On Apr 19, 2008, at 4:26 PM, Linus Torvalds wrote:
This is the WebKit archive, right?
For me, doing a "time git status ." on the WebKit thing I just
cloned from
git://git.webkit.org/WebKit.git is much faster: 1.264s (and it goes
down
by maybe 5-10% with my lstat-avoidance patch).
Is there any system-level profiler for OS X to get a clue where
that cost
is, in case it's not the lstat() at all?
If it happens on Leopard, DTrace would be a perfect way to query the
system:
$ dtrace -n 'syscall::*:entry /pid==$target/ { @[probefunc] = count
(); }' -c "git <do stuff>"
E.g.:
$ dtrace -n 'syscall::*:entry /pid==$target/ { @[probefunc] = count
(); }' -c "echo Hello World"
dtrace: description 'syscall::*:entry ' matched 234 probes
Hello World
dtrace: pid 1325 has exited
fstat64 1
getpid 1
getrlimit 1
ioctl 1
mmap 1
munmap 1
rexit 1
sysi86 1
setcontext 2
write 2
Thanks,
Roman.
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