On Sat 25.Jul'09 at 21:57:39 +0300, Timo Hirvonen wrote:
> Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> > So curl really must die. It may not matter for the expensive operations,
> > but a lot of scripting is about running all those "cheap" things that just
> > add up over time.
>
> SELinux is the problem, not curl.
I don't have SELinux, and without curl it takes ~50% less time (on
top of Linus' previous optimizations!).
The time to open() all the libs really sums up to a considerable
fraction (when the total time is low, not when compared to the
huge 6 secs of before)
Without curl:
[mafra@Pilar:linux-2.6]$ grep open strace-nocurl.log |grep lib \
> | awk -F "<" '{print $2}' | sed s/\>// | awk '{s += $1} END {print s}'
0.070104
With curl:
[mafra@Pilar:linux-2.6]$ grep open strace-curl.log |grep lib \
> | awk -F "<" '{print $2}' | sed s/\>// | awk '{s += $1} END {print s}'
0.249764
PS: It is interesting that in my laptop the time required
to open libcurl alone is 20x the total time of 'git branch' for Linus'
in his supercomputer:
open("/usr/lib64/libcurl.so.4", O_RDONLY) = 3 <0.066239>
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