Thread: Regarding the multi threading option in curl loader
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From: SAJAL B. <s.b...@qu...> - 2010-05-18 11:41:06
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Hi, I want to know if one thread of curl loader can use more than one CPU if its been run in a machine with multi core CPU ? Regards ---- Sajal Bhatia Research Masters Student QUT, Brisbane AUSTRALIA |
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From: Robert I. <cor...@gm...> - 2010-05-18 14:20:25
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Hi, On Tue, May 18, 2010 at 2:40 PM, SAJAL BHATIA <s.b...@qu...> wrote: > Hi, > > I want to know if one thread of curl loader can use more than one CPU if > its been run in a machine with multi core CPU ? > > At a computer with N CPUs (or N-cores) run -t N or -t 2*N. Fore more details read the FAQs, README and http://curl-loader.sourceforge.net/high-load-hw/index.html -- Truly, Robert Iakobashvili, Ph.D. ...................................................................... www.ghotit.com Assistive technology that understands you ...................................................................... |
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From: SAJAL B. <s.b...@qu...> - 2010-05-19 00:20:52
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Hi, Actually my question was can one thread of Curl Loader use more than one CPU? Like I am using a dual core processor machine and when I don't specify the option -t 2 (since dual core) and monitor the CPU utilization for different number of virtual client (1K, 2K, 5K etc), the CPU utilization does not goes beyond 100%. It reaches around 98% with some 20K clients and after that the programs just crashes. So I am assuming that given my specifications of the machine and my configuration file this is some sort of upper bound. But what I wanted to know is that if with these many clients (20K) its using almost one full CPU (~ 98%) than by increasing the number of clients any further shouldn't it use the other available CPU ? Hope I am clear in my question. Regards ---- Sajal Bhatia Research Masters Student QUT, Brisbane AUSTRALIA ________________________________ From: Robert Iakobashvili [cor...@gm...] Sent: Wednesday, 19 May 2010 12:20 AM To: curl-loader-devel Subject: Re: Regarding the multi threading option in curl loader Hi, On Tue, May 18, 2010 at 2:40 PM, SAJAL BHATIA <s.b...@qu...<mailto:s.b...@qu...>> wrote: Hi, I want to know if one thread of curl loader can use more than one CPU if its been run in a machine with multi core CPU ? At a computer with N CPUs (or N-cores) run -t N or -t 2*N. Fore more details read the FAQs, README and http://curl-loader.sourceforge.net/high-load-hw/index.html -- Truly, Robert Iakobashvili, Ph.D. ...................................................................... www.ghotit.com<http://www.ghotit.com> Assistive technology that understands you ...................................................................... |
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From: Robert I. <cor...@gm...> - 2010-05-19 05:14:45
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On Wed, May 19, 2010 at 3:12 AM, SAJAL BHATIA <s.b...@qu...> wrote: > Hi, > > Actually my question was can one thread of Curl Loader use more than one > CPU? Like I am using a dual core processor machine and when I don'tspecify the option -t 2 (since dual core) and monitor the CPU utilization > for different number of virtual client (1K, 2K, 5K etc), the CPU > utilization does not goes beyond 100%. It reaches around 98% with some 20Kclients and after that the programs just crashes. > 1. Monitor the memory usage; 2. Don't use a VM, but a real linux. Forget about Windows. > So I am assuming that given my specifications of the machine and my > configuration file this is some sort of upper bound. But what I wanted to > know is that if with these many clients (20K) its using almost one full > CPU (~ 98%) than by increasing the number of clients any further shouldn't > it use the other available CPU ? > No. |
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From: SAJAL B. <s.b...@qu...> - 2010-05-21 00:29:22
