[erlang-questions] Does some system call block many processes?

Bin Wang <>
Tue Aug 12 04:11:06 CEST 2014


Such as database operations. Is it possible that the driver uses some
IO calls that blocked the processes?

2014-08-12 9:25 GMT+08:00 Sean Cribbs <>:
> Generally, no. The most expensive system calls (usually IO) will use
> kqueue, epoll, or select (the first two if you use the "+K true" flag
> on the command line). Other calls may use async threads so that they
> do not block the scheduler. What system calls are you trying to
> perform?
>
> On Mon, Aug 11, 2014 at 8:12 PM, Bin Wang <> wrote:
>> Hi,
>>
>> I know there are some system calls that will block the whole OS
>> thread. While multi Erlang processes may running on one OS thread. So
>> if one of the process call a block system call, will all the processes
>> running on the same thread block?
>>
>> Thanks.
>>
>> ---
>> Bin Wang
>> _______________________________________________
>> erlang-questions mailing list
>> 
>> http://erlang.org/mailman/listinfo/erlang-questions
>
>
>
> --
> Sean Cribbs <>
> Software Engineer
> Basho Technologies, Inc.
> http://basho.com/



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