Re: [PATCHv2 00/25] perf tool: Add support for multiple data filestorage

[Peter Zijlstra]

On Sun, Sep 01, 2013 at 12:36:11PM +0200, Jiri Olsa wrote:
> hi,
> sending the support for multiple file storage. Initial
> RFC is here:
> http://marc.info/?l=linux-kernel&m=137408381902423&w=2
> 
> v2 changes:
>   - reworked perf mmap size setup to be able to get
>     the mmap size value easily later
>   - added perf.data read/write test for v2 and v3
>     for both endianity
>   - added record '-M time' support

So this 0/n post seems to have forgotten to list the rationale for doing
all this.. 

The only reason I wanted this is so that each thread can write its own
data. The current one file thing is an immense bottle-neck for big
machines.

However your earlier patches didn't do it because of that -- I forgot
why they did it and you're now not telling.


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