maria-discuss team mailing list archive

[Pavel Ivanov <pivanof@xxxxxxxxxx>]

I personally would prefer if MariaDB had performance schema not
compiled in by default. Then we wouldn't be frustrated every time we
upgrade and find out that the tarball doesn't compile without
performance schema (yes, 10.0.11 doesn't compile).

On Tue, Jun 3, 2014 at 1:20 AM, Colin Charles <colin@xxxxxxxxxxx> wrote:
> Hi all,
>
> Recently there was chat about how PERFORMANCE_SCHEMA was enabled by mistake and it should be disabled in the 10.0 series. I'm curious - how many of you are using PERFORMANCE_SCHEMA? Is it a problem to turn it on, if you use it?
>
> I'm referring to:
>         https://mariadb.atlassian.net/browse/MDEV-6249
>
> Looking from the webscalesql list, there are examples of performance degradation:
>         https://groups.google.com/d/msg/webscalesql/B-4bPIb8mHI/eUNsl0lSfbMJ
>         https://groups.google.com/d/msg/webscalesql/B-4bPIb8mHI/-YZMMCuPw3QJ
>
> quote: "Our perf testing agrees with your assessment (we see about a 5%-6% perf hit when it's included and on, and a 2%-3% hit when it's included but off)"
>
> Please discuss this, either here or on MDEV-6249
>
> Thanks
>
> cheers,
> -colin
>
> --
> Colin Charles, Chief Evangelist, SkySQL - The MariaDB Company
> blog: http://bytebot.net/blog/| t: +6-012-204-3201 | Skype: colincharles
>
>
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