weizhouapache commented on code in PR #285:
URL: 
https://github.com/apache/cloudstack-documentation/pull/285#discussion_r961359429


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source/upgrading/upgrade/kvm-417.rst:
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@@ -0,0 +1,30 @@
+.. Licensed to the Apache Software Foundation (ASF) under one
+   or more contributor license agreements.  See the NOTICE file
+   distributed with this work for additional information#
+   regarding copyright ownership.  The ASF licenses this file
+   to you under the Apache License, Version 2.0 (the
+   "License"); you may not use this file except in compliance
+   with the License.  You may obtain a copy of the License at
+   http://www.apache.org/licenses/LICENSE-2.0
+   Unless required by applicable law or agreed to in writing,
+   software distributed under the License is distributed on an
+   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+   KIND, either express or implied.  See the License for the
+   specific language governing permissions and limitations
+   under the License.
+
+KVM agents CPU speed detection issue
+====================================
+
+There is an issue with AMD (and possibly other CPU architectures) on the CPU 
speed detection at the 
+4.17.0 and 4.17.0.1 CloudStack agents on KVM hosts at startup. The CloudStack 
agents will attempt to 
+get the CPU speed  by reading the 
`/sys/devices/system/cpu/cpu0/cpufreq/base_frequency` information. 

Review Comment:
   cloudstack agent tries to get cpu speed in different ways
   see https://github.com/apache/cloudstack/pull/5506
   
   I personally think it is a libvirt issue, `virsh nodeinfo` returns incorrect 
value with AMD cpus.
   
   see https://github.com/apache/cloudstack/issues/6680#issuecomment-1234492354



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