[PATCH] Simple malloc benchtest.

[Siddhesh Poyarekar]

On 23 December 2013 22:00, Ondřej Bílka <neleai@seznam.cz> wrote:
> No that would be bad first step. Tweak could look like improvement in
> simple tests but really be a regression in real world. And if you have
> real world data then simulated data are useless.

You're again talking about microbenchmarks vs system benchmarks, which
is honestly just a waste of time and in this thread, it is
contradicting your own point of introducing an initial simple
microbenchmark.

> When you want to compare alternative allocator you need to check effects of
> fragmentation, number of cache misses, RSS and virtual memory size and other
> factors on hooked applications and there is no shortcut around that.

You need all this to form a complete picture of the performance of an
allocator regardless of whether you're comparing with another
allocator or not.  That is, ideally one ought to be looking at the
impact of a change in an allocator on all these parameters, but you
need to start somewhere.  I thought the intention of your patch was to
make that start, so if you're saying that it's not useful then you're
essentially contradicting yourself.

Siddhesh
-- 
http://siddhesh.in