Carsten hates me when I "just talk", so here is some action: let's
measure cocoon's fat.
Follow me and type the following in your terminal
svn co http://svn.apache.org/repos/asf/cocoon/branches/BRANCH_2_1_X/ \
cocoon
svn co http://simile.mit.edu/repository/linotype/trunk/ linotype
export COCOON_HOME=../cocoon/
cd linotype
ant install
ant run
then point your browser at http://127.0.0.1:8888/linotype/
you should see an empty linotype running.
Now, ctrl-break the above, and do
zip -r linotype.war dist/
the resulting WAR is 12263572 bytes. How much of this is linotype?
zip -r linotype.zip dist/linotype/
results in a 129673 bytes. Cocoon has a platform overhead of 11Mb.
*compressed*
Now let's see where the things are:
cd dist
du -d1
returns
1152 ./linotype
144 ./resources
128 ./stylesheets
27472 ./WEB-INF
29000 .
so
cd WEB-INF
du -d1
returns
8 ./classes
1544 ./entities
25776 ./lib
27472 .
So, it's clear that cocoon weight is in the jars.
NOTE: the linotype build system builds cocoon from source with the most
stripped-down version as Linotype does not depend on any blocks. This is
the minimal 2.1.x cocoon possible right now.
Let's see the list of jars
cd lib
ls -AlS
(with some little hand cleaning)
2941481 jdtcore-3.0.2.jar
2730442 xalan-2.7.0.jar
1395202 cocoon-2.1.8-dev.jar
1203860 xercesImpl-2.7.1.jar
607235 rhino1.5r4-continuations-R26.jar
552263 commons-collections-3.1.jar
522143 jakarta-bcel-20040329.jar
394671 jcs-1.2.5-dev-20050313.jar
358085 log4j-1.2.12.jar
285104 commons-jxpath-1.2.jar
225375 commons-httpclient-2.0.2.jar
207723 commons-lang-2.1.jar
194205 xml-apis-1.3.02.jar
189284 util.concurrent-1.3.4.jar
131458 commons-jexl-1.0.jar
115506 excalibur-instrument-mgr-http-2.1.jar
89145 excalibur-logger-2.1.jar
86665 excalibur-xmlutil-2.1.jar
83582 avalon-logkit-2.1.jar
80572 excalibur-component-1.2.jar
78599 excalibur-sourceresolve-2.1.jar
65948 excalibur-naming-1.0.jar
60047 xml-commons-resolver-1.1.jar
59645 avalon-framework-impl-4.3.jar
57548 excalibur-instrument-mgr-impl-2.1.jar
47531 ehcache-1.1.jar
42137 excalibur-store-2.1.jar
40737 excalibur-io-1.1.jar
38015 commons-logging-1.0.4.jar
32112 avalon-framework-api-4.3.jar
30117 commons-cli-1.0.jar
28584 jakarta-regexp-1.4.jar
27833 excalibur-pool-impl-2.1.jar
21028 javacImpl-0.9.jar
20640 excalibur-instrument-mgr-api-2.1.jar
20328 excalibur-instrument-api-2.1.jar
18329 excalibur-pool-instrumented-2.1.jar
14728 excalibur-pool-api-2.1.jar
8238 excalibur-i18n-1.1.jar
3565 javacApi-0.9.jar
now, let's take a look
1) I don't use XSP nor javaflow, therefore I wouldn't need JDTcore,
nor BCEL, nor javacImpl and javacAPI, a total of several Mb.
