Date: Tue, 01 Aug 2017 02:13:35 -0400 (EDT) From: Terry Kennedy <TERRY@glaver.org> To: freebsd-stable@freebsd.org Subject: Re: FreeBSD 11.1-R network slowness on Samba Message-ID: <01QHDPLW30LG006GXB@glaver.org>
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> Then I updated to 11.1-R by recompiling from svn, using the same > kernelconfig from 10.3, and now my windows client shows timeouts and > really slow connection. File copy never past kilobytes per second :( I think the issue is with the SAMBA port. I was running the samba36 port under FreeBSD 10.x and things were fine (500Mbyte/sec transfers using 10GbE). At some point the samba36 port broke due to changes in one or more of talloc/tdb/tevent and I tried various samba4x ports (I am using samba44 now, samba46 doesn't seem to work with XP-type client systems). Various directory traversal operations spike the CPU load up to 100% and clients see very bursty behavior. A lot seems to depend on the application in use - my benchmark is clrmamepro: https://mamedev.emulab.it/clrmamepro/ But even things like Windows (7) Photo Viewer will just sit at the "Loading..." message for a random length of time before displaying the next picture. I am seeing easily a 10:1 performance degradation with any of the samba4x ports. I have tried large numbers of SAMBA config tuning changes, different port build options, etc. without any success. I "solved" the problem by using an old FreeBSD 8.4 box with a 10GbE card as an NFS client to the storage server, and then exporting the NFS-mounted storage to clients with samba36. This whole chain is nearly as fast as the old samba36-on-storage-server setup. I may try resurrecting the samba36 port under FreeBSD 11.1 to see if that has the performance I used to get. I'm not sure how hard it will be to build samba36, though. Things have changed since the port was retired. Terry Kennedy http://www.glaver.org New York, NY USA
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