Date:   Thu, 19 Oct 2017 01:56:58 +0200
From:   Paweł Staszewski <pstaszewski@...are.pl>
To:     Alexander Duyck <alexander.duyck@...il.com>
Cc:     Pavlos Parissis <pavlos.parissis@...il.com>,
        "Anders K. Pedersen | Cohaesio" <akp@...aesio.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "alexander.h.duyck@...el.com" <alexander.h.duyck@...el.com>
Subject: Re: Linux 4.12+ memory leak on router with i40e NICs



W dniu 2017-10-19 o 01:51, Paweł Staszewski pisze:
>
>
> W dniu 2017-10-19 o 01:37, Alexander Duyck pisze:
>> On Wed, Oct 18, 2017 at 4:22 PM, Paweł Staszewski 
>> <pstaszewski@...are.pl> wrote:
>>>
>>> W dniu 2017-10-19 o 00:58, Paweł Staszewski pisze:
>>>
>>>>
>>>> W dniu 2017-10-19 o 00:50, Paweł Staszewski pisze:
>>>>>
>>>>>
>>>>> W dniu 2017-10-19 o 00:20, Paweł Staszewski pisze:
>>>>>>
>>>>>>
>>>>>> W dniu 2017-10-18 o 17:44, Paweł Staszewski pisze:
>>>>>>>
>>>>>>>
>>>>>>> W dniu 2017-10-17 o 16:08, Paweł Staszewski pisze:
>>>>>>>>
>>>>>>>>
>>>>>>>> W dniu 2017-10-17 o 13:52, Paweł Staszewski pisze:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> W dniu 2017-10-17 o 13:05, Paweł Staszewski pisze:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> W dniu 2017-10-17 o 12:59, Paweł Staszewski pisze:
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> W dniu 2017-10-17 o 12:51, Paweł Staszewski pisze:
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> W dniu 2017-10-17 o 12:20, Paweł Staszewski pisze:
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> W dniu 2017-10-17 o 11:48, Paweł Staszewski pisze:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> W dniu 2017-10-17 o 02:44, Paweł Staszewski pisze:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> W dniu 2017-10-17 o 01:56, Alexander Duyck pisze:
>>>>>>>>>>>>>>>> On Mon, Oct 16, 2017 at 4:34 PM, Paweł Staszewski
>>>>>>>>>>>>>>>> <pstaszewski@...are.pl> wrote:
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> W dniu 2017-10-16 o 18:26, Paweł Staszewski pisze:
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> W dniu 2017-10-16 o 13:20, Pavlos Parissis pisze:
>>>>>>>>>>>>>>>>>>> On 15/10/2017 02:58 πμ, Alexander Duyck wrote:
>>>>>>>>>>>>>>>>>>>> Hi Pawel,
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>> To clarify is that Dave Miller's tree or Linus's 
>>>>>>>>>>>>>>>>>>>> that you
>>>>>>>>>>>>>>>>>>>> are talking
>>>>>>>>>>>>>>>>>>>> about? If it is Dave's tree how long ago was it you 
>>>>>>>>>>>>>>>>>>>> pulled
>>>>>>>>>>>>>>>>>>>> it since I
>>>>>>>>>>>>>>>>>>>> think the fix was just pushed by Jeff Kirsher a few 
>>>>>>>>>>>>>>>>>>>> days
>>>>>>>>>>>>>>>>>>>> ago.
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>> The issue should be fixed in the following commit:
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/drivers/net/ethernet/intel/i40e/i40e_txrx.c?id=2b9478ffc550f17c6cd8c69057234e91150f5972 
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> Do you know when it is going to be available on 
>>>>>>>>>>>>>>>>>>> net-next
>>>>>>>>>>>>>>>>>>> and linux-stable
>>>>>>>>>>>>>>>>>>> repos?
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> Cheers,
>>>>>>>>>>>>>>>>>>> Pavlos
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> I will make some tests today night with "net" git 
>>>>>>>>>>>>>>>>>> tree where
>>>>>>>>>>>>>>>>>> this patch is
>>>>>>>>>>>>>>>>>> included.
