dbush has asked for the wisdom of the Perl Monks concerning the following question:
I am currently doing some performance tuning and have a question regarding the output of Dprofpp. I am seeing that the majority of time (40% or more) is being taken up with many thousands of calls to main::BEGIN.
The typical output that I'm getting looks like this:
> dprofpp Total Elapsed Time = -51.0824 Seconds User+System Time = 310.7123 Seconds Exclusive Times %Time ExclSec CumulS #Calls sec/call Csec/c Name 44.8 139.2 114.05 843865 0.0000 0.0000 main::BEGIN 31.3 97.53 97.452 36407 0.0027 0.0027 DBI::st::execute 22.4 69.62 183.55 4 17.405 45.889 main::ScanBuffer Snip...
I had a super search and a look on CPAN. I found the following useful:
One further thing that might be useful are the modules that I'm using:
use strict; use DBI qw(:sql_types); use Data::Dumper;
... I mention this as I think the BEGIN block is called by AUTOLOADER when use-ing modules but I'm afraid that I'm not very clear on the details. One thought that I had was that Dprof was counting the BEGIN blocks in the imported modules but not labelling them correctly in the output. Plausible or not?
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Re: Dprof and main::BEGIN
by broquaint (Abbot) on Nov 29, 2002 at 14:25 UTC