In view of the ongoing effort to refine dhis2 into the lean and mean
machine which we know is trying to break out inside of it, and also as
part of my continuing exploration of what exactly is going on, I've
done a bit of an analysis of the jars packaged inside the dhis.war.
(I've got these in a spreadsheet - should put them on the wiki or
somewhere if only I knew how.)
Listed in order of size we have:
name size cumulative
wstx-api-2.9.jar 1443 1443
acegi-security-tiger-1.0.2.jar 3091 4534
dhis-support-transaction-2.0.1-SNAPSHOT.jar 3653 8187
aopalliance-1.0.jar 4467 12654
dhis-i18n-translationstore-hibernate-2.0.1-SNAPSHOT.jar 6836 19490
dhis-i18n-upgrader-2.0.1-SNAPSHOT.jar 7181 26671
jsr107cache-1.0.jar 8277 34948
dhis-support-external-2.0.1-SNAPSHOT.jar 9416 44364
dhis-useradminandsecurity-2.0.1-SNAPSHOT.jar 9814 54178
staxwax-1.0.4.jar 10956 65134
dhis-i18n-static-2.0.1-SNAPSHOT.jar 12143 77277
dhis.jar 13419 90696
geronimo-spec-jta-1.0-M1.jar 13473 104169
dhis-i18n-db-2.0.1-SNAPSHOT.jar 15162 119331
dhis-service-user-hibernate-2.0.1-SNAPSHOT.jar 15300 134631
asm-attrs-1.5.3.jar 16757 151388
dhis-options-2.0.1-SNAPSHOT.jar 18344 169732
cave-process-1.0.3.jar 19408 189140
dhis-support-hibernate-2.0.1-SNAPSHOT.jar 20773 209913
dhis-service-organisationunit-2.0.1-SNAPSHOT.jar 22173 232086
dhis-service-administration-2.0.1-SNAPSHOT.jar 24072 256158
xpp3_min-1.1.4c.jar 24956 281114
asm-1.5.3.jar 26361 307475
stax-api-1.0.1.jar 26514 333989
commons-email-1.1.jar 30651 364640
commons-fileupload-1.1.1.jar 31909 396549
dhis-web-dashboard-integration.jar 33002 429551
dhis-support-webwork-2.0.1-SNAPSHOT.jar 34793 464344
dhis-web-maintenance-dataadmin.jar 36180 500524
dhis-web-maintenance-settings.jar 36714 537238
commons-logging-api-1.1.jar 44598 581836
commons-codec-1.3.jar 46725 628561
dhis-support-system-2.0.1-SNAPSHOT.jar 51125 679686
commons-logging-1.1.jar 52915 732601
jep-2.24.jar 56755 789356
commons-io-1.1.jar 61562 850918
dhis-service-datamart-default-2.0.1-SNAPSHOT.jar 62188 913106
activation-1.1.jar 62983 976089
oro-2.0.8.jar 65261 1041350
dhis-web-validationrule.jar 65645 1106995
dhis-web-maintenance-user.jar 73276 1180271
dhis-service-reporting-2.0.1-SNAPSHOT.jar 76962 1257233
dhis-web-datamart.jar 77406 1334639
ibatis2-common-2.1.7.597.jar 85038 1419677
velocity-tools-1.2.jar 88194 1507871
dhis-web-maintenance-dataset.jar 90226 1598097
oscore-2.2.4.jar 91078 1689175
xpp3-1.1.3.3.jar 93395 1782570
servlet-api-2.4.jar 97693 1880263
dhis-service-jdbc-2.0.1-SNAPSHOT.jar 101799 1982062
dhis-web-maintenance-organisationunit.jar 104568 2086630
xml-apis-1.0.b2.jar 109318 2195948
rife-continuations-0.0.2.jar 116956 2312904
dhis-service-core-2.0.1-SNAPSHOT.jar 126194 2439098
commons-validator-1.3.1.jar 138956 2578054
commons-digester-1.7.jar 139966 2718020
dhis-web-dataentry.jar 144245 2862265
junit-4.4.jar 161477 3023742
ognl-2.6.9.jar 167958 3191700
ognl-2.6.11.jar 168081 3359781
stax2-api-3.0.1.jar 179977 3539758
commons-beanutils-1.7.0.jar 188671 3728429
xml-apis-1.3.02.jar 194205 3922634
commons-lang-2.1.jar 207723 4130357
dhis-api-2.0.1-SNAPSHOT.jar 213598 4343955
dhis-web-commons-2.0.1-SNAPSHOT.jar 218342 4562297
ehcache-1.5.0.jar 264400 4826697
dhis-web-importexport.jar 281502 5108199
cglib-2.1_3.jar 282338 5390537
spring-core-2.5.6.jar 285491 5676028
xwork-1.2.3.jar 286284 5962312
dhis-web-maintenance-datadictionary.jar 297665 6259977
ibatis2-sqlmap-2.1.7.597.jar 304649 6564626
