Date: Wed, 09 Nov 2005 13:48:33 +1100 From: Michael Vince <mv@roq.com> To: Joao Barros <joao.barros@gmail.com> Cc: freebsd-performance@freebsd.org Subject: Re: Poor Samba throughput on 6.0 Message-ID: <43716381.4010601@roq.com> In-Reply-To: <70e8236f0511050457s5ce6d8batf805fbc9edd91360@mail.gmail.com> References: <70e8236f0511050457s5ce6d8batf805fbc9edd91360@mail.gmail.com>
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Joao Barros wrote: >Hi, > >Last month I started a thread[1] on current@ about this, but I guess I >should have done it here, my apologies for that. > >After my initial post I did some more testing and I'm going to start >clean here with all my findings :) > >I started with Samba 3 installed on a PIII 733MHz with fxp (82559) and >a RAID5 consisting of 4 drives connected to an amr. >Performance reading or writing was poor, around 5.5MB/s measured on >two Windows clients and iostat never topped that by much. >cpu was mbufs were available and there were no IRQs shared. >To dismiss the amr out of the question I tried with a local IDE >attached yielding the same results. >I then tested the same on a machine I have at work, an HP Proliant >server, Pentium 4 3.06GHz, used SMP instead of GENERIC to use HTT. >I could get 8MB/s with 2 read or write simultaneous operations. With 1 >operation I still can only get 6MB/s >This machine has 1GB ram and after copying a 700MB file to it it was all cached. >A copy to dev/null took 1 second. >A copy via samba took the same time as if there was no cache for it. >iostat always showed 0.0 during the operation so that pretty much >takes disks, controllers, IO out of the picture. > >Both machines have cpu, IO and mbufs to spare and they still can't use >them. Why? > > >[1] http://lists.freebsd.org/pipermail/freebsd-current/2005-October/057116.html > >-- >Joao Barros >_______________________________________________ > > Sometime in the near future I will be building a Samba3 server and I plan to get everything I can get out of it, I expect to uncover a lot of needed tweaks to get it going fast. My guess would be to you try at least turning on polling, also if its only 100mbit Ethernet/switches you got then I guess you cant expect much either. Mike
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