>>>>>>>>>>>>>>>>>> Starting from 0:00 CET
>>>>>>>>>>>>>>>>>> :)
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Upgraded and looks like problem is not solved with 
>>>>>>>>>>>>>>>>> that patch
>>>>>>>>>>>>>>>>> Currently running system with
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/ 
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> kernel
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Still about 0.5GB of memory is leaking somewhere
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Also can confirm that the latest kernel where memory 
>>>>>>>>>>>>>>>>> is not
>>>>>>>>>>>>>>>>> leaking (with
>>>>>>>>>>>>>>>>> use i40e driver intel 710 cards) is 4.11.12
>>>>>>>>>>>>>>>>> With kernel 4.11.12 - after hour no change in memory 
>>>>>>>>>>>>>>>>> usage.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> also checked that with ixgbe instead of i40e with same
>>>>>>>>>>>>>>>>> net.git kernel there
>>>>>>>>>>>>>>>>> is no memleak - after hour same memory usage - so for 
>>>>>>>>>>>>>>>>> 100%
>>>>>>>>>>>>>>>>> this is i40e
>>>>>>>>>>>>>>>>> driver problem.
>>>>>>>>>>>>>>>> So how long was the run to get the .5GB of memory leaking?
>>>>>>>>>>>>>>> 1 hour
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Also is there any chance of you being able to bisect to
>>>>>>>>>>>>>>>> determine
>>>>>>>>>>>>>>>> where the memory leak was introduced since as you 
>>>>>>>>>>>>>>>> pointed out
>>>>>>>>>>>>>>>> it
>>>>>>>>>>>>>>>> didn't exist in 4.11.12 so odds are it was introduced
>>>>>>>>>>>>>>>> somewhere
>>>>>>>>>>>>>>>> between 4.11 and the latest kernel release.
>>>>>>>>>>>>>>> Can be hard cause currently need to back to 4.11.12 - 
>>>>>>>>>>>>>>> this is
>>>>>>>>>>>>>>> production host/router
>>>>>>>>>>>>>>> Will try to find some free/test router for tests/bicects 
>>>>>>>>>>>>>>> with
>>>>>>>>>>>>>>> i40e driver (intel 710 cards)
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Thanks.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> - Alex
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Also forgoto to add errors for i40e when driver initialize:
>>>>>>>>>>>>>> [   15.760569] i40e 0000:02:00.1: Error I40E_AQ_RC_ENOSPC 
>>>>>>>>>>>>>> adding
>>>>>>>>>>>>>> RX filters on PF, promiscuous mode forced on
>>>>>>>>>>>>>> [   16.365587] i40e 0000:03:00.3: Error I40E_AQ_RC_ENOSPC 
>>>>>>>>>>>>>> adding
>>>>>>>>>>>>>> RX filters on PF, promiscuous mode forced on
>>>>>>>>>>>>>> [   16.367686] i40e 0000:02:00.2: Error I40E_AQ_RC_ENOSPC 
>>>>>>>>>>>>>> adding
>>>>>>>>>>>>>> RX filters on PF, promiscuous mode forced on
>>>>>>>>>>>>>> [   16.368816] i40e 0000:03:00.0: Error I40E_AQ_RC_ENOSPC 
>>>>>>>>>>>>>> adding
>>>>>>>>>>>>>> RX filters on PF, promiscuous mode forced on
>>>>>>>>>>>>>> [   16.369877] i40e 0000:03:00.2: Error I40E_AQ_RC_ENOSPC 
>>>>>>>>>>>>>> adding
>>>>>>>>>>>>>> RX filters on PF, promiscuous mode forced on
>>>>>>>>>>>>>> [   16.370941] i40e 0000:02:00.3: Error I40E_AQ_RC_ENOSPC 
>>>>>>>>>>>>>> adding
>>>>>>>>>>>>>> RX filters on PF, promiscuous mode forced on
>>>>>>>>>>>>>> [   16.372005] i40e 0000:02:00.0: Error I40E_AQ_RC_ENOSPC 
>>>>>>>>>>>>>> adding
>>>>>>>>>>>>>> RX filters on PF, promiscuous mode forced on
>>>>>>>>>>>>>> [   16.373029] i40e 0000:03:00.1: Error I40E_AQ_RC_ENOSPC 
>>>>>>>>>>>>>> adding
>>>>>>>>>>>>>> RX filters on PF, promiscuous mode forced on
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> some params that are set for this nic's
>>>>>>>>>>>>>>          ip link set up dev $i
>>>>>>>>>>>>>>          ethtool -A $i autoneg off rx off tx off
>>>>>>>>>>>>>>          ethtool -G $i rx 1024 tx 2048
>>>>>>>>>>>>>>          ip link set $i txqueuelen 1000
>>>>>>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>>>>>>> rx-usecs
>>>>>>>>>>>>>> 512 tx-usecs 128
>>>>>>>>>>>>>>          ethtool -L $i combined 6
>>>>>>>>>>>>>>          #ethtool -N $i rx-flow-hash udp4 sdfn
>>>>>>>>>>>>>>          ethtool -K $i ntuple on
>>>>>>>>>>>>>>          ethtool -K $i gro off
>>>>>>>>>>>>>>          ethtool -K $i tso off
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>> Also after TSO/GRO on there is memory usage change - and 
>>>>>>>>>>>>> leaking
>>>>>>>>>>>>> faster
>>>>>>>>>>>>> Below image from memory usage before change with TSO/GRO 
>>>>>>>>>>>>> OFF and
>>>>>>>>>>>>> after enabling TSO/GRO
>>>>>>>>>>>>>
>>>>>>>>>>>>> https://ibb.co/dTqBY6
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> Thanks
>>>>>>>>>>>>> Pawel
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>> With settings like this:
>>>>>>>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1
>>>>>>>>>>>> enp3s0f2 enp3s0f3'
>>>>>>>>>>>> for i in $ifc
>>>>>>>>>>>>          do
>>>>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>>>>> rx-usecs 512
>>>>>>>>>>>> tx-usecs 128
>>>>>>>>>>>>          ethtool -K $i gro on
>>>>>>>>>>>>          ethtool -K $i tso on
>>>>>>>>>>>>
>>>>>>>>>>>>          done
>>>>>>>>>>>>
>>>>>>>>>>>> Server is leaking about 4-6MB per each 10 seconds
>>>>>>>>>>>> MEMLEAK:
>>>>>>>>>>>> 5  MB/10sec
>>>>>>>>>>>> 6  MB/10sec
>>>>>>>>>>>> 4  MB/10sec
>>>>>>>>>>>> 4  MB/10sec
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Other settings TSO/GRO off
>>>>>>>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1
>>>>>>>>>>>> enp3s0f2 enp3s0f3'
>>>>>>>>>>>> for i in $ifc
>>>>>>>>>>>>          do
>>>>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>>>>> rx-usecs 512
>>>>>>>>>>>> tx-usecs 128
>>>>>>>>>>>>          ethtool -K $i gro off
>>>>>>>>>>>>          ethtool -K $i tso off
>>>>>>>>>>>>
>>>>>>>>>>>>          done
>>>>>>>>>>>>
>>>>>>>>>>>> Same leak about 5MB per 10 seconds
>>>>>>>>>>>> MEMLEAK:
>>>>>>>>>>>> 5  MB/10sec
>>>>>>>>>>>> 5  MB/10sec
>>>>>>>>>>>> 5  MB/10sec
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Other settings rx-usecs change from 512 to 1024:
>>>>>>>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1
>>>>>>>>>>>> enp3s0f2 enp3s0f3'
>>>>>>>>>>>> for i in $ifc
>>>>>>>>>>>>          do
>>>>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>>>>> rx-usecs
>>>>>>>>>>>> 1024 tx-usecs 128
>>>>>>>>>>>>          ethtool -K $i gro off
>>>>>>>>>>>>          ethtool -K $i tso off
>>>>>>>>>>>>
>>>>>>>>>>>>          done
>>>>>>>>>>>>
>>>>>>>>>>>> MEMLEAK:
>>>>>>>>>>>> 4  MB/10sec
>>>>>>>>>>>> 3  MB/10sec
>>>>>>>>>>>> 4  MB/10sec
>>>>>>>>>>>> 4  MB/10sec
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> So memleak have something to do with rx-usecs (less 
>>>>>>>>>>>> interrupts but
>>>>>>>>>>>> bigger latency for traffic)
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> But also enabling TSO/GRO making leak about 1MB bigger for 
>>>>>>>>>>>> each 10
>>>>>>>>>>>> seconds
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>> So far best config is:
>>>>>>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1 
>>>>>>>>>>> enp3s0f2
>>>>>>>>>>> enp3s0f3'
>>>>>>>>>>> for i in $ifc
>>>>>>>>>>>          do
>>>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>>>> rx-usecs 64
>>>>>>>>>>> tx-usecs 512
>>>>>>>>>>>          ethtool -K $i gro off
>>>>>>>>>>>          ethtool -K $i tso on
>>>>>>>>>>>
>>>>>>>>>>>          done
>>>>>>>>>>>
>>>>>>>>>>> MEMLEAK - about 2MB/10secs
>>>>>>>>>>> 2  MB/10sec
>>>>>>>>>>> 2  MB/10sec
>>>>>>>>>>> 2  MB/10sec
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> With - rx-usecs set to 256 (about 7-9MB/10secs memleak)
>>>>>>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1 
>>>>>>>>>>> enp3s0f2
>>>>>>>>>>> enp3s0f3'
>>>>>>>>>>> for i in $ifc
>>>>>>>>>>>          do
>>>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>>>> rx-usecs 256
>>>>>>>>>>> tx-usecs 512
>>>>>>>>>>>          ethtool -K $i gro off
>>>>>>>>>>>          ethtool -K $i tso on
>>>>>>>>>>>
>>>>>>>>>>>          done
>>>>>>>>>>>
>>>>>>>>>>> MEMLEAK:
>>>>>>>>>>> 7  MB/10sec
>>>>>>>>>>> 7  MB/10sec
>>>>>>>>>>> 8  MB/10sec
>>>>>>>>>>> 9  MB/10sec
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>> And even less memleak with rx-usecs set to 32
>>>>>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1 
>>>>>>>>>> enp3s0f2
>>>>>>>>>> enp3s0f3'
>>>>>>>>>> for i in $ifc
>>>>>>>>>>          do
>>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>>> rx-usecs 32
>>>>>>>>>> tx-usecs 512
>>>>>>>>>>          ethtool -K $i gro off
>>>>>>>>>>          ethtool -K $i tso on
>>>>>>>>>>
>>>>>>>>>>          done
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> MEMLEAK - about 0-2MB for each 10 seconds
>>>>>>>>>> 0  MB/10sec
>>>>>>>>>> 1  MB/10sec
>>>>>>>>>> 0  MB/10sec
>>>>>>>>>> 2  MB/10sec
>>>>>>>>>> 1  MB/10sec
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> So best settings - to have as less leak as possible for now 
>>>>>>>>> (rx-usecs
>>>>>>>>> set to 16):
>>>>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1 
>>>>>>>>> enp3s0f2
>>>>>>>>> enp3s0f3'
>>>>>>>>> for i in $ifc
>>>>>>>>>          do
>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>> rx-usecs 16
>>>>>>>>> tx-usecs 768
>>>>>>>>>          ethtool -K $i gro on
>>>>>>>>>          ethtool -K $i tso on
>>>>>>>>>
>>>>>>>>>          done
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> MEMLEAK: (0-1MB/10seconds)
>>>>>>>>> 0  MB/10sec
>>>>>>>>> 0  MB/10sec
>>>>>>>>> 0  MB/10sec
>>>>>>>>> 1  MB/10sec
>>>>>>>>> 1  MB/10sec
>>>>>>>>> -1  MB/10sec
>>>>>>>>> 1  MB/10sec
>>>>>>>>> 1  MB/10sec
>>>>>>>>> 0  MB/10sec
>>>>>>>>>
>>>>>>>>> (there are some memory recycles - so this is good :) )
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Compared to(rx-usecs 512):
>>>>>>>>>
>>>>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1 
>>>>>>>>> enp3s0f2
>>>>>>>>> enp3s0f3'
>>>>>>>>> for i in $ifc
>>>>>>>>>          do
>>>>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off 
>>>>>>>>> rx-usecs 512
>>>>>>>>> tx-usecs 128
>>>>>>>>>          ethtool -K $i gro on
>>>>>>>>>          ethtool -K $i tso on
>>>>>>>>>
>>>>>>>>>          done
>>>>>>>>>
>>>>>>>>> Server is leaking about 4-6MB per each 10 seconds
>>>>>>>>> MEMLEAK:
>>>>>>>>> 5  MB/10sec
>>>>>>>>> 6  MB/10sec
>>>>>>>>> 4  MB/10sec
>>>>>>>>> 4  MB/10sec
>>>>>>>>>
>>>>>>>>>
>>>>>>>> And  graph where all changes for rx-usecs was done over some time:
>>>>>>>> https://ibb.co/nrRfbR
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>> Cant eliminate the problem with settings - memleak is bigger or 
>>>>>>> less
>>>>>>> visible with rx-usecs set to low values - but then have 100% cpu 
>>>>>>> load - cant
>>>>>>> have rx-usecs set to 16
>>>>>>>
>>>>>>> Cant find also other host with same cards or that are using i40e 
>>>>>>> driver
>>>>>>> for tests with bisecting
>>>>>>> So will just replace to mellanox :)
>>>>>>>
>>>>>>>
>>>>>> Also after fresh reboot with i40e
>>>>>> startup settings:
>>>>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1 enp3s0f2
>>>>>> enp3s0f3'
>>>>>> for i in $ifc
>>>>>>          do
>>>>>>          ip link set up dev $i
>>>>>>          ethtool -A $i autoneg off rx off tx off
>>>>>>          ethtool -G $i rx 2048 tx 2048
>>>>>>          ip link set $i txqueuelen 1000
>>>>>>          #ethtool -C $i rx-usecs 256
>>>>>>          ethtool -C $i adaptive-rx off adaptive-tx off rx-usecs 17
>>>>>> tx-usecs 125
>>>>>>          ethtool -L $i combined 6
>>>>>>          #ethtool -N $i rx-flow-hash udp4 sdfn
>>>>>>          #ethtool -K $i ntuple on
>>>>>>          #ethtool -K $i gro off
>>>>>>          #ethtool -K $i tso off
>>>>>>          done
>>>>>>
>>>>>>
>>>>>> After issuing:
>>>>>>
>>>>>>   ethtool -K enp2s0f0 gro on tso on
>>>>>>
>>>>>> dmesg shows
>>>>>> [35764.338259] i40e 0000:02:00.0: PF reset failed, -15
>>>>>>
>>>>>>
>>>>>> and no traffic on the card :)
>>>>>>
>>>>>>
>>>>> Also checked now
>>>>> bigger rx ring
>>>>>          ethtool -G $i rx 2048 tx 2048
>>>>>
>>>>>
>>>>> Bigger memleag :)
>>>>>
>>>>>
>>>>>
>>>> ok need to change cards now to ixgbe .... no reply no help for i40e so
>>>> ....
>>>>
>>>> maybee someone else with i40e will gather more data i have only 
>>>> this host
>>>> soo far - will try to install this cards to other hosts after 
>>>> change but
>>>> alll this movement will takes about 2 maybee 3 months - nobody from 
>>>> my team
>>>> want to but now cards that supports i40e cause of this bug soo this 
>>>> is hard
>>>> now to debug - i need to change also all cards now >10G to mellanox 
>>>> that
>>>> have no such bug ... sorry :)
>>>>
>>>>
>>> Last tests from my side:)
>>> settings
>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1 enp3s0f2
>>> enp3s0f3'
>>> for i in $ifc
>>>          do
>>>          ip link set up dev $i
>>>          ethtool -A $i autoneg off rx off tx off
>>>          ethtool -G $i rx 2048 tx 2048
>>>          ip link set $i txqueuelen 1000
>>>          ethtool -C $i adaptive-rx off adaptive-tx off rx-usecs 17 
>>> tx-usecs
>>> 125
>>>          ethtool -L $i combined 6
>>>          ethtool -K $i ntuple on
>>>          ethtool -K $i gro on
>>>          ethtool -K $i tso on
>>>          done
>>>
>>> MEMLEAK 1-2MB/10secs
>>> 1  MB/10sec
>>> 2  MB/10sec
>>> 1  MB/10sec
>>> 2  MB/10sec
>>> 2  MB/10sec
>>> 2  MB/10sec
>>> 1  MB/10sec
>>> 2  MB/10sec
>>> 2  MB/10sec
>>> 2  MB/10sec
>>> 1  MB/10sec
>>> 2  MB/10sec
>>> 1  MB/10sec
>>> 1  MB/10sec
>>> 0  MB/10sec
>>> 2  MB/10sec
>>> 2  MB/10sec
>>> 0  MB/10sec
>>> 2  MB/10sec
>>> 5  MB/10sec
>>>
>>> Change rx-usecs 16 tx usecs 16
>>> ifc='enp2s0f0 enp2s0f1 enp2s0f2 enp2s0f3 enp3s0f0 enp3s0f1 enp3s0f2
>>> enp3s0f3'
>>> for i in $ifc
>>>          do
>>>          ip link set up dev $i
