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Hi,


On Mon, Jan 5, 2015 at 10:47 PM, Michael Stahl <mstahl@redhat.com> wrote:

On 05.01.2015 18:36, Maarten Hoes wrote:

For what its worth, i can easily reproduce the script takes fairly long
(about ~50 seconds on my vm's) to complete on both Ubuntu 14.04 and
Fedora 21, both with the distro supplied binaries and a recent master.

I ran the script using strace -f. It shows a lot of calls on futex(
'FUTEX_WAIT_PRIVATE'), though im not sure how relevant that may be. I
attached the strace output.

please try that again and use strace options -T -r so it's easier to see
where the time is spent.

Done. Unfortunately, the resulting file (even compressed) is too large as
an attachment for this mailing list. Instead, I uploaded it here :

http://filebin.ca/1nCIQSm4AW6n/strace-f-T-r.log.txt.gz

Please tell me if that proves to be problematic; im open for other
suggestions.



this problem is probably not CPU bound,

This is correct. My hosts CPU is barely doing anything during the run of
the script


- Maarten

Context


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