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From:Michael Widenius Date:January 28 2000 12:45am
Subject:safe_mysqld -> nohup -> nice -> lower performance.
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>>>>> "Tim" == Tim Bunce <Tim.Bunce@stripped> writes:

Tim> safe_mysqld runs mysqld using
Tim> 	nohup $ledir/mysqld ...

Tim> but on some systems (especially where nohup is the GNU nohup) the
Tim> nohup command runs the requested command using "nice -5"!

Tim> That means the mysqld process runs at a lower-than-default priority.

Tim> Both the FreeBSD and Solaris nohup commands don't have this problem.
Tim> Some linux (all I've checked) do.

Tim> Since nohup can be implemented trivially with a few shell commands
Tim> (and often is) why not move those command into the safe_mysqld script?

I will do this for the next release.

Tim> Or supply a custom mysql_nohup shell script that doesn't use nice.
Tim> Either way the problem needs to be either fixed or well documented.

Tim> Meanwhile, people on platforms where nohup is a shell script that
Tim> uses nice might want to hack their nohup to avoid the problem.

Thanks for the info!

Regards,
Monty
Thread
safe_mysqld -> nohup -> nice -> lower performance.Tim Bunce24 Jan
  • safe_mysqld -> nohup -> nice -> lower performance.Michael Widenius28 Jan
    • Re: safe_mysqld -> nohup -> nice -> lower performance.Jose de Leon28 Jan
      • Re: safe_mysqld -> nohup -> nice -> lower performance.Tim Bunce28 Jan
      • Re: safe_mysqld -> nohup -> nice -> lower performance.Michael Widenius28 Jan
    • Re: safe_mysqld -> nohup -> nice -> lower performance.Tim Bunce28 Jan