jcommon-1.0.14.jar 307917 6872543
dom4j-1.6.1.jar 313898 7186441
backport-util-concurrent-3.1.jar 331716 7518157
commons-math-1.2.jar 338488 7856645
log4j-1.2.12.jar 358085 8214730
dhis-web-reporting.jar 376768 8591498
mail-1.4.jar 388864 8980362
velocity-1.5.jar 392124 9372486
dhis-service-importexport-2.0.1-SNAPSHOT.jar 407408 9779894
xstream-1.3.jar 411090 10190984
antlr-2.7.6.jar 443432 10634416
acegi-security-1.0.2.jar 456993 11091409
postgresql-8.3-603.jdbc4.jar 474746 11566155
woodstox-core-asl-4.0.3.jar 481111 12047266
spring-beans-2.5.6.jar 488282 12535548
joda-time-1.5.2.jar 531326 13066874
commons-collections-3.2.jar 571259 13638133
c3p0-0.9.1.2.jar 610790 14248923
jxl-2.6.jar 660390 14909313
mysql-connector-java-5.1.6.jar 703265 15612578
freemarker-2.3.4.jar 789043 16401621
poi-2.5.1-final-20040804.jar 802216 17203837
h2-1.1.109.jar 1163608 18367445
jfreechart-1.0.11.jar 1360956 19728401
jasperreports-2.0.2.jar 1788352 21516753
itext-1.4.8.jar 1891191 23407944
hibernate-3.2.6.ga.jar 2274768 25682712
derby-10.4.2.0.jar 2446767 28129479
spring-2.5.6.jar 2949500 31078979
webwork-2.2.6.jar 3218671 34297650
jdtcore-3.1.0.jar 3555707 37853357
Total 37853357
As you see we are carrying 37M of jar around. Which sounds about
right - the dhis.war weighs in at about 35M. That's fairly big - I've
got some thoughts about reducing it which I'd appreciate your comment
on. Because the above is listed by size, it makes sense to focus on
the bottom candidates as much as possible. Of the approx 38M, half of
that is taken up by the top 10 jars (out of 104 in total). The dhis*
jars (34 of them) account for about 3M which means that there are
about 60 'minor' jar dependencies which together account for around
15M.
1. jdtcore doesn't seem to be required in a production server. Maybe
it is required for debugging in eclipse. If we take it out we get
down to a war file of 32.5M which is a 10% improvement and full
functionality (I think)
2. derby - though I was the one pushing for derby support, it doesn't
100% work, we are so far quite happy with H2 for the embedded stuff
and if we take it out of the production release we get down to 30.2M
How to break the mystical 30M barrier ....
3. As far as I can see we are not using freemarker at all. I guess
we use velocity so it makes sense we wouldn't use both. Take it out
and we'd be down to 29.6M
As far as I can tell these can happen right away.
Other thoughts which can't happen right away:
4. We should not need to have jxl and poi. Much though we love
microsoft its enough to love the buggers once. We need to dump one of
them - probably jxl - and port the existing code to the other. Am I
right in thinking we are not yet using POI - I haven't found
references to it but maybe I'm grepping the wrong terms.
5. Related to the derby issue above. This might be a bit radical.
If we removed ALL the database drivers except perhaps the builtin h2
support, we could distribute the dhis.war + database extension. Pick
and mix and match your choice. Not sure if the benefits would be
worth the inconvenience, but it would also force us to look into
pluggable extensability.
6. reporting - we are currently doing jasper and birt. Why? I've no
doubt there's a historical rationale but I am not familiar with it.
Can we drive one direction or the other on this?
There's still a lot of unaccounted for Megabytes left but that's it
for now. Can we get under 25M? I think so.
Cheers
Bob