Front page | perl.perl5.porters |
Postings from June 2016
Hi! The beginners mailing list recomended for me to send this email to the p5p mailing list, since this is not a beginners issue :-) I have a script that writes to a socket, but the same script have diferent speeds on different machines. It's faster on my 5 year laptop than on my recent desktop! I profiled the script with NYTProf, on both machines and some functions are taking almost the double of the time! Example of NYTProf output: 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) (This is where it's spending the most of the time, but it's not the only function) Please note the difference in the number of calls and the difference in the time spent. Both machines have the same software version (OS, perl, Net::SSLeay and openssl) 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 5 year 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. I can also reach full speed on both machines, using other application (not in perl). 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)? Perl version: 5.22 Net::SSLeay version: 1.72 Openssl version: 1.0.2.h OS: Archlinux up to date. Laptop CPU: i7 Q 720 Desktop CPU: i5 6500T Best regards, David SantiagoThread Next