求教AIX系统内存分配的困惑!!!!!
下面这段内容是topas_nmon关于内存的监控信息,其中物理内存中有个System 15.8%,按总物理内存47G换算,它占了7.4G的物理内存。请问AIX操作系统为什么要占用这么多物理内存?如何查看这部分内存消耗在哪里?
我查看了好多台AIX主机,System部分都在15%至18%直接,哪怕是128G物理内存的主机也是如此。
+-topas_nmon--p=Partitions-------Host=ocadb13--------Refresh=2 secs---11:09.14------------------------------------------------------------------------------+
| Memory ---------------------------------------------------------------------------------------------------------------------------------------------------|
| Physical PageSpace | pages/sec In Out | FileSystemCache |
|% Used 97.6% 34.5% | to Paging Space 0.0 0.0 | (numperm) 53.5% |
|% Free 2.4% 65.5% | to File System 0.0 0.0 | Process 28.3% |
|MB Used 46090.1MB 11312.2MB | Page Scans 0.0 | System 15.8% |
|MB Free 1141.9MB 21455.8MB | Page Cycles 0.0 | Free 2.4% |
|Total(MB) 47232.0MB 32768.0MB | Page Steals 0.0 | ------ |
| | Page Faults 1.0 0 | Total 100.0% |
|------------------------------------------------------------ | numclient 53.5% |
|Min/Maxperm 1374MB( 3%) 41234MB( 90%) <--% of RAM | maxclient 90.0% |
|Min/Maxfree 960 1088 Total Virtual 78.1GB | User 78.9% |
|Min/Maxpgahead 2 8 Accessed Virtual 24.5GB 31.4%| Pinned 17.0% |
| | lruable pages 11728817.0 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------|
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