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Date:      Fri, 16 Nov 2007 07:55:22 -0800
From:      Alfred Perlstein <alfred@freebsd.org>
To:        Joerg Lehners <Joerg.Lehners@Informatik.Uni-Oldenburg.DE>
Cc:        freebsd-bugs@FreeBSD.org, kmacy@FreeBSD.org
Subject:   Re: kern/107109: [nfs] Netbeans/Eclipse/Java provoke deadlocks when used with NFS
Message-ID:  <20071116155522.GB8950@elvis.mu.org>
In-Reply-To: <Pine.BSF.4.64.0711161555160.59022@gneedle.Informatik.Uni-Oldenburg.DE>
References:  <200711160223.lAG2N7I9070055@freefall.freebsd.org> <Pine.BSF.4.64.0711161555160.59022@gneedle.Informatik.Uni-Oldenburg.DE>

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* Joerg Lehners <Joerg.Lehners@Informatik.Uni-Oldenburg.DE> [071116 07:00] wrote:
> On Fri, 16 Nov 2007, kmacy@FreeBSD.org wrote:
> >Date: Fri, 16 Nov 2007 02:23:07 GMT
> >From: kmacy@FreeBSD.org
> >To: Joerg.Lehners@Informatik.Uni-Oldenburg.DE, kmacy@FreeBSD.org,
> >    freebsd-bugs@FreeBSD.org, alfred@FreeBSD.org
> >Subject: Re: kern/107109: [nfs] Netbeans/Eclipse/Java provoke deadlocks 
> >when
> >    used with NFS
> >
> >Synopsis: [nfs] Netbeans/Eclipse/Java provoke deadlocks when used with NFS
> >
> >[...]
> 
> I just tested against
> 
> FreeBSD testido2 6.3-PRERELEASE FreeBSD 6.3-PRERELEASE #0: Fri Nov 16 
> 14:54:31 MET 2007     root@testido2:/usr/src/sys/i386/compile/JL-TESTIDO2  
> i386
> 
> and was NOT able to reproduce the problem. Whereas with
> 
> FreeBSD tende 6.2-STABLE FreeBSD 6.2-STABLE #0: Mon Jun 11 16:30:26 MEST 
> 2007     root@bodensee:/usr/src/sys/i386/compile/JL-FS-neu-SCSI  i386
> 
> the deadlock showed up after milliseconds.
> So some of the numerous changes made the problem go way.
> 
> Do you need a more specific description of the change? It might
> take some time to narrow it down.

This is the change Julian and I worked out for kse where
we no longer call "thread_single" during fork(2) of threaded
processes.

-- 
- Alfred Perlstein



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