From: kuznet@ms2.inr.ac.ru
To: trond.myklebust@fys.uio.no
Cc: b.lammering@science-computing.de, linux-kernel@vger.kernel.org
Subject: Re: more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5 client
Date: Mon, 19 Nov 2001 22:52:28 +0300 (MSK) [thread overview]
Message-ID: <200111191952.WAA21731@ms2.inr.ac.ru> (raw)
In-Reply-To: <15353.23941.858943.218040@charged.uio.no> from "Trond Myklebust" at Nov 19, 1 08:29:09 pm
Hello!
> The problem is that when EAGAIN is returned by sendmsg,
BTW this is already problem. UDP should not hit EAGAIN case, if the
predicate is right.
> requests), and then reactivate it as soon as sock_wspace() reports
> that the available free buffer space is large enough to fit the next
> request.
sock_wspace() is OK. sock_writable() is bad.
> released and that sock_wspace() does indeed reflect more or less the
> maximum message size for which there is free buffer space (I allow a
> couple of kilobytes for extra padding)
Do not economize. :-) The longer you wait the less you scheduled.
We used to wait for half of sndbuf to be freed.
> then the current UDP code
> should be correct and race-free.
BTW recently I was reported it deadlocks on some spinlock...
Alexey
next prev parent reply other threads:[~2001-11-19 19:52 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <15349.39320.876188.274548@charged.uio.no>
2001-11-15 21:29 ` nfs problem: hp-server --- linux 2.4.13 client, ooops Birger Lammering
2001-11-15 23:58 ` Trond Myklebust
2001-11-16 11:45 ` nfs problem: hp|aix-server --- linux 2.4.15pre5 client Trond Myklebust
2001-11-16 12:01 ` Miquel van Smoorenburg
2001-11-16 12:24 ` Trond Myklebust
2001-11-16 11:24 ` Birger Lammering
2001-11-16 13:19 ` nfs problem: aix-server " Birger Lammering
2001-11-19 10:20 ` IPV4 socket layer, was: " Birger Lammering
2001-11-19 11:16 ` Alan Cox
2001-11-19 18:22 ` more tcpdumpinfo for nfs3 " Trond Myklebust
2001-11-19 18:49 ` kuznet
2001-11-19 18:55 ` Trond Myklebust
2001-11-19 19:09 ` kuznet
2001-11-19 19:29 ` Trond Myklebust
2001-11-19 19:52 ` kuznet [this message]
2001-11-19 20:38 ` Trond Myklebust
2001-11-19 21:17 ` Trond Myklebust
2001-11-20 17:42 ` kuznet
2001-11-20 19:39 ` Trond Myklebust
2001-11-20 19:45 ` kuznet
2001-11-20 20:29 ` Trond Myklebust
2001-11-21 10:07 ` Trond Myklebust
2001-11-21 17:05 ` kuznet
2001-11-20 20:05 ` Trond Myklebust
2001-11-20 20:18 ` David S. Miller
2001-11-20 20:28 ` more tcpdumpinfo for nfs3 problem: aix-server --- linux kuznet
2001-11-20 17:41 ` more tcpdumpinfo for nfs3 problem: aix-server --- linux 2.4.15pre5 client kuznet
2001-11-19 16:37 ` Birger Lammering
2001-11-20 9:26 ` Birger Lammering
2001-11-21 19:09 Manfred Spraul
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