Description

Add the Macro  <<PageList>>  on a page and watch the memory usage of your wsgi processes. In my case the single process went up from 80MB to 500MB. Imaging what happens if I got 100 calls every minute

Steps to reproduce

1. you need have a wiki with ~1'000 pages or more

2. add the macro  <<PageList>> 

3. call the page a few times and watch our memory usage.

Example

On this Wiki I added it temporarly under WikiSandBox, you just can see atleast that it needs some time to complete the request:

MoinMoin PoweredPython PoweredGPL licensedValid HTML 4.01
Page.execute = 34.971s _moinSearch = 23.282s antispam = 0.683s getACL = 12.630s getPageCount = 0.041s getPageList = 22.079s init = 0.003s loadLanguage = 0.001s load_multi_cfg = 0.000s parsePageLinks = 0.014s run = 40.476s send_page = 35.093s send_page_content = 35.005s total = 40.479s

Component selection

• Macro PageList

Details

Workaround

• Disable/Remove the macro PageList

Discussion

Its not per se a bug, more if you running your wiki in a limited hosting enviroment, you're required to carefully use your ressources (e.g. memory, cpu, ...). In my case removing/disabling the macro is ok. -- MarcelHäfner 2012-09-27 12:51:07

Was this the same with 1.9.4 or is this a regression for 1.9.5? -- ThomasWaldmann 2012-09-28 11:07:10

I don't know. I just found it out a few days ago. In generaly its similary with this report ../DisadvantageousSearchLeadsToHighMemoryUsage. -- MarcelHäfner 2012-09-28 11:13:14

Plan

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• Assigned to:
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CategoryMoinMoinBug