From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Travis Stratman <tstratman@emacinc.com>
Cc: netdev@vger.kernel.org
Subject: Re: data received but not detected
Date: Fri, 20 Jun 2008 21:25:14 +0400 [thread overview]
Message-ID: <20080620172513.GA16673@2ka.mipt.ru> (raw)
In-Reply-To: <1213981859.9245.133.camel@localhost.localdomain>
On Fri, Jun 20, 2008 at 12:10:59PM -0500, Travis Stratman (tstratman@emacinc.com) wrote:
> Initially the application was just using a blocking recvfrom() call. I
> changed to poll() and non-blocking recvfrom (MSG_DONTWAIT) today, and
> poll() always times out when the lockup occurs. I also tried using an
Can you confirm that IPSTATS_MIB_INRECEIVES MIB does not increase when
packets are sent to the frozen machine, but userspace does not receive
it?
Please also clarify this bit again: you see packets in tcpdump running
on receiving (frozen) host, but do not see them in userspace? After this
freeze happend system recvmsg/poll calls do not respond until some
activity on NIC happend? I.e. recv/poll 'unfreeze' only when something
is received (arp, icmp reply) or after sending too?
--
Evgeniy Polyakov
next prev parent reply other threads:[~2008-06-20 17:25 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-17 22:08 data received but not detected Travis Stratman
2008-06-17 22:27 ` Stephen Hemminger
2008-06-17 22:40 ` Travis Stratman
2008-06-17 22:31 ` Ben Greear
2008-06-17 22:58 ` Travis Stratman
2008-06-17 23:45 ` Ben Greear
2008-06-19 22:53 ` Travis Stratman
2008-06-19 23:08 ` Ben Greear
2008-06-22 9:16 ` James Chapman
2008-07-07 21:56 ` Travis Stratman
2008-07-08 9:37 ` James Chapman
2008-07-15 20:46 ` Travis Stratman
2008-06-18 6:28 ` Evgeniy Polyakov
2008-06-19 23:10 ` Travis Stratman
[not found] ` <20080620060219.GA22784@2ka.mipt.ru>
2008-06-20 17:10 ` Travis Stratman
2008-06-20 17:25 ` Evgeniy Polyakov [this message]
2008-06-20 17:41 ` Travis Stratman
2008-06-20 17:54 ` Evgeniy Polyakov
2008-06-20 18:17 ` Travis Stratman
2008-06-20 18:23 ` Evgeniy Polyakov
2008-06-20 21:06 ` Travis Stratman
2008-06-21 7:12 ` Evgeniy Polyakov
2008-07-07 21:10 ` Travis Stratman
2008-07-07 21:25 ` Evgeniy Polyakov
2008-07-15 20:43 ` Travis Stratman
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