View Full Version : LatencyMon to find slowness causes

02-18-2017, 11:45 PM

occasionally there are threads about system slowness or stuttering etc.

I for example had dropouts when using a midi keyboard to drive the Pianoteq virtual piano software.

I learned that latency issues of drivers are often the cause.

Found the free tool "LatencyMon". It seems to be the inoffical debugging standard used by sound people.

Download link is near the bottom of the page.

In my case LatencyMon showed that ndis.sys generated high latency. Ndis.sys belongs to the networking subsystem, so I downloaded the latest Intel drivers for my network card. And voila, the dropouts were gone.

Maybe LatencyMon might help others as well to identify system issues.

Screenshot of "good" system behaviour (Dell workstation):

Vaio Z Canvas when not in power saving mode:

I read about the hard pagefaults. In my case they are not harmful.