torva...@linux-foundation.org wrote on Fri, 26 Apr 2013 13:31 -0700:
Anyway, I think your patch is good if for no other reason that it
allows this kind of testing, but at least for my machine, clearly the
current default of eight threads is actually good enough. Maybe
somebody with a very
On Mon, Apr 29, 2013 at 03:22:24PM -0700, Junio C Hamano wrote:
John Keeping j...@keeping.me.uk writes:
No, I was the one missing something (--root to be precise). But with
TEST_OUTPUT_DIRECTORY you also get the result files in your temporary
location, not just the trash directory.
With
On Tue, Apr 30, 2013 at 09:08:49AM +0100, John Keeping wrote:
With your patch, doesn't t-*.sh --root $there automatically
use the fast $there temporary location as the result depot, too?
No, the current code uses:
$TEST_OUTPUT_DIRECTORY/$root/trash\ directory.t
where we
On Tue, Apr 30, 2013 at 11:59:39AM -0400, Jeff King wrote:
On Tue, Apr 30, 2013 at 09:08:49AM +0100, John Keeping wrote:
With your patch, doesn't t-*.sh --root $there automatically
use the fast $there temporary location as the result depot, too?
No, the current code uses:
On Tue, Apr 30, 2013 at 05:12:08PM +0100, John Keeping wrote:
So I'm not against TEST_OUTPUT_DIRECTORY as a concept, but I'm having
trouble seeing how it is more useful than --root.
I think the original intent of TEST_OUTPUT_DIRECTORY was to allow other
users of the test framework (in
Linus Torvalds wrote:
Anyway, I think your patch is good if for no other reason that it
allows this kind of testing, but at least for my machine, clearly the
current default of eight threads is actually good enough. Maybe
somebody with a very different machine might want to run the above
On Mon, Apr 29, 2013 at 07:35:01PM +0530, Ramkumar Ramachandra wrote:
On a related note, one place that IO parallelism can provide massive
benefits is in executing shell scripts. Accordingly, I always use the
following commands to compile and test git respectively:
make -j 8 CFLAGS=-g
John Keeping j...@keeping.me.uk writes:
On Mon, Apr 29, 2013 at 07:35:01PM +0530, Ramkumar Ramachandra wrote:
On a related note, one place that IO parallelism can provide massive
benefits is in executing shell scripts. Accordingly, I always use the
following commands to compile and test git
On Mon, Apr 29, 2013 at 08:04:10PM +0200, Thomas Rast wrote:
John Keeping j...@keeping.me.uk writes:
On Mon, Apr 29, 2013 at 07:35:01PM +0530, Ramkumar Ramachandra wrote:
On a related note, one place that IO parallelism can provide massive
benefits is in executing shell scripts.
John Keeping j...@keeping.me.uk writes:
On Mon, Apr 29, 2013 at 08:04:10PM +0200, Thomas Rast wrote:
John Keeping j...@keeping.me.uk writes:
On Mon, Apr 29, 2013 at 07:35:01PM +0530, Ramkumar Ramachandra wrote:
On a related note, one place that IO parallelism can provide massive
Linus Torvalds torva...@linux-foundation.org writes:
Anyway, I think your patch is good if for no other reason that it
allows this kind of testing, but at least for my machine, clearly the
current default of eight threads is actually good enough. Maybe
somebody with a very different machine
Since I reboot fairly regularly to test new kernels, I don't *always*
have the kernel source tree in my caches, so I still care about some
cold-cache performance. And git grep tends to be the most noticeable
one.
Now, I have a SSD, and even the cold-cache case takes just five
seconds or so, but
Linus Torvalds torva...@linux-foundation.org writes:
Wouldn't it be lovely if it was slightly smarter (something more akin
to the index preloading that takes number of files into account) or at
least allowed people to set the parallelism explicitly with a command
line switch?
Yeah, a
On Fri, Apr 26, 2013 at 11:47 AM, Junio C Hamano gits...@pobox.com wrote:
The real issue may be that we do not have a good estimate of how
many paths are involved in the request before starting these
threads, though.
Yes. Also, I'm not sure if the 15% possible improvement on my SSD case
is
Linus Torvalds torva...@linux-foundation.org writes:
Yes. Also, I'm not sure if the 15% possible improvement on my SSD case
is even worth it for something that in the end isn't necessarily the
common case.
Cold cache being uncommon case would be forever true but more and
more people are on
On Fri, Apr 26, 2013 at 12:19 PM, Junio C Hamano gits...@pobox.com wrote:
OK, you have to recompile at least once for experiment, so perhaps
building the test binary with this patch may help.
So here's my experiment on my machine with this patch and the kernel
tree. First I did the warm-cache
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