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Hi, I have a couple of questions: 1. For a machine with one dual core Xeon processor and 4 GB of memory what is the theoretical maximum as the maximum number of clients (each with different IP address) ? 2. While running curl loader in the above mentioned environment (2 core processor and 4 GB of memory) why can the multi threading option be only be -t 2 or -t 4 ? Can I use something like -t 3 or -t 5 or something of this sort ? Thanks and Regards ---- Sajal Bhatia Research Masters Student QUT, Brisbane AUSTRALIA ________________________________ From: Robert Iakobashvili [cor...@gm...] Sent: Wednesday, 19 May 2010 12:20 AM To: curl-loader-devel Subject: Re: Regarding the multi threading option in curl loader Hi, On Tue, May 18, 2010 at 2:40 PM, SAJAL BHATIA <s.b...@qu...<mailto:s.b...@qu...>> wrote: Hi, I want to know if one thread of curl loader can use more than one CPU if its been run in a machine with multi core CPU ? At a computer with N CPUs (or N-cores) run -t N or -t 2*N. Fore more details read the FAQs, README and http://curl-loader.sourceforge.net/high-load-hw/index.html -- Truly, Robert Iakobashvili, Ph.D. ...................................................................... www.ghotit.com<http://www.ghotit.com> Assistive technology that understands you ...................................................................... |
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From: Robert I. <cor...@gm...> - 2010-05-21 04:40:44
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On Fri, May 21, 2010 at 3:27 AM, SAJAL BHATIA <s.b...@qu...> wrote: > Hi, > > I have a couple of questions: > > 1. For a machine with one dual core Xeon processor and 4 GB of memory > what is the theoretical maximum as the maximum number of clients (each > with different IP address) ? > 2. While running curl loader in the above mentioned environment (2 core > processor and 4 GB of memory) why can the multi threading option be only be > *-t 2* or *-t 4* ? Can I use something like -t 3 or -t 5 or something > of this sort ? > > http://curl-loader.sourceforge.net/doc/faq.html#big-load http://curl-loader.sourceforge.net/high-load-hw/index.html Truly, Robert Iakobashvili, Ph.D. ...................................................................... www.ghotit.com Assistive technology that understands you ...................................................................... |
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From: Robert I. <cor...@gm...> - 2010-05-21 04:41:42
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On Fri, May 21, 2010 at 3:27 AM, SAJAL BHATIA <s.b...@qu...> wrote: > Hi, > > I have a couple of questions: > > 1. For a machine with one dual core Xeon processor and 4 GB of memory > what is the theoretical maximum as the maximum number of clients (each > with different IP address) ? > 2. While running curl loader in the above mentioned environment (2 core > processor and 4 GB of memory) why can the multi threading option be only be > *-t 2* or *-t 4* ? Can I use something like -t 3 or -t 5 or something > of this sort ? > > http://curl-loader.sourceforge.net/doc/faq.html#big-load http://curl-loader.sourceforge.net/high-load-hw/index.html Truly, Robert Iakobashvili, Ph.D. ...................................................................... www.ghotit.com Assistive technology that understands you ...................................................................... |
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From: SAJAL B. <s.b...@qu...> - 2010-05-21 05:00:34
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Hi , I have already read this but I wanted to know if there is any theoretical maximum for my specifications. And secondly I am not sure why the documentation says that if you have N core machine then for multi-threading it should either be -t N or -t 2 N. I have done a test on a dual core machine and specified -t 6 and it worked so where does -t 2 N comes from ? Regards ---- Sajal Bhatia Research Masters Student QUT, Brisbane AUSTRALIA ________________________________________ From: Robert Iakobashvili [cor...@gm...] Sent: Friday, 21 May 2010 2:41 PM To: curl-loader-devel Subject: Re: Regarding the multi threading option in curl loader On Fri, May 21, 2010 at 3:27 AM, SAJAL BHATIA <s.b...@qu...<mailto:s.b...@qu...>> wrote: Hi, I have a couple of questions: 1. For a machine with one dual core Xeon processor and 4 GB of memory what is the theoretical maximum as the maximum number of clients (each with different IP address) ? 2. While running curl loader in the above mentioned environment (2 core processor and 4 GB of memory) why can the multi threading option be only be -t 2 or -t 4 ? Can I use something like -t 3 or -t 5 or something of this sort ? http://curl-loader.sourceforge.net/doc/faq.html#big-load http://curl-loader.sourceforge.net/high-load-hw/index.html Truly, Robert Iakobashvili, Ph.D. ...................................................................... www.ghotit.com<http://www.ghotit.com> Assistive technology that understands you ...................................................................... |
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