On Feb 15, 2011, at 7:54 PM, Chuck Remes wrote:

> 
> On Feb 15, 2011, at 7:41 PM, Dhammika Pathirana wrote:
> 
>>> Assertion failed: new_sndbuf > old_sndbuf (mailbox.cpp:183)
>>> 
>>> 
>>> new_sndbuf = 10485760, old_sndbuf = 10485760
>>> 
>> 
>> Is it failing on last check?
>> new_sndbuf = 4 * old_sndbuf, is that correct?
> 
> Right, the assertion is verifying that new_sndbuf is greater than old_sndbuf. 
> When the buffer expansion fails, the assertion triggers.


So, it's trying to expand the buffer past 10MB and fails. The buffer starts out 
at 512k (new default I set) and grows very rapidly. What kind of data is 0mq 
putting on this internal socket that could grow to this size so quickly?

I did track down the code in this component that appears to trigger it. It's 
publishing as fast as it can to a PUB socket. The socket is allocated with its 
default settings (HWM, etc) so it should be able to grow to the size of memory 
if the subscribers are too slow. This box has 12GB RAM and is nowhere near its 
limit.

Suggestions?

cr

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