[ndnSIM] ndnSIM Digest, Vol 65, Issue 17

[Ertugrul DOGRULUK]

Recently I published a scenario on git about content privacy.  you may check it out by searching my git name ertugd
Kindly Regards
Ertugrul Dogruluk
PhD Candidate
Centro Algoritmi/ University of Minho-PORTUGAL


On 12 Apr 2018, at 20:00, ndnsim-request at lists.cs.ucla.edu<mailto:ndnsim-request at lists.cs.ucla.edu> wrote:

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Today's Topics:

  1. Re: Request for collaborations on NDN Security and Privacy
     using ndnSIM (Lixia Zhang)
  2. Re: Any experience on profiling or dealing with memory
     leakage issues (Xinyu Ma)


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Message: 1
Date: Thu, 12 Apr 2018 08:53:38 -0700
From: Lixia Zhang <lixia at cs.ucla.edu>
To: Mohibi Hussain <mohibihussain1 at gmail.com>
Cc: ndnsim <ndnsim at lists.cs.ucla.edu>, Zhiyi Zhang <zhiyi at cs.ucla.edu>
Subject: Re: [ndnSIM] Request for collaborations on NDN Security and
Privacy using ndnSIM
Message-ID: <CD7C9A57-D32A-4DDA-874E-77D54066FE24 at cs.ucla.edu>
Content-Type: text/plain; charset="us-ascii"

to my limited knowledge, I have not heard people using ndnSIM to research on NDN security or privacy, other than DDoS.
Maybe you can contact Zhiyi Zhang <zhiyi at cs.ucla.edu> directly to explore collaboration (he focuses on NDN security)

On Apr 12, 2018, at 7:22 AM, Mohibi Hussain <mohibihussain1 at gmail.com> wrote:

Dear ndnSIM users,

I am a researcher at University of Cambridge and I am looking for opportunities to collaborate on NDN security and privacy topics such as DDoS, content poisoning, trust etc., and open to other topics as well. ndnSIM users interested in collaboration please email me at mohibi.hussain at cl.cam.ac.uk <mailto:mohibi.hussain at cl.cam.ac.uk>.

Thanking in anticipation,
warm regards,
Mohibi
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Message: 2
Date: Fri, 13 Apr 2018 02:14:50 +0900
From: Xinyu Ma <bitmxy at gmail.com>
To: Carl Zu <carlzu8 at gmail.com>
Cc: ndnsim at lists.cs.ucla.edu
Subject: Re: [ndnSIM] Any experience on profiling or dealing with
memory leakage issues
Message-ID:
<CAHdyAHkU6MbyE3t4WZnnYfy_jTtbG7BWge6NH7HZVd9kpUgbYw at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hello, Carl.

Yes, I have some ideas.
I just overloaded the operator new and delete to record every memory
allocation and releasing.
I assumed the memory allocation and releasing will keep a balance after a
start-up time. So I just record all memory blocks allocated in a time
interval [a,a + t1] but not released in [a, a + t1 + t2], where t2 is long
enough that no cache entries or PIT entries created in [a, a+t1] will
remain. The recored blocks are thought to be "leaked", though there may be
references point to it.
But it's a bit hard to find who allocated a specified memory block. I used
to do it manually and it took me a lot of time. Recently I found I could
use backtrace function to get the call stack and use scripts to convert
address to line number. I'm writing it now. If you have interests in this
trick, I can publish it to GitHub when it's finished before long.

Xinyu Ma.

2018-04-12 21:21 GMT+09:00 Carl Zu <carlzu8 at gmail.com>:

Dear all,

Does anybody have an experience of using a profiler with ndnSIM? I am
having a memory leakage issue, which leads to having different errors per
run. But apparently, the problem stems from a memory leakage issue.

Any guidance appreciated.

Thanks and regards,
C

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