Too many semaphores, image blocked

> On 20.10.2011 15:30, Igor Stasenko wrote:
>> 2011/10/20 Janko Mivšek<[hidden email]>:
>>> Hi guys,
>>>
>>> I'm measuring how my image is breathing through the time and what is
>>> interesting is how nr. of Semaphore instances is variating through the
>>> time. Every hour just before snapshot I report nr of instances, see
>>> last
>>> 10 hours:
>>>
>> Well, the number of semaphores tells nothing because not all of them
>> serve for sockets.
>>
>> There are 3 semaphores per socket. So, if you have 4 sockets, there
>> should be 12 external objects.
>> Of course not counting others, which is there for other purposes.
>>
>> Could you add following to report:
>>
>> Socket registry size
>> StandardFileStream registry size
>> (ExternalSemaphoreTable unprotectedExternalObjects reject: #isNil) size
> There's something wrong with startup/shutdown list, at least with my
> Pharo 1.4 image...

> On 21.10.2011 10:42, Henrik Sperre Johansen wrote:
>>
>> On 20.10.2011 15:30, Igor Stasenko wrote:
>>>
>>> 2011/10/20 Janko Mivšek<[hidden email]>:
>>>>
>>>> Hi guys,
>>>>
>>>> I'm measuring how my image is breathing through the time and what is
>>>> interesting is how nr. of Semaphore instances is variating through the
>>>> time. Every hour just before snapshot I report nr of instances, see last
>>>> 10 hours:
>>>>
>>> Well, the number of semaphores tells nothing because not all of them
>>> serve for sockets.
>>>
>>> There are 3 semaphores per socket. So, if you have 4 sockets, there
>>> should be 12 external objects.
>>> Of course not counting others, which is there for other purposes.
>>>
>>> Could you add following to report:
>>>
>>> Socket registry size
>>> StandardFileStream registry size
>>> (ExternalSemaphoreTable unprotectedExternalObjects reject: #isNil) size
>>
>> There's something wrong with startup/shutdown list, at least with my Pharo
>> 1.4 image...
>
> Both InputEventFetcher and InputEventPollingFetcher are in the lists, going
> back to at least 1.3
> Can't have that. Probably got there when switching InputFetcher (IE a _long_
> time ago) due to being careless with receiver of #install / #deinstall...
> InputEventPollingFetcher should be removed.

>> ** image state:
>>   0 HTTPCommections
>>   4 Sockets
>>   20 Processes
>>   300 Semaphores
>>
>>
> Well, the number of semaphores tells nothing because not all of them
> serve for sockets.
>
> There are 3 semaphores per socket. So, if you have 4 sockets, there
> should be 12 external objects.
> Of course not counting others, which is there for other purposes.
>
> Could you add following to report:
>
> Socket registry size
> StandardFileStream registry size
> (ExternalSemaphoreTable unprotectedExternalObjects reject: #isNil) size
>

> S, Henrik Sperre Johansen piše:
>
>>> There's something wrong with startup/shutdown list, at least with my
>>> Pharo 1.4 image...
>> Both InputEventFetcher and InputEventPollingFetcher are in the lists,
>> going back to at least 1.3
>> Can't have that. Probably got there when switching InputFetcher (IE a
>> _long_ time ago) due to being careless with receiver of #install /
>> #deinstall...
>
>> InputEventPollingFetcher should be removed.
>
> Henrik, can you prepare a patch (or instructions how to remove it) so
> that I'll check immediately?

> S, Henrik Sperre Johansen piše:
>
>>> There's something wrong with startup/shutdown list, at least with my
>>> Pharo 1.4 image...
>> Both InputEventFetcher and InputEventPollingFetcher are in the lists,
>> going back to at least 1.3
>> Can't have that. Probably got there when switching InputFetcher (IE a
>> _long_ time ago) due to being careless with receiver of #install /
>> #deinstall...
>
>> InputEventPollingFetcher should be removed.
>
> Henrik, can you prepare a patch (or instructions how to remove it) so
> that I'll check immediately?
>
> Best regards
> Janko
>

> S, Marcus Denker piše:
>
>>> Henrik, can you prepare a patch (or instructions how to remove it) so
>>> that I'll check immediately?
>
>> execute:
>>
>> Smalltalk removeFromStartUpList: InputEventPollingFetcher.
>> Smalltalk removeFromShutDownList: InputEventPollingFetcher.
>
> Done, now how can I safely clear the ExternalSemaphoreTable, which will
> otherwise stay with currently 53 entries open?
>