Re: [PATCH -tip] perf_counter tools: shorten names for events

[Anton Blanchard <anton@samba.org>]

Hi,

> IMHO "L1d" is too abbreviated for it to be obvious that it means L1 data
> cache.  If you want something really short maybe "L1-d$" might be a
> little clearer, but I stil like "L1-dcache" best.

There's one problem with L1-d$-* for event names. It took me a few goes
before I realised I was being hit by bash variable expansion:


#  perf stat -e L1-d$-loads ls

 usage: perf stat [<options>] <command>

...


# perf stat -e 'L1-d$-loads' ls

 Performance counter stats for 'ls':

        1273291  L1-d$-loads             

    0.004434037  seconds time elapsed


I also prefer the more verbose L1-dcache-* names, and since we support
aliases its mostly a matter of screen real estate when printing out the
statistics.

Anton