VMM 页面替换调整

在线编辑

内存管理算法尝试将空闲列表的大小和永久段页面占用的实内存百分比保持在指定界限内。

Real-memory management中讨论的这些界限可以使用 vmo 命令进行更改，该命令只能由 root 用户运行。 此工具进行的更改会一直有效直到系统重新引导。 为了确定 vmo 命令是否已安装并且可用，请运行以下命令：
# lslpp -lI bos.perf.tune
使用 -a 选项执行 vmo 命令将显示当前参数设置。
注: vmo 命令是自记录命令。 您可能会获得于此处提供的样本输出不同的输出。
# vmo -a
	              ame_cpus_per_pool = n/a
                 ame_maxfree_mem = n/a
             ame_min_ucpool_size = n/a
                 ame_minfree_mem = n/a
                 ams_loan_policy = n/a
    enhanced_affinity_affin_time = 1
  enhanced_affinity_vmpool_limit = 10
                  esid_allocator = 1
             force_relalias_lite = 0
               kernel_heap_psize = 65536
                    lgpg_regions = 0
                       lgpg_size = 0
                 low_ps_handling = 1
                         maxfree = 1088
                         maxperm = 843105
                          maxpin = 953840
                         maxpin% = 90
                   memory_frames = 1048576
                   memplace_data = 0
            memplace_mapped_file = 0
          memplace_shm_anonymous = 0
              memplace_shm_named = 0
                  memplace_stack = 0
                   memplace_text = 0
          memplace_unmapped_file = 0
                         minfree = 960
                         minperm = 28103
                        minperm% = 3
                     msem_nlocks = 0
                       nokilluid = 0
                         npskill = 1024
                         npswarn = 4096
             num_locks_per_semid = 1
                       numpsblks = 131072
                      pgz_lpgrow = 2
                        pgz_mode = 2
                 pinnable_frames = 781272
             relalias_percentage = 0
                           scrub = 0
                   thrpgio_inval = 1024
                  thrpgio_npages = 1024
                        v_pinshm = 0
                   vm_cpu_thresh = 0
                    vm_mmap_bmap = 1
                vmm_default_pspa = 0
                  vmm_klock_mode = 2
              wlm_memlimit_nonpg = 1