM
> On Fri, Feb 18, 2011 at 05:27:00AM
> -0800, Kirill Yelizarov wrote:
> > I have a reproducible memory leak when using nfs
> client with an old
> > nfs server using udp protocol. I'm running rsync every
> hour from a
> > mounted nfs volume to an ufs local volume. Each time
> rsync is running
> > wired memory is increased. Wired memory is rising when
> rsync is in
> > getblk or biord state. When rsync is complete memory
> is not freed and
> > lately all memory is in active or wired state and
> system starts
> > swapping. I didn't see such behavior when client os
> was RELEASE-8.0.
> > Then i switched to STABLE-8.1 of late summer and found
> this leak so i
> > upgraded to STABLE-8.2Prerelease and got the same
> leak. vmstat -m
> > shows nothing big. 
> > 
> > client version: FreeBSD imap1.***.com 8.2-PRERELEASE
> FreeBSD
> > 8.2-PRERELEASE #0: Thu Feb 17 13:54:25 MSK 2011
> > root at imap1.****.com:/usr/obj/usr/src/sys/IMAP1 
> amd64
> > 
> > i tried different mounting options:   
>    1 -
> >
> rw,rsize=32768,wsize=32768,nfsv3,intr,mntudp,rdirplus,
> > readdirsize=65536,noauto,noexec 2 -
> rw,nfsv3,mntudp,noexec
> > 
> > i also tried setting -tso -txcsum -rxcsum for igb
> network card
> 
> Is ZFS in use on the system which sees rising wired
> memory?
No, ufs only. 
> 
> -- 
> | Jeremy Chadwick           
>                
>        jdc at parodius.com
> |
> | Parodius Networking         
>              http://www.parodius.com/ |
> | UNIX Systems Administrator       
>           Mountain View, CA, USA |
> | Making life hard for others since 1977.   
>            PGP 4BD6C0CB
> |
> 
>