Date: Fri, 01 Oct 1999 09:45:49 +0100 From: Alan Judge <Alan.Judge@indigo.ie> To: freebsd-isp@freebsd.org Subject: Re: NetApp NFS & FreeBSD Message-ID: <19991001084551.7DAC615208@hub.freebsd.org> In-Reply-To: Message from Jeff Lynch dated Thursday at 16:31.
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Jeff> Wow, 80Mbps (assuming b=bit, B=byte convention). Yep. I did a real quick test with a perl script creating 50000 different 20K files. Results below, for a speed of around 3700KB/s or 29Mb/s, so a good deal slow. But NFS latency issues may be involved and using multiple processes could be faster. perl ~judgea/f.pl 2.69s user 22.45s system 9% cpu 4:25.60 total Watching with netstat -i, I/O drops off within a few seconds of the end of the run, so there is little caching happening (on the FreeBSD side). I'm not sure exactly what you wanted to test with caching, but I tried writing 50000 different things to the same file, and got: perl ~judgea/f2.pl 1.77s user 11.78s system 6% cpu 3:24.06 total (or 4800KB/s, 38Mb/s) The difference is probably mostly directory and path handling stuff and different caching behaviour on the Netapp, I'd guess. These are all write speed tests. I don't have time today to write a better benchmark. If you or anyone wants to send me a script, I can probably run it. -- Alan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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