Re: Running out of buffers?

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

On Fri, Apr 27, 2018 at 1:18 PM Roy Marples <roy%marples.name@localhost> wrote:

> On 27/04/2018 04:09, Paul Goyette wrote:
> > I've got lots of memory, so I don't understand what buffers are not
> > available.  Ever since upgrading to my current system (sources dated
> > 2018-03-20 11:25:00 UTC), I've been seeing these messages at random
> > intervals:
> >
> > Apr 23 05:51:33 speedy ntpd[526]: routing socket reports: No buffer
> > space available

> This may come as some suprise, but the only change is that the error is
> now logged. Previously it was silenty discarded.

> No-one has yet weighed in on how this should be resolved.


> > I never saw them with a previous kernel (from March 3rd), so it
> > would seem that something changed between the 3rd and 20th.
> >
> > Is anyone else seeing similar?
> >
> > Any clues on what changed?
> >
> > The situation doesn't seem fatal (at least, not yet), but I'd like
> > to mitigate the condition before it gets worse.  :)

> Ideas welcome!
> The only one stop solution I can think of is increasing the the default
> buffer size, but this might adversley affect small memory systems.

> > Thanks in advance for any suggestions.

> Looking forward to hearimg some!

One option would be to add a new socket option and send up an error
only if it's set, which avoids surprising unaware apps.

   ozaki-r