From goldberg@homebrew.cs.ubc.ca Fri Aug 30 19:02:40 1996 Received: from homebrew.cs.ubc.ca (homebrew.cs.ubc.ca [142.103.14.232]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id TAA14254 for ; Fri, 30 Aug 1996 19:02:40 -0700 (PDT) Received: (from goldberg@localhost) by homebrew.cs.ubc.ca (8.6.12/8.6.12) id TAA18350; Fri, 30 Aug 1996 19:02:37 -0700 Message-Id: <199608310202.TAA18350@homebrew.cs.ubc.ca> Date: Fri, 30 Aug 1996 19:02:37 -0700 From: goldberg@cs.ubc.ca Reply-To: goldberg@cs.ubc.ca To: FreeBSD-gnats-submit@freebsd.org Subject: kern X-Send-Pr-Version: 3.2 >Number: 1555 >Category: kern >Synopsis: nfsd send error 55 >Confidential: no >Severity: serious >Priority: medium >Responsible: wollman >State: closed >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Aug 30 19:10:01 PDT 1996 >Closed-Date: Thu Sep 26 17:11:57 PDT 1996 >Last-Modified: Thu Sep 26 17:12:44 PDT 1996 >Originator: Murray W. Goldberg >Release: FreeBSD 2.1-STABLE i386 >Organization: ------------------------------ Murray W. Goldberg, Instructor Dept. of Computer Science, University of British Columbia 2366 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z4 (604) 822-3153, goldberg@cs.ubc.ca >Environment: FreeBSD homebrew.cs.ubc.ca 2.1.0-RELEASE FreeBSD 2.1.0-RELEASE #0: Wed Aug 28 21:34:16 PDT 1996 goldberg@homebrew.cs.ubc.ca:/usr/src/sys/compile/MURRAY i386 >Description: Repeated messages of the form: Aug 22 07:27:53 homebrew /kernel: nfsd send error 55 Aug 23 07:16:49 homebrew /kernel: nfsd send error 55 Aug 23 07:17:04 homebrew /kernel: nfsd send error 55 Aug 23 07:23:25 homebrew /kernel: nfsd send error 55 Aug 24 07:11:22 homebrew /kernel: nfsd send error 55 As you can see they come is small clumps and are not that frequent. They normally come at that time of the day. The only thing I can think of unique about 7:00am is that a tape backup of an NFS mounted filesystem is finishing sometime around then (it begins at 2:00am). This problem first appeared when I updated the H/W config from a P-166, 64meg, to a Pentium-Pro 200, 128meg. Nothing else changed. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: From: Garrett Wollman To: goldberg@cs.ubc.ca Cc: FreeBSD-gnats-submit@freebsd.org Subject: kern/1555: kern Date: Mon, 2 Sep 1996 13:24:28 -0400 < Aug 22 07:27:53 homebrew /kernel: nfsd send error 55 > Aug 23 07:16:49 homebrew /kernel: nfsd send error 55 Error number 55 is ENOBUFS, ``No buffer space available''. There are a number of possible causes for this error: 1) Your machine is out of mbufs. Recompile with more. 2) Your network interface is hosed. Sometimes, if bad things happen inside a driver, output packet processing can come to a halt without the kernel knowing about it; if this happens when the queue is full, it will get stuck. (I used to see this one a lot when working on my experimental polling code.) 3) Your network interface is really busy. If the messages come only intermittently, this is the most likely cause. -GAWollman -- Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same wollman@lcs.mit.edu | O Siem / The fires of freedom Opinions not those of| Dance in the burning flame MIT, LCS, ANA, or NSA| - Susan Aglukark and Chad Irschick State-Changed-From-To: open->analyzed State-Changed-By: wosch State-Changed-When: Thu Sep 26 17:07:01 PDT 1996 State-Changed-Why: Analyzed by Garrett Responsible-Changed-From-To: freebsd-bugs->wollman Responsible-Changed-By: wosch Responsible-Changed-When: Thu Sep 26 17:07:01 PDT 1996 Responsible-Changed-Why: State-Changed-From-To: analyzed->closed State-Changed-By: wollman State-Changed-When: Thu Sep 26 17:11:57 PDT 1996 State-Changed-Why: Transient, self-correcting error. >Unformatted: Murray W. Goldberg