lkml.org 
[lkml]   [2006]   [Oct]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Postal 56% waits for flock_lock_file_wait
    On Mon, Oct 02, 2006 at 06:51:56PM +0100, Alan Cox wrote:
    > Ar Llu, 2006-10-02 am 13:11 -0400, ysgrifennodd Trond Myklebust:
    > > Ext3 does not use flock() in order to lock its journal. The performance
    > > issues that he is seeing may well be due to the journalling, but that
    > > has nothing to do with flock_lock_file_wait.
    >
    > The ext3 journal also generally speaking improves many-writer
    > performance as do the reservations so the claim seems odd on that basis
    > too. Rerun the test on a gigabyte iRam or similar and you'll see where
    > the non-media bottlenecks actually are

    "or similar" maybe. The iRam is pretty much junk in my experience[*].
    It rarely survives a mkfs, let alone sustained high throughput I/O.
    (And yes, I did try multiple DIMMs, including ones which survive
    memtest86 just fine).

    Another "Boots Windows, ship it" QA disaster afaics.

    Dave

    [*] And from googling/talking with other owners, my experiences aren't unique.

    --
    http://www.codemonkey.org.uk
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-10-02 19:43    [W:0.021 / U:14.324 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site