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From Tim Whittington <t...@apache.org>
Subject Re: DO NOT REPLY [Bug 50078] Concurrent access to WeakHashMap in ConcurrentCache causes infinite loop, 100% CPU usage
Date Fri, 15 Oct 2010 02:29:23 GMT
No worries, I got to take a tour of the EL implementation anyway :)

I was in the middle of replying to you when my loaner laptop died, so
I called it a night.
New laptop arrived today (after a 3 week 'incident at sea' hiatus) so
should be back to full speed soon.

cheers
tim

On Fri, Oct 15, 2010 at 6:36 AM, Mark Thomas <markt@apache.org> wrote:
> On 14/10/2010 16:08, Mark Thomas wrote:
>> On 14/10/2010 09:44, Tim Whittington wrote:
>>> I can have a look at this.
>>
>> Tim,
>>
>> Any progress on this? I'd like to get something into Tomcat 7 before I
>> tag 7.0.4 later today. I'm happy to look at it if that doesn't fit your
>> schedule.
>
> As will soon be apparent from the commit logs, I went ahead and took a
> look at this so I could tag 7.0.4.
>
> Sorry if I stepped on your toes in the process.
>
> Mark
>
>>
>> Mark
>>
>>
>>
>>> Is there a preferred way of making this configurable?
>>> Given the caches are static, it's either going to be system property,
>>> or changing to using an instance cache retained somewhere appropriate
>>> (at the moment the builders appear to be instantiated in a lot of
>>> places).
>>>
>>> Just out of interest, does anyone have any data/experience on the
>>> behaviour of the eden/pull to eden/weak overflow style of caching vs a
>>> conventional LRU cache? (not one I've seen used a lot before).
>>>
>>> cheers
>>> tim
>>>
>>> On Wed, Oct 13, 2010 at 4:46 AM,  <bugzilla@apache.org> wrote:
>>>> https://issues.apache.org/bugzilla/show_bug.cgi?id=50078
>>>>
>>>> --- Comment #1 from Remy Maucherat <remm@apache.org> 2010-10-12 11:46:18
EDT ---
>>>> Ooops, this needs to be fixed ASAP.
>>>>
>>>> The map sizes need to be made configurable I think (with the sync, 5000 might
>>>> be too low for big setups and would result in a lot of syncs).
>>>>
>>>> --
>>>> Configure bugmail: https://issues.apache.org/bugzilla/userprefs.cgi?tab=email
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>>>>
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