Re: Severe performance degradation on Linux

Maarten Hoes <hoes.maarten -AT- gmail.com>
Mon, 5 Jan 2015 18:36:47 +0100

Hi,


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.


- Maarten

Attachment: strace.txt.gz
Description: GNU Zip compressed data

Context

Re: Severe performance degradation on Linux · Jens Tröger
- Re: Severe performance degradation on Linux · Maarten Hoes
  - Re: Severe performance degradation on Linux · Markus Mohrhard
    - Re: Severe performance degradation on Linux · Maarten Hoes
      - Re: Severe performance degradation on Linux · Jens Tröger
        
        Re: Severe performance degradation on Linux · Maarten Hoes
        
        Re: Severe performance degradation on Linux · Jens Tröger
        
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        Re: Severe performance degradation on Linux · Maarten Hoes
        Re: Severe performance degradation on Linux · Jens Tröger
        
        Re: Severe performance degradation on Linux · Michael Stahl
        (message not available)
        Re: Severe performance degradation on Linux · Maarten Hoes
        Re: Severe performance degradation on Linux · Noel Grandin
        Re: Severe performance degradation on Linux · Maarten Hoes
        Re: Severe performance degradation on Linux · Michael Meeks
        Re: Severe performance degradation on Linux · Maarten Hoes
        Re: Severe performance degradation on Linux · Michael Meeks
        Re: Severe performance degradation on Linux · Maarten Hoes
        Re: Severe performance degradation on Linux · Maarten Hoes

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