Hi James. I'm going to take a look into the perf utility. The `openssl speed` command shows that the desktop cpu has a bigger throughput than the laptop, so the write_partial in the desktop shouldn't spend that much time (in comparison to laptop).
The output of the openssl command is attached. Regards. David Santiago 2016-06-02 16:59 GMT+02:00 James Alton <jamesalton...@gmail.com>: > The laptop has better specs in terms of number of threads and memory > bandwidth. I'd also have a play around with the "perf" command if all other > software versions are the same and you want to see if the lower level CPU > usage is different. > https://perf.wiki.kernel.org/index.php/Tutorial > http://sandsoftwaresound.net/perf/perf-tut-count-hw-events/ > > James Alton > > On Thu, Jun 2, 2016 at 12:25 AM, David Emanuel da Costa Santiago > <deman...@gmail.com> wrote: >> >> >> Hello James, >> >> The CPUs are >> >> Laptop CPU: i7 Q 720 >> Desktop CPU: i5 6500T >> >> The rest of software i'm using: >> >> Perl version: 5.22 >> Net::SSLeay version: 1.72 >> Openssl version: 1.0.2.h >> OS: Archlinux up to date. >> >> >> The script is single threaded and i'm using a single >> IO::Select->select() to know when i should write or read. >> >> CPU comparison: >> http://cpuboss.com/cpus/Intel-Core-i7-720QM-vs-Intel-Core-i5-6500T >> >> >> >> Regards, >> David Santiago >> >> On Wed, 1 Jun 2016 19:20:00 -0600 >> James Alton <jamesalton...@gmail.com> wrote: >> >> > Can you please give specs on both CPUs? (The exact manufacturer and >> > model.) >> > >> > Is there a reason why you think one CPU is better than another? You >> > can have a CPU that's old and fast at single threaded jobs (say an old >> > overclocked dual core 4.0Ghz CPU) and a newer CPU that's slower at >> > single threaded jobs and faster at multi-threaded jobs (say a Core i7 >> > 3.2GHz). Is the program you're trying to run written in such a way as >> > to take advantage of multi-threading? Was the benchmark you mentioned >> > a single threaded or multi-threaded benchmark? >> > >> > Best wishes, >> > James Alton >> > >> > >> > On Wed, Jun 1, 2016 at 12:25 PM, David Emanuel da Costa Santiago < >> > deman...@gmail.com> wrote: >> > >> > > >> > > Hi! >> > > >> > > I have a script that writes to a socket, but i noticed that the same >> > > script have diferent speeds on different machines. It's faster on my >> > > 5 year laptop than on my desktop. >> > > >> > > I profiled the script on both machines and some functions are taking >> > > almost the double of the time! Example: >> > > >> > > on my laptop: >> > > >> > > Calls: 10631 >> > > Exclusive Time: 28.2s >> > > Inclusive Time: 28.2s >> > > Subroutine: Net::SSLeay::write_partial (xsub) >> > > >> > > On my desktop: >> > > Calls: 5057 >> > > Exclusive Time: 45.0s >> > > Inclusive Time: 45.0s >> > > Subroutine: Net::SSLeay::write_partial (xsub) >> > > >> > > >> > > Both machines have the same software version (OS, perl,..) and the >> > > internet connection is the same. The hardware is different. >> > > >> > > What puzzles me is that my desktop have better hardware (according >> > > to the benchmarks on the internet) than my old laptop. However i >> > > get way worse speeds on my desktop. >> > > >> > > On both machines, when the script is running the CPU is around 7%, >> > > and the RAM usage is between 50MB - 100MB. >> > > >> > > The question for one million dollar is "Why?". And how can i improve >> > > the performance of my desktop to reach the same speed as my laptop >> > > (considering that i have better hardware on my desktop)? If i >> > > recompile perl instead of using a binary package, will that make it >> > > even? >> > > >> > > >> > > >> > > Regards, >> > > David Santiago >> > > >> > > -- >> > > To unsubscribe, e-mail: beginners-unsubscr...@perl.org >> > > For additional commands, e-mail: beginners-h...@perl.org >> > > http://learn.perl.org/ >> > > >> > > >> > > >> >
openssl_speed_laptop
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openssl_speed_desktop
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