[zeromq-dev] Which language binding/API to use such that the process uses least RAM

Thu Apr 4 23:52:58 CEST 2013

Hello,

Thank you for your helpful replies.

One final query- can i access zeromq to send messages from shell scripts (Linux) and Command Line scripts(Windows)? That is what I would prefer to do- however I dont know if its possible.

Yours sincerely,
Arvind,
Creatrix IT Soft.

From: A. Mark 
Sent: Friday, April 5, 2013 12:19 AM
To: ZeroMQ development list 
Subject: Re: [zeromq-dev] Which language binding/API to use such that the process uses least RAM

ZMQ's memory utilization while messaging will - among other things - depend on the zmq socket options and how you implement messaging. It sounds like you are going to be exchanging small messages and not transferring very large chunks, you should be able to reduce memory usage of zmq. My first guess is tuning SND/RCVBUF SND/RCVHWM  zmq socket options and using zmq_recv/zmq_send calls if you are very concerned and want the lowest memory usage.

On Thu, Apr 4, 2013 at 9:25 AM, Arvind Creatrix IT Soft <arvind at creatrixitsoft.com> wrote:

  Hi

  I am building a platform for deploying apps to cloud- I wish to use a mechanism for monitoring metrics of servers running apps for which I am considering zeromq- but one concern is the amount of RAM/CPU utilised by the process that sends data to monitoring server via ZeroMQ-  since the machine (where this process is running) itself may have as low as 512MB RAM(or less) and the client’s app will be running on this machine as well. Hence I want the process that sends messages via ZeroMQ to use as less RAM/CPU as possible.

  Yours sincerely,
  Arvind,
  Creatrix IT Soft.

  From: Sean Ochoa 
  Sent: Thursday, April 4, 2013 9:24 PM
  To: ZeroMQ development list 
  Subject: Re: [zeromq-dev] Which language binding/API to use such that the process uses least RAM

  Arvind, 

  RAM/CPU usage will be consistently low using ZeroMQ using either java or python (both can run on linux & windows).  

  The memory footprint of the process really depends on the implementation.  I know that, using python, I can serialize and compress a dictionary (aka "unordered map") using pickle (object serializer) and zlib (for keeping payload size small) and send it over the wire via ZeroMQ without any sort of memory or CPU concerns.  

  However, I don't think that this is the right way to do this kind of performance monitoring.  Both Windoze and Linux variants have tools or mechanisms built-in to the OS to do performance monitoring on a process.  For windows, you would want to use WMI.  For Linux, you'd want to use command line tools that are available.

  What's the real problem you're trying to solve here?

  -- Sean

  On Wed, Apr 3, 2013 at 2:11 PM, Arvind Creatrix IT Soft <arvind at creatrixitsoft.com> wrote:

    Hi

    I wish to create a simple process that basically measures the CPU/RAM utilisated by a running process on that server, and sends it via ZeroMQ.
    With the multiple language bindings available for ZeroMQ, I wish to use that language(for utilising ZeroMQ)- that uses the least possible RAM. And ideally I can compile/create the ready to run process on my machine, and then run it on any OS(including Linux—> Ubuntu/CentOS and Windows) and for different types of RAM/CPU configurations. I understand that ZeroMQ core will have to be installed/made available for use by my process.

    Any insights intot 
    Yours sincerely,
    Arvind,
    Creatrix IT Soft.

    From: Felipe Cruz 
    Sent: Thursday, April 4, 2013 2:34 AM
    To: ZeroMQ development list 
    Subject: Re: [zeromq-dev] czmq - Timer returning -1 don't finish zloop

    I got tricked by an old revision.. this is already fixed: https://github.com/zeromq/czmq/issues/113 

    regards,

    2013/4/3 Pieter Hintjens <ph at imatix.com>

      On Mon, Apr 1, 2013 at 6:38 PM, Felipe Cruz <felipecruz at loogica.net> wrote:

      > This is not entirely true.. Timers returning -1 don't make the loop to
      > return. I have a small patch for this issue but I'm not sure if we need a
      > minor fix in the docs or if we really want what's in the docs.

      I think we want what's in the docs, it's sensible that when an event
      handler, of any sort, signals an error, that the reactor ends.

      -Pieter
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    -- 

    Felipe Cruz
    http://about.me/felipecruz

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  -- 
  Sean | (206) 962-7954 

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