binaries vs lists
Tue Nov 11 15:58:18 CET 2003
Bengt Kleberg wrote:
> Serge Aleynikov wrote:
>> I was wonderting if someone could contribute a thought to the
>> following question regarding efficiency.
> does it have to be efficient? have you found this to be a bottle neck?
The expected flow is over 1000 binary messages / second. I haven't yet
found this to be a bottleneck, but I'd prefer to have the extra CPU time
available for other Erlang tasks.
>> I have an Erlang TCP client that processes a binary stream which needs
>> to be post-processed by removing escaped bytes. Let's say, that byte
>> 16$FF is escaped as <<16#FE, 16$01>>, and the 16#FF value is used as a
>> message separator. The variable hex messages are within 512 bytes each.
> if i understood the 512 bytes statement correctly, it is ok to build the
> list on the stack, thus avoiding lists:reverse/1 in solution 1.
Do I have a control over where the list is being built (heap/stack)? Or
this is purely dependent on the list size? If so, are you implying that
I should append items at the end instead of doing it in front, and using
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