[389-devel] Re: Logging performance improvement

On 06/30/2016 08:14 PM, William Brown wrote:

On Thu, 2016-06-30 at 20:01 -0600, Rich Megginson wrote:  

On 06/30/2016 07:52 PM, William Brown wrote:  

Hi,    I've been thinking about this for a while, so I decided to dump my  thoughts to a document. I think I won't get to implementing this for a  while, but it would really help our server performance.    http://www.port389.org/docs/389ds/design/logging-performance-improvement.html  

  Looks good.  Can we quantify the current log overhead?  

  Sure, I could probably sit down and work out a way to bench mark  this .....     But without the alternative being written, hard to say. I could always  patch out logging and drop the lock in a hacked build so we can show  what "without logging contention" looks like? 

That's only one part of it - you'd have to figure out some way to get rid of the overhead of the formatting and flushing in the operation threads too.

I suppose you could just write it and see what happens.

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