can I let all winbindd processes accept connections like nginx does

[Ira Cooper]

On Tue, Dec 17, 2013 at 12:02 PM, Jeremy Allison <jra at samba.org> wrote:

> On Tue, Dec 17, 2013 at 04:30:51PM +0100, Volker Lendecke wrote:
> > On Tue, Dec 17, 2013 at 11:11:59PM +0800, Tom wrote:
> > > Yes, I have already done some performance tuning before I sent my
> first email to this email list.
> > > The CPU utilization of all the child winbindd processes are no more
> than 10 percent.
> > > The CPU utilization of the parent winbindd processes is about 30-40
> percent.
> > > I found the parent winbindd process spent a lot of CPU time on 'poll'
> syscall, seems it can't handle so many concurrent connections well.
> >
> > Ok, poll is bad. What platform are you on? Linux has epoll,
> > which we have support for. This is definitely required for
> > that kind of load. If it's something else, we have a bit
> > more work ahead, we would need to write a tevent backend for
> > kqueue or /dev/poll.
>
> I wrote a Solaris "ports" backend for tevent for
> my own amusement.
>
> It's performance is *worse* (according to Ira :-).


I'm not sure I ever benchmarked it.

I was too busy to test it... alas. :/

-Ira