Messages in this thread | | | Date | Tue, 10 Sep 2013 09:54:38 +0300 | From | Adrian Hunter <> | Subject | Re: [PATCHv2 00/25] perf tool: Add support for multiple data file storage |
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On 09/09/13 14:17, Peter Zijlstra wrote: > 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.
Do you need multiple files for that? Why not just feed writes to a pool of threads?
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