2) I don't use the avalon instrumentation
3) I use logkit, so I don't need log4j
4) I put the latest xalan and xerces in my app server, no need to have
it here too
here is the slimmed down cocoon
1395202 cocoon-2.1.8-dev.jar
607235 rhino1.5r4-continuations-R26.jar
552263 commons-collections-3.1.jar
285104 commons-jxpath-1.2.jar
225375 commons-httpclient-2.0.2.jar
207723 commons-lang-2.1.jar
194205 xml-apis-1.3.02.jar
189284 util.concurrent-1.3.4.jar
131458 commons-jexl-1.0.jar
89145 excalibur-logger-2.1.jar
86665 excalibur-xmlutil-2.1.jar
83582 avalon-logkit-2.1.jar
80572 excalibur-component-1.2.jar
78599 excalibur-sourceresolve-2.1.jar
65948 excalibur-naming-1.0.jar
60047 xml-commons-resolver-1.1.jar
59645 avalon-framework-impl-4.3.jar
47531 ehcache-1.1.jar
42137 excalibur-store-2.1.jar
40737 excalibur-io-1.1.jar
38015 commons-logging-1.0.4.jar
32112 avalon-framework-api-4.3.jar
30117 commons-cli-1.0.jar
28584 jakarta-regexp-1.4.jar
27833 excalibur-pool-impl-2.1.jar
18329 excalibur-pool-instrumented-2.1.jar
14728 excalibur-pool-api-2.1.jar
8238 excalibur-i18n-1.1.jar
which now yields a war file of 4Mb, still a lot but much better than before.
Anyway, I know some of this has been discussed at lenght on the mail
list already, so I tried cocoon 2.2.x to see if things are improving,
let's redo the little dance:
svn co http://svn.apache.org/repos/asf/cocoon/trunk/ cocoon
svn co http://simile.mit.edu/repository/linotype/trunk/ linotype
export COCOON_HOME=../cocoon/
cd linotype
ant war
results in a 11516061 file, which is better than before, well, let's see
if it works
ant run
does cocoon work? [open http://127.0.0.1:8888/] yes it does.
does linotype work? [open http://127.0.0.1:8888/linotype/] nope
"Type 'jx' does not exist for 'map:transform' at", let's see the sitemap
<map:components>
<!-- include some additional components -->
<map:include dir="context://WEB-INF/sitemap-additions"
pattern="*.xconf"/>
</map:components>
ah, ok, cool, now the components are located somewhere else, let's see
the sitemap-additions
<map:components xmlns:map="http://apache.org/cocoon/sitemap/1.0";>
<map:generators>
<map:generator label="content"
logger="sitemap.generator.mp3directory" name="mp3directory"
src="org.apache.cocoon.generation.MP3DirectoryGenerator"/>
</map:generators>
<map:transformers>
<map:transformer logger="sitemap.transformer.jpath" name="jpath"
src="org.apache.cocoon.transformation.JPathTransformer"/>
<map:transformer logger="sitemap.transformer.filter" name="filter"
src="org.apache.cocoon.transformation.FilterTransformer"/>
</map:transformers>
<map:serializers>
<map:serializer logger="sitemap.serializer.vrml"
mime-type="model/vrml" name="vrml"
src="org.apache.cocoon.serialization.TextSerializer"/>
</map:serializers>
</map:components>
ehmmm, all right, ... but where did the standard sitemap components go?
[sound of stefano searching] oh, here they are
context://WEB-INF/xconf/cocoon-core-sitemap.xconf
but the main sitemap doesn't link them... didn't we agree not to have
black magic in the sitemaps?
Not sure I don't like this, reduces discoverability a great deal. But
anyway, let's look for the "jx" transformer... hmmm, gone, all right,
it's not that core anyway... hmmm, oh, here it is, it's the 'template'
block, that wasn't there in 2.1.x, let's add this to the build system.
So, let's add -Dinclude.block.template=true when invoking ant....
run.... nope.
So, -Dinclude.block.template=true does not overwrite
-Dexclude.blocks.all=true. Boy, that's lame.
The ability to exclude or include all blocks is a great one, but if
individual selections don't override the default, it's a problem.
Anyway, that can be fixed.
