[OmniOS-discuss] LZ4 compression issue heads up

[Eric Sproul]

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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