lkml.org 
[lkml]   [1999]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: > 15,000 Simultaneous Connections
Date
From

>Advantanges over sigwaitinfo():
>
> - can dequeue multiple events in one call
>

This is very useful to avoid context switches.

> - Queues would be automatically shared -- iff file descriptors are shared.
>

The same can be said about signal queues.

> - Since there is no implicit per-process state (e.g. signal handlers), we
> avoid the need for library and application code to fight it out over
> who gets what signals.
>

I don't see this as a big enough issue to outweigh the benefits. It is fairly
easy to pick out a signal and use it. (It it more difficult to ensure that
other things don't stomp on your signal handlers).

The benefits that I see of POSIX stuff is that there is already a precedent
and API out there. It allows you to queue I/O requests and let the OS worry
about shoving the data out the pipe.

Somethings that I think would be very nice additions is the ability to
grab multiple events from the queue, aio_{read,write}v(), and aio_sendfile().
I think that an efficient Asynchronous I/O daemon (or handling algorithms)
could beat out the userland data pushing.

>
>gid
>

-jason


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:54    [from the cache]
©2003-2011 Jasper Spaans