问题描述
我使用xen,并且使用 xen top
,我获得了CPU总使用率的百分比:
I am using xen and with xen top
I get the total CPU usage in percentage:
NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_RD VBD_WR VBD_RSECT VBD_WSECT SSID
VM1 -----r 25724 299.4 3025244 12.0 20975616 83.4 12 1 14970253 27308358 1 3 146585 92257 10835706 9976308 0
从上面可以看到,我看到CPU使用率为299%,但是如何从VM中获得CPU的使用总量呢? Top
没有显示总使用量.
As you can see from above I see the CPU usage is 299 %, but how I can get the total CPU usage from a VM ?Top
doesn't show me the total usage.
推荐答案
我们通常看到每个内核100%的CPU.我想至少有3个内核/CPU.
We usually see 100% cpu per core.I guess there are at least 3 cores/cpus.
尝试此操作以计算内核数:
try this to count cores:
grep processor /proc/cpuinfo | wc -l
299%的总CPU使用率.
299% is the total cpu usage.
sar
和 mpstat
通常用于显示系统的CPU使用情况.检查是否安装了 systat
软件包,并使用以下命令显示CPU的总使用量:
sar
and mpstat
are often used to display cpu usage of a system. Check that systat
package is installed and display total cpu usage with:
$ mpstat 1 1
Linux 2.6.32-5-amd64 (debian) 05/01/2016 _x86_64_ (8 CPU)
07:48:51 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
07:48:52 PM all 0.12 0.00 0.50 0.00 0.00 0.00 0.00 0.00 99.38
Average: all 0.12 0.00 0.50 0.00 0.00 0.00 0.00 0.00 99.38
如果您同意CPU利用率为(100-%IDLE):
If you agree that CPU utilisation is (100 - %IDLE):
$ mpstat 1 1 | awk '/^Average/ {print 100-$NF,"%"}'
0.52 %
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