Hyper-V: Performance (Counters): Unterschied zwischen den Versionen

Version vom 5. Dezember 2017, 10:57 Uhr

What: This measures the rate (number of times per second) each logical CPU changes what virtual processor it is running.
Counter: Hyper-V Hypervisor Logical Processor(*)\Context Switches/sec
Threshold: (any instance except for "_Total") > 20000, (sustained for > 5min).
Why: We use this as a general health & performance indicator for the host & virtual machines. This counter must be used in context with all other activity based counters (CPU, Disk & Network, latency & throughput).
What to do if threshold is exceeded:
- Check VM config (particularly remove / disable any active & busy emulated devices)
- Check that the VM is using the correct version of the integration components.
- Check host operating system utilization Root VP CPU usage (host OS utilization) - see the "Hyper-V Hypervisor Root Virtual Processor" counter section for the specifics.
- Check drivers - particularly network and storage drivers, but other too.
- Check for significant inconsistency across your hosts - it can indicate significant configuration or load differences.

(> 1 MB/s) indicates Shared VHDX files or that CSV is in redirected mode.

Weitere Informationen:

@@ Zeile 9: / Zeile 9: @@
 === Hyper-V Hypervisor Virtual Processor ===
 [[Datei:02-hyper-v virtual cpu.png|800px]]
+=== Physical CPU Context Switching ===
+*'''What''': This measures the rate (number of times per second) each logical CPU changes what virtual processor it is running.
+*'''Counter''': Hyper-V Hypervisor Logical Processor(*)\Context Switches/sec
+*'''Threshold''': (any instance except for "_Total") > 20000, (sustained for > 5min).
+*'''Why''': We use this as a general health & performance indicator for the host & virtual machines. This counter must be used in context with all other activity based counters (CPU, Disk & Network, latency & throughput).
+*'''What to do if threshold is exceeded:'''
+**Check VM config (particularly remove / disable any active & busy emulated devices)
+**Check that the VM is using the correct version of the integration components.
+**Check host operating system utilization Root VP CPU usage (host OS utilization) - see the "Hyper-V Hypervisor Root Virtual Processor" counter section for the specifics.
+**Check drivers - particularly network and storage drivers, but other too.
+**Check for significant inconsistency across your hosts - it can indicate significant configuration or load differences.