Re: [patch - v3] epoll ready set loops diet ...

[Davide Libenzi]

On Wed, 28 Feb 2007, Eric Dumazet wrote:

> On Wednesday 28 February 2007 19:37, Davide Libenzi wrote:
> 
> > +		list_del(&epi->rdllink);
> > +		if (!(epi->event.events & EPOLLET) && (revents & epi->event.events))
> > +			list_add_tail(&epi->rdllink, &injlist);
> > +		else {
> 
> Is the ( ... & epi->event.events) really necessary ? (It seems already done)

Yes, look here:

	if (epi->event.events & EPOLLONESHOT)
                 epi->event.events &= EP_PRIVATE_BITS;

Oneshot events should not be requeued.


> I was wrong about the size of epitem : it is now 68 bytes instead of 72.
> At least we now use/dirty one cache line instead of two per epitem.
> 
> Do you have another brilliant idea to shrink 4 more bytes ? :)

I don't think we can cleanly shove more stuff out of it.



- Davide


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