Opened 7 weeks ago

Closed 6 weeks ago

Last modified 6 weeks ago

#17279 closed defect (fixed)

[Patch] improve performance when retrieving history

Reported by: GerdP Owned by: team
Priority: normal Milestone: 19.02
Component: Core Version:
Keywords: template_report Cc:


What steps will reproduce the problem?

  1. Start JOSM with --debug
  2. Open URL
  3. Look at the debug messages

What is the expected result?

No calls of GET

What happens instead?

Note that JOSM downloads a lot of changeset data for each object

GET -> 200
GET,15351356,14450647 -> 200 (687 B)
GET -> 200
GET -> 200 (439 B)

The data retrieved with the GET is not used.

Please provide any additional information below. Attach a screenshot if possible.

The same problem occurs with the undelete plugin. Without these calls both acions are much faster.

Build-Date:2019-02-02 09:47:56

Identification: JOSM/1.5 (14756 SVN en) Windows 10 64-Bit
OS Build number: Windows 10 Home 1803 (17134)
Memory Usage: 572 MB / 1753 MB (367 MB allocated, but free)
Java version: 1.8.0_191-b12, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:64582, -ea, -Dfile.encoding=UTF-8]
Program arguments: [--debug]

+ OpeningHoursEditor (34867)
+ apache-commons (34506)
+ buildings_tools (34867)
+ continuosDownload (82)
+ download_along (34869)
+ ejml (34389)
+ geotools (34513)
+ jaxb (34678)
+ jts (34524)
+ o5m (34867)
+ opendata (34867)
+ pbf (34867)
+ poly (34867)
+ reltoolbox (34867)
+ reverter (34867)
+ undelete (34877)
+ utilsplugin2 (34867)

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.

Attachments (2)

17279.patch (2.8 KB) - added by GerdP 7 weeks ago.
17279-v2.patch (4.3 KB) - added by GerdP 7 weeks ago.
add call to use new method

Download all attachments as: .zip

Change History (5)

Changed 7 weeks ago by GerdP

Attachment: 17279.patch added

comment:1 Changed 7 weeks ago by GerdP

The patch implements a new method HistoryLoadTask.setChangesetDataNeeded(boolean b) which might be called with false to suppress the
unwanted calls. It is not yet called anywhere. Maybe it would be better to set it to false by default and use true in the HistoryBrowser which needs the data.

Changed 7 weeks ago by GerdP

Attachment: 17279-v2.patch added

add call to use new method

comment:2 Changed 6 weeks ago by GerdP

Resolution: fixed
Status: newclosed

In 14763/josm:

fix #17279: improve performance when retrieving history

comment:3 Changed 6 weeks ago by GerdP

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