Date: Fri, 12 Jun 1998 14:27:30 -0600 (MDT) From: Doug Russell <drussell@saturn-tech.com> To: Robert Du Gaue <rdugaue@calweb.com> Cc: "Viren R. Shah" <viren@rstcorp.com>, stable@FreeBSD.ORG Subject: Re: NFS server performance (was: NFS performance benchmarks?) Message-ID: <Pine.BSF.3.95.980612135740.14369B-100000@hobbes.saturn-tech.com> In-Reply-To: <Pine.BSF.3.95q.980611163652.7621A-100000@web2.calweb.com>
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On Thu, 11 Jun 1998, Robert Du Gaue wrote:
> > Writing the 20 Megabyte file, 'iozone.tmp'...46.320312 seconds
> > Reading the file...25.390625 seconds
> >
> > IOZONE performance measurements:
> > 452749 bytes/second for writing the file
> > 825955 bytes/second for reading the file
>
> There's gotta be something screwy somewhere. Here's what I'm getting over
Well, mine isn't screwy.... :) I figure 442K/sec and 806K/sec on a
couple of 486es with IDE drives and an NE2000 client isn't bad. I can
live with that. :)
> IOZONE performance measurements:
> 2214083 bytes/second for writing the file
> 2797368 bytes/second for reading the file>
>
> The NFS server is 100Base-T Full Duplex, the client I ran iozone on was
> 10-BaseT half duplex. Both are connected to an Intel 510T 10/100 switch.
Wait a minute..... How can you get 2162 K/sec on a 10 Mbps link??
> The Artecon is a pretty fast RAID system from what I can see. Doing an
> iozone local to the NFS on the RAID gets:
>
> Writing the 256 Megabyte file, 'iozone.tmp'...25.164062 seconds
> Reading the file...11.546875 seconds
>
> IOZONE performance measurements:
> 10667413 bytes/second for writing the file
> 23247454 bytes/second for reading the file
You are right, that IS fast. :) Want to know how pathetic the disk
subsystem on the 486 NFS server from my first test above is?
Writing the 32 Megabyte file, 'iozone.tmp'...20.031250 seconds
Reading the file...10.273438 seconds
IOZONE performance measurements:
1675104 bytes/second for writing the file
3266134 bytes/second for reading the file
:)
Later...... <Doug>
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