# [OmniOS-discuss] LZ4 compression issue heads up

Eric Sproul esproul at omniti.com
Fri Apr 19 09:40:59 EDT 2013

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    Thanks for the update, Sašo.  We will make sure the upstream patch is
    part of the upcoming r151006 release.

    Eric

    On Thu, Apr 18, 2013 at 6:24 PM, Sašo Kiselkov <skiselkov.ml at gmail.com> wrote:
    > On 04/19/2013 12:15 AM, Sriram Narayanan wrote:
    >> He also provided some updated information later explaining how this issues
    >> comes up in case of specific advanced DTrace scripts, and that users would
    >> not otherwise get affected.
    >
    > This turned out not to be quite accurate. When using lockstat Matthew
    > Ahrens could get this to trigger (lockstat is implemented using DTrace).
    > How "bad" the issue is, I guess, depends on perspective. I'm using LZ4
    > in production now without a hitch. However, the issue is significant
    > enough that I might be willing to do a reboot to have it fixed.
    >
    > In any case a patch is awaiting approval for upstreaming. It fixes the
    > problem and even provides a slight performance improvement tweak (for
    > compensation, I guess).
    >
    > Cheers,
    > --
    > Saso
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