weizhouapache commented on a change in pull request #5506:
URL: https://github.com/apache/cloudstack/pull/5506#discussion_r798289437
##########
File path:
plugins/hypervisors/kvm/src/main/java/org/apache/cloudstack/utils/linux/KVMHostInfo.java
##########
@@ -80,16 +82,39 @@ public long getOverCommitMemory() {
}
protected static long getCpuSpeed(final NodeInfo nodeInfo) {
- try (Reader reader = new FileReader(cpuInfoMaxFreqFileName)) {
- Long cpuInfoMaxFreq =
Long.parseLong(IOUtils.toString(reader).trim());
- LOGGER.info(String.format("Retrieved value [%s] from file [%s].
This corresponds to a CPU speed of [%s] MHz.", cpuInfoMaxFreq,
cpuInfoMaxFreqFileName, cpuInfoMaxFreq / 1000));
- return cpuInfoMaxFreq / 1000;
- } catch (IOException | NumberFormatException e) {
- LOGGER.error(String.format("Unable to retrieve the CPU speed from
file [%s]. Using the value [%s] provided by the Libvirt.",
cpuInfoMaxFreqFileName, nodeInfo.mhz), e);
+ try {
+ return getCpuSpeedInternal();
+ } catch (IOException | NumberFormatException ex) {
+ LOGGER.error(String.format("Unable to retrieve the CPU speed from
file [%s] and lscpu. Using the value [%s] provided by the Libvirt.",
cpuInfoMaxFreqFileName, nodeInfo.mhz), ex);
return nodeInfo.mhz;
}
}
+ private static long getCpuSpeedInternal() throws IOException {
+ try {
+ return getCpuSpeedFromCommandLscpu();
+ } catch (NullPointerException | NumberFormatException e) {
+ LOGGER.error(String.format("Unable to retrieve the CPU speed from
lscpu. Using the value in [%s].", cpuInfoMaxFreqFileName), e);
+ return getCpuSpeedFromFile();
+ }
+ }
+
+ private static long getCpuSpeedFromCommandLscpu() {
Review comment:
suggestion:
add try...catch in getCpuSpeedFromCommandLscpu and getCpuSpeedFromFile
if exception is caught, then return the a default value like 0 or -1.
then the getSpeed method will be simple
```
long speed = getCpuSpeedFromCommandLscpu();
if (speed = 0L) {
speed = getCpuSpeedFromFile();
}
if (speed = 0L) {
speed = nodeInfo.mhz;
}
return speed;
```
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