啟用標準大頁后內存使用率下降了

未啟用前

[root@ol819c ~]# free -htotal        used        free      shared  buff/cache   available
Mem:          9.3Gi       984Mi       379Mi       1.5Gi       8.0Gi       6.8Gi
Swap:          15Gi       3.0Mi        15Gi
[root@ol819c ~]# free -htotal        used        free      shared  buff/cache   available
Mem:          9.3Gi       984Mi       379Mi       1.5Gi       8.0Gi       6.8Gi
Swap:          15Gi       3.0Mi        15Gi

啟用后

[root@ol819c ~]# free -htotal        used        free      shared  buff/cache   available
Mem:          9.3Gi       2.6Gi       5.3Gi        10Mi       1.5Gi       6.6Gi
Swap:          15Gi          0B        15Gi
[root@ol819c ~]# free -htotal        used        free      shared  buff/cache   available
Mem:          9.3Gi       2.6Gi       5.3Gi        10Mi       1.5Gi       6.6Gi
Swap:          15Gi          0B        15Gi

02:25:36 PM重新后使用? sar -rh 查看

12:00:00 PM kbmemfree   kbavail kbmemused  %memused kbbuffers  kbcached  kbcommit   %commit  kbactive   kbinact   kbdirty
12:10:00 PM    144.5M      6.7G      9.2G     98.5%      3.3M      8.0G      4.2G     16.6%      4.0G      4.8G      0.0k
12:20:00 PM    144.2M      6.7G      9.2G     98.5%      3.3M      8.0G      4.2G     16.6%      4.0G      4.8G      0.0k
12:30:00 PM    144.2M      6.7G      9.2G     98.5%      3.3M      8.0G      4.2G     16.6%      4.0G      4.8G      0.0k
12:40:00 PM    144.8M      6.7G      9.2G     98.5%      3.3M      8.0G      4.2G     16.6%      4.0G      4.8G      0.0k
12:50:00 PM    144.3M      6.7G      9.2G     98.5%      3.3M      8.0G      4.2G     16.6%      4.0G      4.8G      0.0k
01:00:00 PM    144.0M      6.7G      9.2G     98.5%      3.3M      8.0G      4.2G     16.6%      4.0G      4.8G      0.0k
01:10:00 PM    242.3M      6.7G      9.1G     97.5%      3.3M      7.9G      4.2G     16.6%      4.0G      4.7G      0.0k
01:20:00 PM    242.1M      6.7G      9.1G     97.5%      3.3M      7.9G      4.2G     16.6%      4.0G      4.7G      0.0k
01:30:00 PM    239.4M      6.7G      9.1G     97.5%      3.3M      7.9G      4.2G     16.6%      4.0G      4.7G      0.0k
01:40:00 PM    236.1M      6.7G      9.1G     97.5%      3.3M      7.9G      4.2G     16.6%      4.0G      4.7G      8.0k
01:50:00 PM    208.7M      6.7G      9.1G     97.8%      3.3M      7.9G      4.2G     16.7%      4.0G      4.7G      4.0k
02:00:00 PM    218.3M      6.7G      9.1G     97.7%      3.3M      7.9G      4.2G     16.7%      4.0G      4.7G     16.0k
02:10:00 PM    207.4M      6.7G      9.1G     97.8%      3.3M      7.9G      4.2G     16.7%      4.0G      4.7G      4.0k
02:20:00 PM      2.2G      8.7G      7.2G     76.8%      3.3M      6.5G      2.0G      7.8%      2.9G      4.0G     12.0k
Average:       235.7M      6.7G      9.1G     97.5%      3.3M      7.9G      4.2G     16.5%      3.9G      4.8G      1.1k02:25:36 PM  LINUX RESTART      (4 CPU)02:30:01 PM kbmemfree   kbavail kbmemused  %memused kbbuffers  kbcached  kbcommit   %commit  kbactive   kbinact   kbdirty
02:40:01 PM      5.3G      6.6G      4.1G     43.5%      3.3M      1.4G      2.8G     11.1%    295.7M      1.9G      8.0k
02:50:01 PM      5.4G      6.7G      4.0G     42.5%      3.3M      1.4G      2.7G     10.5%    301.9M      1.9G      8.0k
03:00:00 PM      5.3G      6.7G      4.0G     42.7%      3.3M      1.4G      2.7G     10.6%    302.0M      1.9G      4.0k
Average:         5.3G      6.7G      4.0G     42.9%      3.3M      1.4G      2.7G     10.7%    299.9M      1.9G      6.7k
[root@ol819c ~]#

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