Re: large amount of sys time when using posix threads

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To: Debajyoti Chatterjee <dchatterjee172@xxxxxxxxx>, gcc-help@xxxxxxxxxxx
Subject: Re: large amount of sys time when using posix threads
From: Andrew Haley <aph@xxxxxxxxxx>
Date: Sun, 30 Oct 2016 08:46:12 +0000
In-reply-to: <CACRAetqTFMxxTEjH5V4VtF00aPXPMz=prZJ3m3xWeYzx1Uc--g@mail.gmail.com>
References: <CACRAetqTFMxxTEjH5V4VtF00aPXPMz=prZJ3m3xWeYzx1Uc--g@mail.gmail.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

On 30/10/16 06:46, Debajyoti Chatterjee wrote:
> Then why 15 seconds was wasted in kernel? I have an dual-core
> hyper-threaded Intel CPU. and kernel version 4.7.9

I can guess, but it's hard to say without seeing the code.

Andrew.

References:
- large amount of sys time when using posix threads
  - From: Debajyoti Chatterjee

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