Zope low level stats per request.
Project description
Introduction
This is Enfold Systems’ low level ZODB stats tool [1].
Installation
Inside Plone
To install in Plone, add collective.stats to your plone.recipe.zope2instance section’s eggs parameter e.g.:
[instance]
recipe = plone.recipe.zope2instance
eggs =
Plone
…
collective.stats
Plone 3.3 usage requires appending [oldzope] to collective.stats:
[instance]
recipe = plone.recipe.zope2instance
eggs =
Plone
…
collective.stats [oldzope]
Plone 3.3 on Windows requires a Python 2.4 compilation of the psutil package which can be found at http://dist.enfoldsystems.com/simple
Run buildout and run Plone in the foreground, and you will see output like this:
2011-09-22 22:25:30 INFO Zope Ready to handle requests 2011-09-22 22:25:50 INFO collective.stats | 0.0021 0.0014 0.0018 0.0004 0.0000 0000 0000 0000 | GET:/favicon.ico | t: 0.0000, t_c: 0.0000, t_nc: 0.0000 | RSS: 116708 - 116744 2011-09-22 22:25:55 INFO collective.stats | 0.1783 0.0021 0.1779 0.0004 0.0000 0000 0000 0000 | GET:/manage_main | t: 0.0000, t_c: 0.0000, t_nc: 0.0000 | RSS: 116756 - 116948 2011-09-22 22:25:55 INFO collective.stats | 0.0020 0.0013 0.0017 0.0004 0.0000 0000 0000 0000 | GET:/misc_/OFSP/dtmlmethod.gif | t: 0.0000, t_c: 0.0000, t_nc: 0.0000 | RSS: 117076 - 117076 2011-09-22 22:25:55 INFO collective.stats | 0.0018 0.0012 0.0016 0.0004 0.0000 0000 0000 0000 | GET:/misc_/TemporaryFolder/tempfolder.gif | t: 0.0000, t_c: 0.0000, t_nc: 0.0000 | RSS: 117076 - 117076 2011-09-22 22:25:55 INFO collective.stats | 0.0021 0.0013 0.0018 0.0004 0.0000 0000 0000 0000 | GET:/misc_/SiteAccess/VirtualHostMonster.gif | t: 0.0000, t_c: 0.0000, t_nc: 0.0000 | RSS: 117076 - 117076 2011-09-22 22:25:58 INFO collective.stats | 0.3960 0.0015 0.3957 0.0004 0.0000 0000 0000 0000 | GET:/@@plone-addsite | t: 0.0000, t_c: 0.0000, t_nc: 0.0000 | RSS: 117076 - 126352 2011-09-22 22:25:58 INFO collective.stats | 0.0020 0.0014 0.0017 0.0004 0.0000 0000 0000 0000 | GET:/++resource++plone-admin-ui.css | t: 0.0000, t_c: 0.0000, t_nc: 0.0000 | RSS: 126352 - 126356 2011-09-22 22:25:58 INFO collective.stats | 0.0014 0.0009 0.0012 0.0004 0.0000 0000 0000 0000 | GET:/++resource++plone-logo.png | t: 0.0000, t_c: 0.0000, t_nc: 0.0000 | RSS: 126356 - 126360
If you want to use this product in a production environment, and you don’t want your logs to fill up, you can remove logging by providing an environment variable COLLECTIVE_STATS_DISABLE_LOG. The only value that will cause collective.stats not to log, is the number 1:
environment-vars =
COLLECTIVE_STATS_DISABLE_LOG 1
You still get the X-Stats response header.
