Re: [PATCH] /dev/epoll update ...

Davide Libenzi (davidel@xmailserver.org)
Thu, 20 Sep 2001 11:25:13 -0700 (PDT)


On 20-Sep-2001 Benjamin LaHaise wrote:
> On Wed, Sep 19, 2001 at 11:43:57PM -0500, Christopher K. St. John wrote:
>> Sorry, bad editing, that should be:
>>
>> Assume a large but bursty current of low bandwidth
>> high latency connections instead of a continuous steady
>> flood of high bandwidth low latency connections.
>
> Isn't asynchronous io a better model for that case?

The advantage /dev/epoll has compared to aio_* and RTsig is
1) multiple event delivery/system call
2) less user<->kernel memory moves

The concept is very similar anyway coz you basically have to initiate the
io-call and wait for an event.
The difference is how events are collected.

- Davide

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