# [OmniOS-discuss] No I/O on ZIL logs?

Eric Sproul esproul at omniti.com
Mon Jan 7 12:17:08 EST 2013

- Previous message: [OmniOS-discuss] No I/O on ZIL logs?
- Next message: [OmniOS-discuss] No I/O on ZIL logs?
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

    On Mon, Jan 7, 2013 at 12:08 PM,  <steve at linuxsuite.org> wrote:
    >        zfs set sync=always data1
    >
    >       default is sync=standard

    Note that this will cause a substantial performance penalty, even when
    a slog device is present.  You're effectively turning *all* I/O to the
    data1 pool into synchronous I/O, even if the application didn't ask
    for it.

    A better solution to test ZIL would be to leave the sync property as
    default but run a test that does synchronous I/O.

    Eric

- Previous message: [OmniOS-discuss] No I/O on ZIL logs?
- Next message: [OmniOS-discuss] No I/O on ZIL logs?
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

More information about the OmniOS-discuss mailing list