On Sat, 26 May 2012, Stephen Frost wrote:

Alright, can you just time 'cat' when they're started a few seconds or
whatever apart from each other?  I can't imagine it being affected in
the same way as these, but seems like it wouldn't hurt to check.

I've tryed cat'ting a created in advance 8gig file on the same filesystem.
And during the multi-threaded run it takes ~4sec, roughly the same as when run separately.


*****************************************************
Sergey E. Koposov, PhD, Research Associate
Institute of Astronomy, University of Cambridge
Madingley road, CB3 0HA, Cambridge, UK
Tel: +44-1223-337-551 Web: http://www.ast.cam.ac.uk/~koposov/

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