Benchmarking Local Hostname Lookup Methods
Benchmarking Local Hostname Lookups
The Sys::Hostname module (shipped with perl!) provides a hostname() function. How much better is it then `hostname`?
use Sys::Hostname; |
my $host = hostname(); | my $host = `hostname`;
As you can see, the hostname system call is simplier, and we don't have to load a module
I quickly made this program lets see the results!
module method: 91 wallclock secs (31.64 usr + 0.18 sys = 31.82 CPU) @ 690179.82/s (n=21961522)
system method: 218 wallclock secs ( 7.33 usr 22.78 sys + 36.22 cusr 103.38 csys = 169.71 CPU) @ 4896.51/s (n=147434)
The Module method WINS it was able to run 140 more times then the system call, and in less then half the time using 5x less CPU!
System specs: Perl 5.8.8 Single proc, fedora 8