Date: Thu, 7 Nov 2013 23:00:03 GMT From: Oliver Pinter <oliver.pntr@gmail.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/183753: Regression since r255138: network is slow, kernel: failed to create new mbuf Message-ID: <201311072300.rA7N03IL044441@freefall.freebsd.org>
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The following reply was made to PR kern/183753; it has been noted by GNATS. From: Oliver Pinter <oliver.pntr@gmail.com> To: Ralf Wenk <iz-rpi03@hs-karlsruhe.de> Cc: freebsd-gnats-submit@freebsd.org Subject: Re: kern/183753: Regression since r255138: network is slow, kernel: failed to create new mbuf Date: Thu, 7 Nov 2013 23:51:56 +0100 On 11/7/13, Ralf Wenk <iz-rpi03@hs-karlsruhe.de> wrote: > >>Number: 183753 >>Category: kern >>Synopsis: Regression since r255138: network is slow, kernel: failed >> to create new mbuf >>Confidential: no >>Severity: non-critical >>Priority: low >>Responsible: freebsd-bugs >>State: open >>Quarter: >>Keywords: >>Date-Required: >>Class: sw-bug >>Submitter-Id: current-users >>Arrival-Date: Thu Nov 07 15:20:00 UTC 2013 >>Closed-Date: >>Last-Modified: >>Originator: Ralf Wenk >>Release: FreeBSD 10.0-CURRENT arm >>Organization: > Hochschule Karlsruhe, University of Applied Sciences >>Environment: > FreeBSD raspberry-pi 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r255138: Wed Nov > 6 08:42:26 CET 2013 > root@IZ-FreeBSD1:/usr/obj/arm.armv6/root/rpi/255138/sys/RPI-Bsc arm >>Description: > While rsync(1)-ing an 1 GB file the RPi gets almost unresponsible after a > while and on the serial console there are lots of > > smsc0: warning: failed to create new mbuf > > kernel messages. Occasionaly dotted with the > > [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached > > kernel message. > > rsync shows a transfer speed of 27.40kB/s (over DSL) even if the files are > already in sync and only the timestamps differ. > > Increasing the value of kern.ipc.nmbclusters by the factor of 2 just > delayed > the moment the problem happens. > > The first release which shows this is r25518. r255166 and older do not. > > rsync shows a transfer speed of 535.46kB/s (over DSL) on r255166 and older > releases. >>How-To-Repeat: > Use a 1GB file as transfer file. > If already transfered touch(1) transfer file at the source host. > > rsync -trv --modify-window=1 --compress --progress --stats --inplace > --delete transfer_file user@target.host:/path/to/ > > Await problem around 10% of the file is transfered. >>Fix: > Undo r255138. > >>Release-Note: >>Audit-Trail: >>Unformatted: > _______________________________________________ > freebsd-bugs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-bugs > To unsubscribe, send any mail to "freebsd-bugs-unsubscribe@freebsd.org" > possible workaround: sysctl kern.eventtimer.idletick=1
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