netdev - Re: Huge memory leak with 4.15.0-rc2+

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Message-ID: <65a3563d-396e-e4fb-7dad-937ce999868e@gmail.com>
Date:   Mon, 11 Dec 2017 14:15:45 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     Paweł Staszewski <pstaszewski@...are.pl>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: Huge memory leak with 4.15.0-rc2+

On 12/11/2017 01:48 PM, Paweł Staszewski wrote:
> 
> 
> W dniu 2017-12-11 o 22:23, Paweł Staszewski pisze:
>> Hi
>>
>>
>> I just upgraded some testing host to 4.15.0-rc2+ kernel
>>
>> And after some time of traffic processing - when traffic on all ports
>> reach about 3Mpps - memleak started.
>>


[...]

>> Some observations - when i disable tso on all cards there is more
>> memleak.
>>
>>
>>
>>
>>
> When traffic starts to drop - there is less and less memleak
> below link to memory usage graph:
> https://ibb.co/hU97kG
> 
> And there is rising slab_unrecl - Amount of unreclaimable memory used
> for slab kernel allocations
> 
> 
> Forgot to add that im using hfsc and qdiscs like pfifo on classes.
> 
> 

Maybe some error case I missed in the qdisc patches I'm looking into
it.

Thanks,
John