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Date: Wed, 29 Jun 2011 15:27:36 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: Anti-bloat side project
On Wed, Jun 29, 2011 at 04:19:45PM +0200, Szabolcs Nagy wrote:
> * Rich Felker <dalias@...ifal.cx> [2011-06-27 17:43:00 -0400]:
> > Of course a better question is... why does "hello world" need to load
> > any modules anyway? Perhaps a best first step to fixing the problem
> > would be to demodularize and static link any module that will always
> > be loaded...
>
> btw applications are worse even if they are written in c
Well we're now talking about applications which actually DO
something...
> gtk hello:
> $ strace zenity --info --text=hello 2>&1 |wc -l
> 6491
What about the gtk hello world from the gtk tutorial?
> x terminal emulators:
> $ strace xterm -e /bin/true 2>&1 |wc -l
> 1214
> $ strace urxvt -e /bin/true 2>&1 |wc -l
> 850
These numbers are not that bad... only about twice as much as Python
and doing A LOT more. By the way, uuterm is 525, so the vast majority
of that is xlib... (Of course then uuterm starts the evil blinking
cursor if you leave it sitting.. ;)
> $ strace -c -Scalls zenity --info --text=hello
> % time seconds usecs/call calls errors syscall
> ------ ----------- ----------- --------- --------- ----------------
> 13.70 0.000181 0 1510 417 stat64
> 9.84 0.000130 0 1277 573 open
> 59.95 0.000792 1 988 getdents64
Looks like it's performing a lot of scandir or glob...
> $ strace -c -Scalls -f firefox -P empty -url about:blank
> ....
> 64.14 0.849392 1361 624 26 futex
624 cases of lock contention during startup is pretty bad...
> 0.24 0.003125 156 20 clone
Of course 20 threads could contribute to that...
> 0.48 0.006364 424 15 2 wait4
And lots of child processes..?!
Rich
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