Devel::NYTProf
Chia-liang Kao
clkao@clkao.org
Shibuya.pm#11

自己
介紹

高
嘉良

台湾
人

日本語

日本語
不會

Perl
黑客

Hate



慢




“Always profile
before optimize”

Devel::DProf

% perl -d:DProf foo.pl
% dprofpp

% dprofpp
Total Elapsed Time = 2.563600 Seconds
User+System Time = 0.703600 Seconds
Exclusive Times
%Time ExclSec CumulS #Calls sec/call Csec/c Name
6.96 0.049 0.067 15 0.0033 0.0045 Prophet::Replica::sqlite::BEGIN
6.82 0.048 0.049 41 0.0012 0.0012 Mouse::Meta::Method::Constructor::
generate_constructor_method_inline
5.40 0.038 0.038 464 0.0001 0.0001 Params::Validate::_validate
4.97 0.035 0.030 86 0.0004 0.0003 Mouse::Meta::Method::Accessor::gen
erate_accessor_method_inline
4.69 0.033 0.043 555 0.0001 0.0001 Prophet::Replica::sqlite::get_reco
rd_props
4.12 0.029 0.029 166 0.0002 0.0002 DBI::st::fetchall_arrayref
3.84 0.027 0.035 412 0.0001 0.0001 DateTime::Locale::_registered_id
3.55 0.025 0.077 90 0.0003 0.0009 Mouse::Meta::Attribute::create
2.84 0.020 0.020 6 0.0033 0.0033 Mouse::Meta::Attribute::BEGIN
2.84 0.020 0.154 1 0.0199 0.1537 App::SD::Util::BEGIN
2.56 0.018 0.018 501 0.0000 0.0000 Scalar::Util::blessed
2.27 0.016 0.055 449 0.0000 0.0001 DateTime::Locale::_register
1.42 0.010 0.087 4454 0.0000 0.0000 Mouse::Meta::Method::Accessor::__A
NON__
1.42 0.010 0.010 1 0.0100 0.0100 Config::TIEHASH
1.42 0.010 0.000 41 0.0002 0.0000 Mouse::Meta::Method::Constructor::
_generate_processattrs

Sub
Level

% perl -d:DProf foo.pl

% perl -d:DProf foo.pl
Segmentation fault.

Devel::NYTProf
by Tim Bunce

DBI
作者

Line
Level

block
Level

使用
方法

% perl -d:NYTProf foo.pl
% nytprofhtml

Line Level

Line Level

Line Level

Line Level

Line Level

Even works
with eval!

Use it!

Last
Weekend

OSDC.TW
台北

小籠包

Rasmus
showed
nice PHP
calltree

I want
that for
Perl!

Calltree?

So here
you go

(Never make
a Perl
hacker
jealous)

kcachegrind

% perl -d:NYTProf foo.pl
% nytprofcg
% kcachegrind nytprof

NYTProf is
more than
not
crashing

DB::enable_profile();
.....
DB::disable_profile();

Per-request
Profiling
for Jifty

Many more
goodies
from
NYTProf

cpan Devel::NYTProf
http://code.google.com/p/perl-devel-nytprof/

謝謝!