So, here is the diff between the dist-2.1.x/WEB-INF/lib and the
dist-2.2.x/WEB-INF/lib with no blocks enabled
Only in dist-2.1.x/WEB-INF/lib/: cocoon-2.1.8-dev.jar
Only in dist-2.1.x/WEB-INF/lib/: excalibur-component-1.2.jar
Only in dist-2.1.x/WEB-INF/lib/: excalibur-instrument-mgr-api-2.1.jar
Only in dist-2.1.x/WEB-INF/lib/: excalibur-instrument-mgr-http-2.1.jar
Only in dist-2.1.x/WEB-INF/lib/: excalibur-instrument-mgr-impl-2.1.jar
Only in dist-2.1.x/WEB-INF/lib/: javacApi-0.9.jar
Only in dist-2.1.x/WEB-INF/lib/: javacImpl-0.9.jar
Only in dist-2.1.x/WEB-INF/lib/: jdtcore-3.0.2.jar
Only in dist-2.1.x/WEB-INF/lib/: rhino1.5r4-continuations-R26.jar
Only in dist-2.2.x/WEB-INF/lib/: cocoon-2.2.0-dev.jar
Only in dist-2.2.x/WEB-INF/lib/: commons-javaflow-r306555.jar
Only in dist-2.2.x/WEB-INF/lib/: commons-jci-r306555.jar
Only in dist-2.2.x/WEB-INF/lib/: knopflerfish-cm_api-1.0.0.jar
Only in dist-2.2.x/WEB-INF/lib/: knopflerfish-console_all-1.0.0.jar
Only in dist-2.2.x/WEB-INF/lib/: knopflerfish-consoletty-1.0.0.jar
Only in dist-2.2.x/WEB-INF/lib/: knopflerfish-framework-1.3.3.jar
Only in dist-2.2.x/WEB-INF/lib/: knopflerfish-frameworkcommands-1.0.0.jar
Only in dist-2.2.x/WEB-INF/lib/: knopflerfish-http_all-1.1.0.jar
Only in dist-2.2.x/WEB-INF/lib/: knopflerfish-log_all-1.0.0.jar
Only in dist-2.2.x/WEB-INF/lib/: knopflerfish-logcommands-1.0.0.jar
Only in dist-2.2.x/WEB-INF/lib/: rhino-1.6R2.jar
Only in dist-2.2.x/WEB-INF/lib/: xmlbeans-1.0.3.jar
So, let's see how much I can strip it down and keep the welcome page
show up:
1) let's remove knopflerfish -> works
2) let's remove xalan, xerces and the xml api -> works
3) let's remove javaflow -> works
4) let's remove log4j -> works
5) let's remove bcel -> works
6) let's remove xmlbeans -> works
7) let's remove jcs -> works
so, how much are we now? 4Mb the total war file. Not so bad.
Where can we improve? well, cocoon.jar is about 1Mb, compressed, that
seems like a lot of stuff, let's see what's inside
cd dist/WEB-INF/lib
unzip cocoon-2.2.0.jar
cd org/apache/cocoon
du -d1 | sort -rn
3936 ./components
976 ./transformation
688 ./xml
664 ./core
632 ./environment
520 ./util
472 ./generation
360 ./acting
312 ./matching
272 ./sitemap
192 ./selection
192 ./bean
160 ./servlet
144 ./serialization
128 ./i18n
80 ./reading
72 ./caching
24 ./configuration
cd components
du -d1 | sort -rn
1040 ./treeprocessor
728 ./modules
528 ./flow
352 ./source
240 ./xpointer
208 ./pipeline
144 ./thread
136 ./store
112 ./blocks
88 ./sax
72 ./notification
72 ./classloader
56 ./crawler
24 ./persistence
24 ./fam
24 ./container
16 ./resolver
hmmm, not a lot to remove, treeprocessor + flow + transformation occupy
pretty much all of it.
With a serious diet and an improved build system, cocoon could lose half
of its weight and generate webapps that are much more friendly for
smaller sites or for inclusion in places where size is an issue.
But even when size is not an issue, having smaller webapps helps in
making users perceive what core functionality the cocoon framework gives
them and what is add-on, something that we were never very good at
marketing.
Hope this helps.
--
Stefano.
