Re: My disk I/O testing methods for FreeBSD 5.3 ...

From: Mike Jakubik (mikej_at_rogers.com)
Date: 02/04/05

  • Next message: Jeff Roberson: "Re: My disk I/O testing methods for FreeBSD 5.3 ..." 
    Date: Thu, 3 Feb 2005 21:52:46 -0500 (EST)
To: "Nick Pavlica" <linicks@gmail.com>

    Nick Pavlica said:
    > Jeff,
    > One of the tests where I saw a large difference was in DD. I did a
    > quick test on a server that was brought up to RELENG_5 via cvsup on
    > 2/2/05.
    >
    > The Test:
    > -bash-2.05b$ time dd bs=1024 if=/dev/zero of=tstfile count=1M
    > 1048576+0 records in
    > 1048576+0 records out
    > 1073741824 bytes transferred in 74.402757 secs (14431479 bytes/sec)
    >
    > real 1m14.498s
    > user 0m0.550s
    > sys 0m8.838s

    FYI.

    # time dd bs=1024 if=/dev/zero of=tstfile count=1M
    1048576+0 records in
    1048576+0 records out
    1073741824 bytes transferred in 22.150709 secs (48474377 bytes/sec)

    real 0m22.173s
    user 0m0.501s
    sys 0m13.832s

    This is on an old ATA disk.

    FreeBSD 6.0-CURRENT #0: Wed Jan 19 21:11:16 EST 2005.

    CPU: AMD Athlon(tm) Processor (1410.21-MHz 686-class CPU)
    real memory = 536788992 (511 MB)
    acpi0: <ASUS A7V-133> on motherboard

    ad0: 78167MB <Maxtor 6Y080P0/YAR41BW0> [158816/16/63] at ata0-master UDMA100

    _______________________________________________
    freebsd-performance@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-performance
    To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org"

  • Next message: Jeff Roberson: "Re: My disk I/O testing methods for FreeBSD 5.3 ..."

    Relevant Pages