Re: FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion

From: Mike Tancsa (mike_at_sentex.net)
Date: 01/26/05

  • Next message: Robert Watson: "Re: FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion" 
    Date: Wed, 26 Jan 2005 15:27:30 -0500
To: Nick Pavlica <linicks@gmail.com>, freebsd-questions@freebsd.org, freebsd-performance@freebsd.org

    At 01:47 PM 26/01/2005, Nick Pavlica wrote:
    >All,
    > With the recent release of 4.11 I thought that I would give it a

    Yes, I found the same thing basically. My test box is a P4 3Ghz with 2G
    of RAM on a 3ware 8605 controller with 4 drives in RAID5. Virtually every
    test I did with iozone* showed a difference anywhere from 10-40% in favor
    of RELENG_4.

    Note, this is a 2G RAM machine hence the odd result for the 1.5G test

                   -------Sequential Output-------- ---Sequential Input--
    --Random--
                   -Per Char- --Block--- -Rewrite-- -Per Char- --Block---
    --Seeks---
    Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec
    %CPU
    4 1500 37673 23.7 37848 6.6 40784 7.7 97064 99.8 1174906 99.4
    89867.4 99.6
    4 3000 38492 24.6 38753 7.0 18396 4.1 80355
    86.0 92051 9.9 605.1 1.0
    5 1500 31226 23.0 34529 7.9 36444 8.9 110295 99.8 983156 92.5
    27388.8 99.6
    5 3000 33820 26.1 34309 8.3 13339 3.7 59807
    56.8 68059 9.8 330.8 0.9

    And a local postmark test. RELENG_4 and RELENG_5

    pm>set size 300 100000
    pm>set location /card0-a
    pm>set transactions 400000
    pm>run
    Creating files...Done
    Performing transactions..........Done
    Deleting files...Done
    Time:
             1219 seconds total
             1219 seconds of transactions (328 per second)

    Files:
             200107 created (164 per second)
                     Creation alone: 500 files (500 per second)
                     Mixed with transactions: 199607 files (163 per second)
             199905 read (163 per second)
             199384 appended (163 per second)
             200107 deleted (164 per second)
                     Deletion alone: 889 files (889 per second)
                     Mixed with transactions: 199218 files (163 per second)

    Data:
             12715.55 megabytes read (10.43 megabytes per second)
             12728.92 megabytes written (10.44 megabytes per second)
    pm>

    pm>set size 300 100000
    pm>set location /card0-a
    pm>set transactions 400000
    pm>run
    Creating files...Done
    Performing transactions..........Done
    Deleting files...Done
    Time:
             2824 seconds total
             2822 seconds of transactions (141 per second)

    Files:
             200107 created (70 per second)
                     Creation alone: 500 files (500 per second)
                     Mixed with transactions: 199607 files (70 per second)
             199905 read (70 per second)
             199384 appended (70 per second)
             200107 deleted (70 per second)
                     Deletion alone: 889 files (889 per second)
                     Mixed with transactions: 199218 files (70 per second)

    Data:
             12715.55 megabytes read (4.50 megabytes per second)
             12728.92 megabytes written (4.51 megabytes per second)
    pm>

    *I have the iozone results in 2 .xls files if anyone wants to see them at

    http://www.tancsa.com/iozone-r5vsr4.zip

    _______________________________________________
    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: Robert Watson: "Re: FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion"