[Nfd-dev] What makes nfd grow in size?

[Davide Pesavento]

I suggest using valgrind's memcheck and massif tools on the nfd process.

Best,
Davide

On Mon, Jan 26, 2015 at 10:45 PM, John DeHart <jdd at wustl.edu> wrote:
>
> Junxiao,
>
> Here are two snapshots of the counters after the time that the CS fills
> and is no longer growing:
>
> Tue Jan 27 05:35:38 CST 2015
> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME COMMAND
> 4     0  8414     1  20   0 1782908 1642192 ?   Rsl  ?          7:15
> /usr/bin/nfd --config /etc/ndn/nfd.conf
>
> General NFD status:
>                  nfdId=/localhost/daemons/nfd/KEY/ksk-1406409442387/ID-CERT
>                version=0.2.0-88-gc5173de
>              startTime=20150126T210446.307000
>            currentTime=20150126T213538.190000
>                 uptime=1851 seconds
>       nNameTreeEntries=897
>            nFibEntries=65
>            nPitEntries=434
>   nMeasurementsEntries=366
>             nCsEntries=8192
>           nInInterests=604737
>          nOutInterests=317119
>               nInDatas=179061
>              nOutDatas=319898
> --
> Tue Jan 27 05:37:17 CST 2015
> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME COMMAND
> 4     0  8414     1  20   0 1926616 1647376 ep_pol Ssl ?        7:48
> /usr/bin/nfd --config /etc/ndn/nfd.conf
>
> General NFD status:
>                  nfdId=/localhost/daemons/nfd/KEY/ksk-1406409442387/ID-CERT
>                version=0.2.0-88-gc5173de
>              startTime=20150126T210446.307000
>            currentTime=20150126T213717.379000
>                 uptime=1951 seconds
>       nNameTreeEntries=876
>            nFibEntries=65
>            nPitEntries=397
>   nMeasurementsEntries=360
>             nCsEntries=8191
>           nInInterests=649582
>          nOutInterests=340120
>               nInDatas=194721
>              nOutDatas=349244
>
> I don't see any of the table sizes growing at this point but the nfd VSZ
> continues to grow.
>
> Also, here is the version of nfd I am running on the Testbed.
> ndnops at ndnops:~$ nfd --version
> 0.2.0-88-gc5173de
> ndnops at ndnops:~$
>
>
> Thanks,
> John
>
>
>
> On 1/26/15 3:09 PM, Junxiao Shi wrote:
>
> Hi John
>
> This may or may not be a memory leak.
>
> Please collect the output of `nfd-status -vf` in order to determine whether
> a certain table is growing.
>
> Yours, Junxiao
>
> On Mon, Jan 26, 2015 at 2:01 PM, John DeHart <jdd at wustl.edu> wrote:
>>
>>
>> All:
>>
>> I'm having a problem on one of the NDN Testbed nodes with nfd growing
>> to an unreasonable size.
>>
>> There is a steady stream of Interests and Data going through it.
>> I have reduced the size of the CS down to 8K to see if that will
>> stop the growth but it doesn't seem to.
>>
>> This is on the Tongji node. The virtual memory size of nfd will
>> continue to grow until eventually the node will get bogged
>> down and I have to restart nfd to clear things up.
>>
>> I include below some ps samples that show the size and the change
>> in size at 5 second intervals.
>>
>> What else besides the CS would cause nfd to continue to grow?
>>
>> I should mention that I am experimenting with tcp faces to try
>> to alleviate some other network problems.
>>
>>
>> Thanks,
>> John
>>
>>
>> Tue Jan 27 04:48:22 CST 2015
>> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME
>> COMMAND
>> 4     0  5211     1  20   0 2482116 1618620 ep_pol Ssl ?        8:53
>> /usr/bin/nfd --config /etc/ndn/nfd.conf
>>
>> Tue Jan 27 04:48:27 CST 2015
>> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME
>> COMMAND
>> 4     0  5211     1  20   0 2488600 1625240 ep_pol Ssl ?        8:55
>> /usr/bin/nfd --config /etc/ndn/nfd.conf
>>
>> Tue Jan 27 04:48:32 CST 2015
>> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME
>> COMMAND
>> 4     0  5211     1  20   0 2495212 1631896 ep_pol Ssl ?        8:56
>> /usr/bin/nfd --config /etc/ndn/nfd.conf
>>
>> Tue Jan 27 04:48:37 CST 2015
>> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME
>> COMMAND
>> 4     0  5211     1  20   0 2502084 1608468 ep_pol Ssl ?        8:57
>> /usr/bin/nfd --config /etc/ndn/nfd.conf
>>
>> Tue Jan 27 04:48:42 CST 2015
>> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME
>> COMMAND
>> 4     0  5211     1  20   0 2509112 1615620 ep_pol Ssl ?        8:59
>> /usr/bin/nfd --config /etc/ndn/nfd.conf
>>
>> Tue Jan 27 04:48:47 CST 2015
>> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME
>> COMMAND
>> 4     0  5211     1  20   0 2515856 1622520 ep_pol Ssl ?        9:01
>> /usr/bin/nfd --config /etc/ndn/nfd.conf
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