Date: Mon, 25 Feb 2008 16:38:39 +0100 From: Nenad Mihajlovic <nenad@venturis.hu> To: freebsd-questions@freebsd.org Subject: FreeBSD SAMBA file server performance - strange behaviour Message-ID: <20080225163839.0ynsnyqygwgs84cg@venturis.hu>
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Hi all, Recently I have received the reuest from the colleague to create the =20 homebrewn NAS for his small office, so I started checking the possible =20 options, and having good, stable and long relationship with FreeBSD =20 I've settled again for it. Machine is not something special, Pentium D with 1G RAM and single =20 SATA150 disk, 3Com 1G server card in the PCI slot, connected to the =20 desktop though 1Gbps unmanaged switch. If needed I'll provide the full config and setup information. After installing the bare FreeBSD 7.0RC3 and Samba 3.x.xx - whichewer =20 was included in the packages - I wanted to have the job done quickly, =20 the machine appeared on the network and everyone seemed to be happy =20 and live happily everafter. Until dear friend of mine started using the machine to do the actual =20 work - basic editing of the wedding videos. When trying to upload the single file to file server, he was getting =20 the varying speed of 5-13 MBps, from his machine to file server - =20 which is unacceptably low for any kind of transfer speed. Interestingly enough, when he tried to copy _TWO_ files to file =20 server, the transfer speed vould jump to the 25-27 MB/sec and keep =20 permanent, without much fluctuation. After I tried to copy the files from one directory to another, iostat =20 has shown me the speed in excess of 29 MB/sec while copying the files =20 between two directories on the same server, so the disk access should =20 not be the problem. On the other hand, i experienced that when i try PING on the File =20 server's IP address from the fileserver, i get performance increase in =20 the transfer speed - the bigger the traffic i generate, the better the =20 results, which max out at 25-27 MB/sec with flood ping. Has anyone else experienced any similar behaviour? Regards, Nenad
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