[dm-devel] Improve processing efficiency for addition and deletion of multipath devices

[Zdenek Kabelac]

Dne 23.11.2016 v 02:08 tang.junhui at zte.com.cn napsal(a):
> So, now we have at least 4 ways to improve mutliapth efficiency:
> 1)  Filtering uevents;
> 2)  Merger uevents;
> 3)  Using separate locks for mpvec and pathvec;
> 4)  Get rid of the gazillion waiter threads.
>
> This is exciting, but how do we achieve this blueprint?
> Can we set up some working groups and develop it in parallel
> to implement each improvement since most of them are independent?
>

I'm missing here the analysis of impact on performance.

Do we have 'perf' traces and other reports where is the CPU wasted ?

While surely solving all issues make sense - there are some tasks which have 
major impact on speed - while others user will most not notice at all.


Regards

Zdenek