can I let all winbindd processes accept connections like nginx does

[Jeremy Allison]

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 :-).

Jeremy.