Re: [PATCH] rfc: threaded epoll_wait thundering herd

From: Davide Libenzi
Date: Tue May 08 2007 - 02:30:38 EST


On Mon, 7 May 2007, Ulrich Drepper wrote:

> On 5/7/07, Davide Libenzi <davidel@xxxxxxxxxxxxxxx> wrote:
> > read(2) is a cancellation point too. So if the fine userspace code issues
> > a random pthread_cancel() to a thread handling that, data is lost together
> > with the session that thread was handling.
>
> This is absolutely not comparable. When read/write is canceled no
> data is lost. Some other thread might have to pick up the slack but
> that's it.

Ohh, is it different? Please, it is not even worth to show you how exactly
the same is. Because you are perfectly aware of it.


> We went over this for kevent discussions. I really am not willing to
> do it all again especially since there is no hope to achieve a
> satisfying result with poll. So, don't count my silence as agreement,
> it isn't.

You're climbing mirrors AFAICS, more that bringing any valid points. And
as far as I'm concerned, this thread is becoming very repetitive and boring.



- Davide


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