[zeromq-dev] 1 HWM

[Matt Weinstein]

Yes, rounding up would probably be better :-)

	LWM = (HWM + 1) / 2

Best,

Matt

On Jul 23, 2010, at 12:03 PM, Brian Murphy wrote:

> Looking at the code it seems that the LWN is calculated as HWM/2 if is
> less than 500. Thus in this case LWM gets set to zero.
> ( pipe.cpp:319 )
> Probably a bug but as you said not really important because HWM of 1
> is not a very useful value, I'm not sure what a valid value of LWM
> would be in this case.
> Cheers,
> Brian
>
> On Fri, Jul 23, 2010 at 4:50 PM, ilejncs <ilejncs at narod.ru> wrote:
>> Hello,
>> 0mq people.
>>
>> It looks like '1' is a special HWM value.
>>
>> If it is set for DOWNSTREAM socket,
>> it is never possible to send second message (assuming server side  
>> is Ok) via such socket.
>>
>> The behavior is consistent: application blocks on the second send  
>> or on poll in case of NONBLOCK mode.
>>
>> I assume the roots of the issue are somewhere near ypipe_t::flush,  
>> though not sure.
>>
>> If it is a bug, it is not really important because '1' is rather  
>> strange queue length.
>> If it is a feature, the description is appreciated.
>>
>> Thanks.
>>
>> ==
>> Best regards and nice weekend,
>> Ilja Golshtein.
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>>
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