[Bug 193984] New: SMBFS transfer very slow and sometimes hangs indefinitely

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Sun Sep 28 06:47:32 UTC 2014


            Bug ID: 193984
           Summary: SMBFS transfer very slow and sometimes hangs
           Product: Base System
           Version: 10.0-RELEASE
          Hardware: i386
                OS: Any
            Status: Needs Triage
          Severity: Affects Many People
          Priority: ---
         Component: misc
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: jean.m.cyr at gmail.com

Server is MS Server 2012, clients are FreeBSD Web 10.0-RELEASE-p9 FreeBSD

Copy of large file from server does not exceed 1Mbps over wired GigE. Similar
FreeBSD 8 and Linux boxes achieve 20-30Mbps under same conditions. All NICs are
Intel and have auto-negotiated to GigE.

Hanging FreeBSD 10 permanently (requires power down, reboot command hangs) can
be reproduced as follows:

Copy three large folders recursively in parallel. ie:

cp -R /mnt/SRVR2012/a ~/a &
cp -R /mnt/SRVR2012/b ~/b &
cp -R /mnt/SRVR2012/c ~/c &

Mount done using standard mount_smbfs command.

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