Outside Plone
To use it outside of Plone, after configuring collective.stats to be used inside Plone (as described above) configure a zc.recipe.egg section in your buildout like so:
[zopepy]
recipe = zc.recipe.egg
eggs = ${instance:eggs}
interpreter = zopepy
scripts = collective-stats
Run buildout, and this will create a script called collective-stats you can use to parse Plone logs and produce a .csv file:
$ bin/collective-stats var/log/instance.log … 1.3170 0.0196 1.3139 0.0004 0.0000 0000 0000 0003 | GET:/Plone 0.0283 0.0274 0.0278 0.0004 0.0000 0000 0000 0000 | GET:/Plone/portal_css/Sunburst Theme/member.css 0.0153 0.0147 0.0150 0.0003 0.0000 0000 0000 0000 | GET:/Plone/portal_css/Sunburst Theme/forms.css 0.0176 0.0167 0.0171 0.0003 0.0000 0000 0000 0000 | GET:/Plone/portal_css/Sunburst Theme/ploneKss.css 0.0704 0.0694 0.0699 0.0003 0.0000 0000 0000 0000 | GET:/Plone/portal_css/Sunburst Theme/++resource++plone.app.discussion.stylesheets/discussion.css 0.0096 0.0090 0.0093 0.0003 0.0000 0000 0000 0000 | GET:/Plone/portal_css/Sunburst Theme/print.css 0.0067 0.0061 0.0064 0.0003 0.0000 0000 0000 0000 | GET:/Plone/portal_css/Sunburst Theme/mobile.css 0.0920 0.0709 0.0915 0.0003 0.0000 0000 0000 0000 | GET:/Plone/portal_css/Sunburst Theme/++resource++tinymce.stylesheets/tinymce.css 0.0319 0.0313 0.0316 0.0003 0.0034 0004 0000 0000 | GET:/Plone/portal_css/Sunburst Theme/ploneCustom.css 0.0078 0.0069 0.0075 0.0003 0.0000 0000 0000 0000 | GET:/Plone/portal_kss/Sunburst Theme/plone.kss
Check the current directory and you should see a stats.csv file:
$ ls -1 … lib/ parts/ setup.py src/ stats.csv var/
Take a peek at the top of that file to see the column headers:
$ head stats.csv url,time,t traverse,t commit,t transchain,setstate,total,total cached,modified,rss before,rss after GET:/favicon.ico,0.0021,0.0014,0.0018,0.0000,0000,0000,0000,116708,116744 GET:/manage_main,0.1783,0.0021,0.1779,0.0000,0000,0000,0000,116756,116948 GET:/manage_page_style.css,0.0110,0.0014,0.0108,0.0000,0000,0000,0000,116948,117012 GET:/p_/ltab,0.0023,0.0008,0.0021,0.0000,0000,0000,0000,117020,117032 GET:/p_/sp,0.0100,0.0054,0.0099,0.0039,0018,0004,0000,116992,117032 GET:/p_/rtab,0.0020,0.0012,0.0018,0.0000,0000,0000,0000,117032,117032 GET:/misc_/OFSP/Folder_icon.gif,0.0018,0.0012,0.0016,0.0000,0000,0000,0000,117032,117032 GET:/p_/ControlPanel_icon,0.0017,0.0009,0.0015,0.0000,0000,0000,0000,117036,117036 GET:/misc_/OFSP/UserFolder_icon.gif,0.0017,0.0012,0.0015,0.0000,0000,0000,0000,117036,117036
Documentation
Column header details:
Header |
Detail |
time |
Total time inside publisher |
t traverse |
This is time when zope publisher gets publishable object |
t commit |
Time on transaction.commit() |
t transchain |
Time in plone.transformchain.applyTransform |
setstate |
Total time inside Connection.setstate |
total |
Total zodb object loads |
total cached |
Total loads from cache |
modified |
Total modified objects |
rss before |
RAM usage before request |
rss after |
RAM usage after request |
An Example
If you enable collective.stats to emit stats in response headers you will see a response line such as:
X-Stats:4.5556 0.0232 1.2539 0.6334 9266 1244 0000
Deciphering:
4.555 - (time) is total time in Zope Publisher
0.023 - (t traverse) is after traverse time (callable object inside Publisher)
time from BEGINNING of request to after TRAVERSE time.
1.253 - (t commit) is before commit() (we have a complete RESPONSE object)
time from BEGINGING of request to before COMMIT
0.6334 - (setstate) total time in __setstate__ (time of ZODB spent unghostifying # of LOAD objects)
9266 - (total) total number of LOADS
1244 - (total cached) total number of HOT LOADS (cache hits in ZODB)
0000 - (modified) total number of MODIFIED objects.
Summary
t_time - t_commit = total time to commit() (time executed in IPubBeforeCommit) If you are using plone.app.caching or plone.app.theming both of which use commit events; so depending how collective.stats gets registered - its possible those are not being captured.
In this example 3.3 seconds is “lost” in commit. In this particular case it was due to unoptimized plone.app.theming / diazo rules file.
Enjoy!
Changelog
1.1.0 (2022-08-25)
Add support for Python 3 [mamico]
1.0.2 (2015-12-01)
Provide a way to still have the functionality, without logging [frapell]
1.0.1 (2015-06-23)
Fixes AttributeError with thread._local, adapt to new psutil API. Ref: http://stackoverflow.com/questions/20640679 [thet]
1.0.0 (2012-03-29)
Add stats info for plone.transformchain applyTransform [fafhrd91]
Add stats info to failure requests. [fafhrd91]
0.9.1 (2011-12-01)
Add output header detail to README [aclark]
Fix typo [jean]
0.9.0 (2011-09-22)
Fix docs [aclark]
0.8 (2011-09-22)
Fix docs [aclark]
0.7 (2011-09-22)
Initial import from enfold.stats 0.7 tarball [aclark]
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