>>>          ethtool -A $i autoneg off rx off tx off
>>>          ethtool -G $i rx 2048 tx 2048
>>>          ip link set $i txqueuelen 1000
>>>          ethtool -C $i adaptive-rx off adaptive-tx off rx-usecs 16 
>>> tx-usecs
>>> 16
>>>          ethtool -L $i combined 6
>>>          ethtool -K $i ntuple on
>>>          ethtool -K $i gro on
>>>          ethtool -K $i tso on
>>>          done
>>>
>>> MEMLEAK: 0-2MB/s with some recycles
>>> 0  MB/10sec
>>> 0  MB/10sec
>>> 0  MB/10sec
>>> 0  MB/10sec
>>> 0  MB/10sec
>>> 0  MB/10sec
>>> 1  MB/10sec
>>> 0  MB/10sec
>>> 2  MB/10sec
>>> 0  MB/10sec
>>> 2  MB/10sec
>>> -1  MB/10sec
>>> 0  MB/10sec
>>> 2  MB/10sec
>>> 0  MB/10sec
>>> 2  MB/10sec
>>> -1  MB/10sec
>>> 1  MB/10sec
>> This data doesn't tell me much of anything and isn't what I asked for.
>> I don't see how the interrupt throttling rate would be associated with
>> your memory leak other than possibly rate limiting it by rate limiting
>> the traffic itself. Is there something that gave you the impression
>> that interrupt rate was somehow involved?
> more interrupts more leak
>
>>
>> When we last talked I had asked if you could do a git bisect to find
>> the memory leak and you said you would look into it. The most useful
>> way to solve this would be to do a git bisect between your current
>> kernel and the 4.11 kernel to find the point at which this started. If
>> we can do that then fixing this becomes much simpler as we just have
>> to fix the patch that introduced the issue.
>>
>> Also, I don't know it is you are using to determine that there is a
>> memory leak. What tool is it you are using to do the tracking? Is
>> there any specific form of traffic that is causing the leak? If you
>> can't perform the bisection, any information you could provide that
>> would allow me to do it would also be useful.
> simple script
>
> mem1=`free -m | grep Mem: | awk '{print $3}'`
> sleep 10
> mem2=`free -m | grep Mem: | awk '{print $3}'`
>
> num=$((mem2 - mem1))
> echo $num " MB/10sec"
>
>
> There is nothing more that gets mem
> there is only routed traffic from interface A to B
> nothings takes mem
> And memleaks only anchge when i change the rx/tx usecs for card
>
> What You need more ?
>
> imagine this is not my only prblem but many - i just want to help i 
> changed cards to i40e based only cause somebody rises a bug - and i 
> want to use i40e in feature - dont need them now - but maybee it is 
> good to help ppl to solwe some problems now if i can - before i will 
> use this cards ?
> I try to use i40e before but there was bug covered by bug - and nobody 
> from e1000.sf can help me they just reply after year and closing 
> tickets with info about no activity but they have info in reported 
> bugs ... soooo what is this ? support center ? for me no .
> If i want to help -= after a year response will be something like - 
> "dont care now" - cause i'v used other hw or sme hacks to repair 
> problem that should be sloved by intel
>
>>
>> Thanks.
>>
>> - Alex
>>
>
>
What i can say more


is that
if:
adaptive-rx  off
adaptive-tx off
rx-usecs 10
tx-usecs 10

There is almost no memleak

but i dont know if this is problem rx-usecx=tx-usecs - then no memleak
or just lower numbers for rx/tx-usecs - are doing this


But if You see my graphs You will see that less rx-usecs = less memleak

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