Re: too many open files

Georg,

Can you be a bit more explicit? Each process on MacOS has a limit of 
256 open files you must have open an awful number file to reach that 
limit? Or is there another mechanism? Are the file handle in static 
methods?

Thanks

Pierre

On Feb 11, 2004, at 1:46, Georg Tuparev wrote:

> Hey Folks,
>
> Remember this discussion that we had a fortnight ago? I was telling 
> you my story: a second team deployed few WO apps on the same 10.2.8/WO 
> 5.2.1 Xserve, and suddenly all these problems described below start 
> popping up. Most of you were finger-pointing  at wotaskd or 
> JavaMonitor ... there were even thoughts that this happens if other 
> monitors are running on the same network etc.
>
> My "feeling" was (based on past - bad - experience) that it is our 
> (developer's) mistake related to WOResourceManager  usage. It turned 
> out to be almost correct - at least in our case.
>
> The problem was fixed by setting unused file handles to null and 
> calling System.gc(). That's all! No EC (dead)locks, no Monitor 
> mysteries...
>
> I was always claiming that I would prefer the Objective-C way of 
> memory management, and this is yet another reason why I feel I am 
> right :-)
>
> cheers
>
> -- georg --
>
> "War is God's way of teaching Americans about geography."
> Ambrose Bierce, writer (1842-1914)
>
> On Jan 29, 2004, at 2:53 PM, Simon wrote:
>
>>
>> we've seen this problem when running multiple apps on a panther 
>> server and re-boot is the only way out we have found. another 
>> panther-related problem we see randomly is this:
>>
>> Cannot write to file 
>> /Library/WebObjects/Configuration/SiteConfig.xml. Possible 
>> Permissions Problem.
>>
>> ... when trying to shut down an instance. however, if we keep 
>> clicking the "shut down all instances" button then it does eventually 
>> go away and the instances do shut down.
>>
>> simon
>>
>>
>> On 28 Jan 2004, at 21:39, Pierre Frisch wrote:
>>
>>> David,
>>>
>>> I would disagree with you on this one. I agree that on WO this can 
>>> be home grown however in this case there is a problem in Panther. I 
>>> know because I have had a machine with a bunch of application 
>>> running on Jaguar that was very stable. The only thing that has 
>>> changed is the OS and the version of WO and now I have all sorts of 
>>> troubles.
>>>
>>> There are two problems on 10.2.3 one with Apache and one with 
>>> wotaskd. The Apache one is fairly old: the adaptor does not close 
>>> the connections to the app immediately and let them linger with 
>>> consume some of those open file. In addition wotaskd appears to have 
>>> developed a similar disease on Panther. The combination of both is 
>>> lethal. You can reduce the wotskd problem by disabling the 1085 
>>> config distribution feature and use teh file config.
>>>
>>> Pierre
>>> --
>>> Pierre Frisch
>>> sPearWay Ltd.
>>> sPearCat Web Catalogs, the flexibility of custom design, the price 
>>> of a package.
>>> http://www.spearcat.com/
>>>
>>> On Jan 28, 2004, at 12:46, David Teran wrote:
>>>
>>>> Hi,
>>>>
>>>> On 28.01.2004, at 21:39, Jürgen Rohrbach wrote:
>>>>
>>>>> hello,
>>>>>
>>>>> i have read all the postings with "too many open files" but i have 
>>>>> still a problem to find the correct solution/workaround.
>>>>> after 2-3 days my app has the following in the log file:
>>>>>
>>>>> IOException: too many open files
>>>>>
>>>>>
>>>>> which solutions work to get rid of this shit!
>>>>>
>>>>
>>>>
>>>> best is to check your code. It turns out that the 'shit' is 
>>>> homegrown.
>>>>
>>>> Things to check:
>>>>
>>>> 1) wrong usage of Process instances
>>>> 2) open streams
>>>> 3) unhandled exceptions
>>>> 4) wrong deployment
>>>> ...
>>>>
>>>> This might annoying for you but the problem is in your code. Do you 
>>>> know the lsof command or are you working on windows?
>>>>
>>>> cheers David
>>>>
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>
>
> Georg Tuparev
> Tuparev Technologies
> Klipper 13
> 1186 VR Amstelveen
> The Netherlands
> Mobile: +31-6-55798196
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