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Re: [cf-dev] CPU issue and release 2.0.0M5
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Hi Simon,
> This let me think we should release a 2.0.0M5 soon.
> Do you have particular point you want to address/finished for this
>2.0.0M5 ?
Sounds good.
If possible, a review and merge of PR #397 would make the new sandbox "useful".
Mit freundlichen Grüßen / Best regards
Achim Kraus
(INST/ECS4)
Bosch Software Innovations GmbH | Stuttgarter Straße 130 | 71332 Waiblingen | GERMANY | www.bosch-si.com
Sitz: Berlin, Registergericht: Amtsgericht Charlottenburg; HRB 148411 B
Aufsichtsratsvorsitzender: Dr.-Ing. Thorsten Lücke; Geschäftsführung: Dr.-Ing. Rainer Kallenbach, Michael Hahn
-----Original Message-----
From: cf-dev-bounces@xxxxxxxxxxx [mailto:cf-dev-bounces@xxxxxxxxxxx] On Behalf Of Simon Bernard
Sent: Dienstag, 5. September 2017 11:28
To: Californium (Cf) developer discussions <cf-dev@xxxxxxxxxxx>
Subject: [cf-dev] CPU issue and release 2.0.0M5
Hi,
I talked about CPU issue in production with Californium/Scandium some weeks ago.
After a long period of time the CPU increase exponentially while the traffic is constants.
Playing with CPU profiler does not reveal "big" performance issue.
Analysis of Heap dump and GC logs, let me thinks that this is about memory leak.
The GC logs show a large CPU consumption when the heap is almost full.
The heap dump show that memory leak seems to be in InMemoryExchangeStore, more precisely ExchangeByToken map.
Most of Exchanges in this map are about observe request using block2.
The issue impact 2.0.0M3 (the one we currently using) but I think also the 2.0.0M4.
The good news : it should be fixed in master since PR 369 :
https://github.com/eclipse/californium/pull/369
This let me think we should release a 2.0.0M5 soon.
Do you have particular point you want to address/finished for this
2.0.0M5 ?
Simon
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