Re: Regarding the command line option for number of threads

[Robert I. <cor...@gm...>]

Hi,

On Mon, May 10, 2010 at 10:54 AM, SAJAL BHATIA <s.b...@qu...> wrote:

>  Hi,
>
> Thanks for such a prompt response. I know it would be less powerful on VMas compared to a real Machine but I need to test it in a virtual environment
> first to make sure its suits my purpose before running it on a dedicated
> real machine. You mentioned that it will need several web-servers against
> it, can you elaborate a little on this, as to why would it require several
> web-servers against it.
>

Doubts, if a single server will withstand such a serious load.
Apache is not strong, read our FAQs, pages, ngnix, etc other servers are
more powerful,
but this is just an advise.

>
> One more thing I wanted to ask, its like I want really stress my
> static apache2 web server (possibly bring it down), can you roughly
> suggest the configurations for this as in terms of number of clients, ramp
> up, number of threads etc. I understand this question is highly network
> dependent but I just want to have a rough idea. I will give the
> specifications of the environment I am working in.
>

It depends. Start from some low number and increase.

You need a good monitoring of your server.



>
> Both source and destination are running on same machine physical machinebut as different VMs.
> Source VM has 4 virtual CPUs and 4 GB of Virtual Memory and is
> running Fedora12  (2.3.62). Target machine has 2 Virtual CPUs and 512 MB
> of Virtual Memory running Ubuntu 8.04 (server).
>
> Thanks !
>  ----
> Sajal Bhatia()
> Research Masters Student
> QUT, Brisbane
> AUSTRALIA
>
>  ------------------------------
> *From:* Robert Iakobashvili [cor...@gm...]
> *Sent:* Monday, 10 May 2010 5:01 PM
> *To:* curl-loader-devel
> *Subject:* Re: Regarding the command line option for number of threads
>
>  Hi Sajal,
>
> On Mon, May 10, 2010 at 9:53 AM, SAJAL BHATIA <s.b...@qu...> wrote:
>
>>   Hi,
>>
>> I have a questions regrading the command line option -t <number of
>> threads>. I am using a virtual machine with 4 virtual CPUs
>>
>
> We never tried it on VMs.
> Obviously, it will be less powerful than on a real linux.
>
>
>>  , so if I mention -t 4 in the command line while executing the curl
>> loader and I have mentioned 20K clients (within a specified address
>> range) in my configuration file, then will each of these 4 threads have 20Kclients or will it be 20Kclients distributed between 4 threads (or 5Kper thread). If so (later), will the distribution be like first 5Kto first thread and next 5Kto second and so forth?
>>
>
> I will be 5K users at each thread.
> I do not believe that a VM could work with 20K users.
>
> Y will also need a lot of memory. Y will also need several web-servers
> against it.
>
> Please, read the FAQ below:
> http://curl-loader.sourceforge.net/high-load-hw/index.html
>
>
>
>
>>
>> Thanks
>>
>>  ----
>> Sajal Bhatia
>> Research Masters Student
>> QUT, Brisbane
>> AUSTRALIA
>>
>>
>> ------------------------------------------------------------------------------
>>
>>
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>> curl-loader-devel mailing list
>> cur...@li...
>> https://lists.sourceforge.net/lists/listinfo/curl-loader-devel
>>
>>
>
>
> --
> Truly,
> Robert Iakobashvili, Ph.D.
> ......................................................................
> www.ghotit.com
> Assistive technology that understands you
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>
>
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>


-- 
Truly,
Robert Iakobashvili, Ph.D.
......................................................................
www.ghotit.com
Assistive technology that understands you
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