大家好，
我的有问题CPU利用率我正在使用 sar 命令来了解我的 cpu 空闲百分比，其中空闲百分比为空并且%sys %usr利用更多，我正在尝试检查topas、ps 和 nmon没有进程利用实用程序中央处理器但我的 cpu 空闲百分比为空。如果我使用托帕斯要查看高 CPU 使用率的进程，它会显示 topas 使用最大 cpu。输出：
中央处理器利用率
托帕斯
Topas Monitor for host:********
Wed Sep 9 12:46:45 2015 Interval:2
Kernel 84.60 |######################## |
User 15.40 |##### |
Wait 0.00 | |
Idle 0.00 | |
Physc = 0.06 %Resc= 7.61
Network BPS I-Pkts O-Pkts B-In B-Out
Total 1.79K 3.00 3.00 1.39K 403.0
Disk Busy% BPS TPS B-Read B-Writ
Total 0.1 48.0K 3.00 0 48.0K
FileSystem BPS TPS B-Read B-Writ
Total 499K 136.0 499K 0
Name PID CPU% PgSp
topas 20578344 72.5 3.58M
BESClien 7143678 24.8 6.11M
java 27328718 0.8 178M
oracle 13762772 0.3 3.94M
oracle 7274508 0.3 3.97M
oracle 18874506 0.2 10.4M
oracle 10551546 0.2 4.05M
oracle 11337746 0.2 10.4M
oracle 7077936 0.1 8.47M
oracle 11927742 0.1 6.46M
oracle 7602366 0.1 11.5M
oracle 16580770 0.1 8.47M
sshd 22675700 0.1 1.12M
xntpd 9175168 0.1 524K
oracle 18546864 0.1 18.9M
oracle 24182924 0.0 36.3M
nmon_aix 24051748 0.0 3.16M
oracle 19595324 0.0 7.19M
oracle 17825850 0.0 3.66M
oracle 25493590 0.0 7.70M
SAR输出 萨尔 1 5
13:02:49 %usr %sys %wio %idle physc %entc
13:02:50 11 89 - - 0.08 10.2
13:02:51 7 93 - - 0.08 9.9
13:02:52 15 85 - - 0.08 9.9
13:02:53 65 35 - - 0.22 26.9
13:02:54 12 88 - - 0.07 9.2
Average 33 67 - - 0.10 13.1
奈蒙
CPU-Utilisation-Small-View qqqqqqqqqqqEntitledCPU= 0.80 UsedCPU= 0.295qqqqqqqqqqqqqqqqqqqqqqqqqq
Logical CPUs 0----------25-----------50----------75----------100
CPU User% Sys% Wait% Idle%| | | | |
0 11.6 18.7 0.0 69.7|UUUUUsssssssss > |
1 5.5 1.5 1.0 92.0|UU > |
2 0.0 0.0 0.0 100.0| > |
3 0.0 0.0 0.0 100.0| > |
EntitleCapacity/VirtualCPU +-----------|------------|-----------|------------+
EC 12.1 12.2 0.2 12.4|UUUUUUssssssiiiiii-------------------------------|
VP 9.7 9.8 0.2 9.9|UUUUssssiiii-------------------------------------|
EC= 36.9% VP= 29.5% +--Capped---|------------|-SMT=4-----100% VP=1 CPU+
Memory qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
Physical PageSpace | pages/sec In Out | FileSystemCache
% Used 99.1% 11.3% | to Paging Space 0.0 0.0 | (numperm) 23.3%
% Free 0.9% 88.7% | to File System 172.4 1.0 | Process 58.5%
MB Used 24361.7MB 57.7MB | Page Scans 0.0 | System 17.4%
MB Free 214.3MB 454.3MB | Page Cycles 0.0 | Free 0.9%
Total(MB) 24576.0MB 512.0MB | Page Steals 0.0 | ------
| Page Faults 377.2 | Total 100.0%
------------------------------------------------------------ | numclient 0.0%
Min/Maxperm 705MB( 3%) 21138MB( 90%) <--% of RAM | maxclient 90.0%
Min/Maxfree 960 1088 Total Virtual 24.5GB | User 77.5%
Min/Maxpgahead 2 8 Accessed Virtual 17.8GB 72.5%| Pinned 22.2%
| lruable pages 6012560.0
Top-Processes-(163) qqqqqMode=3 [1=Basic 2=CPU 3=Perf 4=Size 5=I/O 6=Cmds]qqqqqqqqqqqqqqqqqqqqqqq
PID %CPU Size Res Res Res Char RAM Paging Command
Used KB Set Text Data I/O Use io other repage
25821292 9.0 93220 134592 128536 6056 14 1% 0 0 0 oracle
14876786 7.6 6280 6492 740 5752 1 0% 0 0 0 topas_nmon
7143678 1.2 19152 22380 16128 6252 99 0% 176 0 0 BESClient
19136722 0.3 92628 134000 128536 5464 94 1% 0 203 0 oracle
0 0.0 384 384 0 384 0 0% 0 0 0 Swapper
27328718 0.0 182628 182680 128 182552 0 1% 0 0 0 java
7274508 0.0 91228 132600 128536 4064 0 1% 0 0 0 oracle
13762772 0.0 91200 132572 128536 4036 0 1% 0 0 0 oracle
16449756 0.0 93044 134416 128536 5880 0 1% 0 0 0 oracle
7602366 0.0 98924 140296 128536 11760 0 1% 0 0 0 oracle
11337746 0.0 97816 139188 128536 10652 0 1% 0 0 0 oracle
24182924 0.0 124348 165720 128536 37184 0 1% 0 0 0 oracle
19857490 0.0 94096 135468 128536 6932 0 1% 0 0 0 oracle
18874506 0.0 97836 139208 128536 10672 0 1% 0 0 0 oracle
16580770 0.0 95836 137208 128536 8672 1 1% 0 0 0 oracle
11927742 0.0 93784 135156 128536 6620 0 1% 0 0 0 oracle
9175168 0.0 712 780 256 524 0 0% 0 0 0 xntpd
22675700 0.0 2164 4256 3104 1152 2 0% 0 0 0 sshd
18546864 0.0 106488 147860 128536 19324 0 1% 0 0 0 oracle
24051748 0.0 3440 3764 532 3232 0 0% 0 0 0 nmon_aix53
15269924 0.0 109204 150576 128536 22040 0 1% 0 0 0 oracle
13434942 0.0 2052 2320 1268 1052 0 0% 0 0 0 sendmail
6488076 0.0 380 392 36 356 0 0% 0 0 0 syslogd
17825850 0.0 90916 132288 128536 3752 0 1% 0 0 0 oracle
8650866 0.0 512 528 56 472 0 0% 0 0 0 cron
19595324 0.0 94524 135896 128536 7360 0 1% 0 0 0 oracle
14811336 0.0 1732 1772 116 1656 0 0% 0 0 0 vmstat
3735760 0.0 90884 132256 128536 3720 0 1% 0 0 0 oracle
12779648 0.0 6972 7480 1048 6432 0 0% 0 0 0 rmcd
4718734 0.0 28004 36132 22752 13380 0 0% 0 0 0 tnslsnr
6684926 0.0 13256 13924 2084 11840 0 0% 0 0 0 nsrexecd
如何降低CPU占用率？