throwing static exceptions sometimes VERY slow!

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throwing static exceptions sometimes VERY slow!

Wieland, Jacob

Hi, 


I am observing a very strange behavior.


In our generated code (due to various reasons I won't go into here unless I have to, but trust me, they are legit), we throw static exceptions for control flow purposes, This seems to work fine and without performance loss most of the time. However, we are observing now that every few seconds, a throw sometimes takes up between 1,5 and 2.5 seconds! (in contrast to the normal almost non-measurable time).


It does not seem to be GC related, the only idea that I have is the jitter.


So, my question is. Is this a known (and for some strange reason maybe even accepted) behavior or is this a bug that I should file with Oracle (or you guys).


BR


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Re: throwing static exceptions sometimes VERY slow!

Maurizio Cimadamore

Hi Jacob,
did you mean to send this to hotspot-dev @ o.j.n, or is there something javac related in your question that I misunderstood?


Thanks
Maurizio


On 24/02/17 09:17, Wieland, Jacob wrote:

Hi, 


I am observing a very strange behavior.


In our generated code (due to various reasons I won't go into here unless I have to, but trust me, they are legit), we throw static exceptions for control flow purposes, This seems to work fine and without performance loss most of the time. However, we are observing now that every few seconds, a throw sometimes takes up between 1,5 and 2.5 seconds! (in contrast to the normal almost non-measurable time).


It does not seem to be GC related, the only idea that I have is the jitter.


So, my question is. Is this a known (and for some strange reason maybe even accepted) behavior or is this a bug that I should file with Oracle (or you guys).


BR


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Dr. Jacob Wieland

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10179 Berlin, Germany



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Spirent Communications and Testing Technologies join forces to become your test automation power-house. Read more at http://conta.cc/1S62BEY.





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Spirent Communications plc
Northwood Park, Gatwick Road, Crawley, West Sussex, RH10 9XN, United Kingdom.
Tel No. +44 (0) 1293 767676
Fax No. +44 (0) 1293 767677

Registered in England Number 470893
Registered at Northwood Park, Gatwick Road, Crawley, West Sussex, RH10 9XN, United Kingdom.

Or if within the US,

Spirent Communications,
27349 Agoura Road, Calabasas, CA, 91301, USA.
Tel No. 1-818-676- 2300

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