rails中使用bleak_house

Stage1)使用bleak_house

geminstallbleak_house

在environment.rb中加上：

require'bleak_house'

启动

RAILS_ENV=productionBLEAK_HOUSE=trueruby-bleak-house./script/server

错误

/usr/local/ruby2/lib/ruby/gems/1.8/gems/bleak_house-3.6/lib/bleak_house/rails/dispatcher.rb:8:undefinedlocalvariableormethod`callbacks'forDispatcher:Class(NameError)
from/usr/local/ruby2/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`gem_original_require'
from/usr/local/ruby2/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`require'

解决方法：

作者如是说 ：

Yeah,onmyblogImentionedthatyouneedtostickwith-v3.5.1ifyoustilluseRails1.2x.

源文档：https://rubyforge.org/forum/forum.php?thread_id=20904&forum_id=13983

要么升级rails至2.0,要么降级使用bleak_house 3.5.1

我选择了后者，因为我发现我升级rails后，目前的程序有很多错误

请求一个action,你会看到

**bleak_house:enabled(log/bleak_house_production.dump)

看来 bleak_house在动作了并产生了日志

多请求几个，然后

bleakpath/to/log/bleak_house_production.dump

否则回提示

Notenoughframesforaccurateresults.Pleaserecordatleast45frames.

看到分析结果

..........................
usermanage__friend/index/GETleakedperrequest(2):
379.5String
63.5Symbol
6.0Array
5.5Hash
3.0Class
2.5Module
2.0ActiveRecord::ConnectionAdapters::MysqlColumn
1.5Usermanage::FriendHelper
1.0ApplicationHelper
1.0Set
1.0Time
1.0#<Module:0xb76e1b14>
1.0#<Module:0xb76e25c8>
1.0#<Module:0xb7766e04>
0.5Usermanage::FriendBlockHelper
0.5Usermanage::MessageHelper
0.5Usermanage::FriendDirHelper
.............................

Stage2) 更换启动方式

总不能使用./script/server来启动rails吧，这与我们目前mongrel cluster的启动方式不一致，为了使bleak_house适用我们目前的生产环境，于是：

修改environment.rb

ENV['BLEAK_HOUSE']='true'
ENV['INTERVAL']='5'
require'bleak_house'

直接启动会报如下错误，典型是因为你没使用bleak_house发布的带patch的ruby版本即（ruby-bleak-house），

/usr/local/ruby2/bin/ruby:symbollookuperror:/usr/local/ruby2/lib/ruby/gems/1.8/gems/bleak_house-3.5.1/ext/bleak_house/logger/snapshot.so:undefinedsymbol:rb_gc_heap_slots

让我们参考下面一段话来得到答案：

Mattsays(May06,2007):
Isitpossibletomonitoramongrel/railsprocessthisway—orjustwebrick/rails?
WhenIusethesuppliedstartingcommand,Iwindupwitha‘normal’rubyprocess,notaruby-bleak-houseprocess.
IsupposeIcouldsymlinkmy/usr/local/bin/rubytomyruby-bleak-house.
evansays(June22,2007):
Therearevariouswaysyoucanmanuallystarttheserver,butthesymlinkistheeasiest.TheBleakHousebinaryisjustasreliableasregularRuby.

源文档 <http://blog.evanweaver.com/articles/2007/05/06/leak-proof-direct-heap-instrumentation-for-bleak_house/>

于是采用

ln -s ruby-bleak-house ruby

Ok

Stage3) 漂亮的图？？？

日志随着点击不断增长，你也可以看到文字输出，但是图呢？？

作者说了下面的话：

Question#2
Wereallylikethegraphing,isitcomingbackever?Itseemseveninyour"Letmehityouwithsomeknowledge"postthatitwasfarfastertospottheleakwithgraphs.Isthereawaytohackitonto3.7?

>Question2

DunnoinmyownworkIthoughtthegraphswerelessusefulthanthetextoutput,soIdroppedthem.IfsomeonewantedtoworkonrestoringthemIwouldacceptapatch(forexamplebleak--graph)tooptionallyhavegraphstoo.

源文档 <https://rubyforge.org/forum/forum.php?thread_id=21064&forum_id=13983>

Hey,Ichangedmymind.Version3.7restorescompatibilitywithRails1.2.6.

源文档 <http://rubyforge.org/forum/forum.php?thread_id=20904&forum_id=13983>

改用v 3.7,仍然不知道如何使用图，让我拭目以待作者更新的版本