Hi,
I've a server using epoll and I've noticed that when
the traffic is low, the epoll_wait() latency goes up.
I've tried to reproduce it with a single client
and basically, if ep_poll() is able to find an event or the timeout is 0,
the latency is down to 5usec, otherwise if it enters the waitque
On Thu, Oct 16, 2014 at 02:09:05PM +0200, Nev Ikte wrote:
> Hi,
>
> I've a server using epoll and I've noticed that when
> the traffic is low, the epoll_wait() latency goes up.
>
> I've tried to reproduce it with a single client
> and basically, if ep_poll() is able to find an event or the timeou
The usual solution in low latency environments where the higher delays
is an issue is to simply spin on a poll. If your polling multiple
sockets then you need to cater for this in your code and avoid the
kernel paths wherever possible.Depending on the hardware
configuration consistent low late
On Thu, 16 Oct 2014 14:09:05 +0200, "Nev Ikte" said:
> I've tried to reproduce it with a single client
> and basically, if ep_poll() is able to find an event or the timeout is 0,
> the latency is down to 5usec, otherwise if it enters the waitqueue
> the latency goes up to 10-25usec, which impact t
