[
https://issues.apache.org/jira/browse/CB-1250?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13436143#comment-13436143
]
Braden Shepherdson commented on CB-1250:
----------------------------------------
>From my measurements on my Galaxy Nexus with Jelly Bean and 1442 contacts, I
>have the following timings (repeated with small variance over 3 runs):
1. Javascript -> ContactAccessor's search: more or less instant.
2. Constructing the query data, WHERE clause, etc.: 1.25s
3. query() to retrieve the cursor: 2.5s
4. Populating the list of contacts: 35.8s
5. Java -> Javascript with the result: 3.5s
Many GC calls are done during steps 4 and 5, but the total time taken for GC is
around 200ms.
Using Debug.startMethodTracing() and Traceview, 40% of the time is being spent
in getColumnIndex, 16% in moveToNext(). The rest is too scattered to really
target. However, neither of those functions are ones we can really avoid
calling. Calls to getColumnIndex are not being made unnecessarily so far as I
can see. I just have a lot of contacts.
There doesn't appear to be any low-hanging fruit here to speed things up.
The limit/offset approach looks like it will work, since those SQL(ish) clauses
can be appended to the sortOrder field. I'm looking into that further.
> Speed up fetching of contacts on Android
> ----------------------------------------
>
> Key: CB-1250
> URL: https://issues.apache.org/jira/browse/CB-1250
> Project: Apache Cordova
> Issue Type: Improvement
> Components: Android
> Reporter: Braden Shepherdson
> Assignee: Joe Bowser
> Priority: Minor
> Fix For: 2.1.0
>
>
> Fetching all contacts on Android takes a long time when the user has many
> contacts (I have ~1450 and it takes 20-30 seconds). The Contacts app can load
> in less than a second, so what are we doing that's causing it to slow down?
> As an alternative or additional enhancement, add "limit" and "offset"
> functionality to the ContactFindOptions, to retrieve smaller subsets of the
> contacts more quickly.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
