[Seaside] Squeak hangs

[radoslav hodnicak]

In the past weeks my production image started to suffer random hang-ups, 
it would eat all cpu time and the UI doesn't respond anymore. So I 
attached gdb to the process on one such occasion and dumped the stack.

I saw this

2127996532 Delay>wait
2127996440 WorldState>interCyclePause:
2127996348 WorldState>doOneCycleFor:
2127996256 PasteUpMorph>doOneCycle
2026046920 [] in Project class>spawnNewProcess
2026047104 [] in BlockContext>newProcess
2128018240 WriteStream>pastEndPut:
2128018148 WriteStream>nextPut:
2128018056 RWBinaryOrTextStream>nextPut:
2128017872 [] in Stream>nextPutAll:
2128017964 SequenceableCollection>do:
2128017756 Stream>nextPutAll:
2128017664 WriteStream>nextPutAll:
2128017572 WAHtmlStreamDocument>text:
2128017480 WAAbstractHtmlBuilder>html:
...

It looks like the UI process hijacked the seaside process or something. Is 
this normal? This is squeak3.6 on 3.6.3 VM on linux. I can't figure out 
what is causing this, the image used to run for months without any 
trouble.

rado