linux-kernel - Re: Bug Report High CPU Usage events_power

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Message-Id: <B525BA20-4B39-4B31-9535-28A93C5B8332@gmail.com>
Date:   Wed, 15 Jul 2020 08:50:13 +0300
From:   Martin Zaharinov <micron10@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     "linux-kernel@...r kernel. org" <linux-kernel@...r.kernel.org>,
        Florian Westphal <fw@...len.de>,
        Eric Dumazet <edumazet@...gle.com>
Subject: Re: Bug Report High CPU Usage events_power_efficient

Hi 

Oki i find the problem is come from nf_conntrack_core 

I isolate problem in this part :

queue_delayed_work(system_power_efficient_wq, &conntrack_gc_work.dwork, HZ);


When package go to queue delayed in one moment if connection track is to big process to delayed go to lock and start high cpu load.

This is need to check and find solution…

For now I remove queue_delayed_work and wait to check machine and will write status.

Martin

> On 8 Jul 2020, at 12:28, Greg KH <gregkh@...uxfoundation.org> wrote:
> 
> 
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
> A: Top-posting.
> Q: What is the most annoying thing in e-mail?
> A: No.
> Q: Should I include quotations after my reply?
> 
> http://daringfireball.net/2007/07/on_top
> 
> On Wed, Jul 08, 2020 at 11:34:52AM +0300, Martin Zaharinov wrote:
>> Yes i search but not find any information.
> 
> Please do the testing yourself, using 'git bisect' to find the offending
> commit.
> 
> thanks,
> 
> greg k-h