找不到memory.pressure_level文件

rick_cheung

在 /sys/fs/cgroups/memory 目录下没有memory.pressure_level文件。请问是什么原因？谢谢！

humjb_1983

我的几个内核版本中都没有这个文件~，从哪儿看到有这个文件的呢？

rick_cheung

我用的内核版本是3.14.4，其中Documentation/cgroups/memory.txt中有这么一段：
Brief summary of control files.
tasks                                 # attach a task(thread) and show list of threads
cgroup.procs                         # show list of processes
cgroup.event_control                 # an interface for event_fd()
memory.usage_in_bytes                 # show current res_counter usage for memory (See 5.5 for details) memory.memsw.usage_in_bytes         # show current res_counter usage for memory+Swap (See 5.5 for details) memory.limit_in_bytes                 # set/show limit of memory usage
memory.memsw.limit_in_bytes         # set/show limit of memory+Swap usage memory.failcnt                         # show the number of memory usage hits limits
memory.memsw.failcnt                 # show the number of memory+Swap hits limits memory.max_usage_in_bytes         # show max memory usage recorded
memory.memsw.max_usage_in_bytes # show max memory+Swap usage recorded memory.soft_limit_in_bytes         # set/show soft limit of memory usage
memory.stat                         # show various statistics
memory.use_hierarchy                 # set/show hierarchical account enabled
memory.force_empty                 # trigger forced move charge to parent
memory.pressure_level                 # set memory pressure notifications
memory.swappiness                 # set/show swappiness parameter of vmscan (See sysctl's vm.swappiness) memory.move_charge_at_immigrate # set/show controls of moving charges memory.oom_control                 # set/show oom controls.
memory.numa_stat                 # show the number of memory usage per numa node
memory.kmem.limit_in_bytes      # set/show hard limit for kernel memory memory.kmem.usage_in_bytes      # show current kernel memory allocation memory.kmem.failcnt             # show the number of kernel memory usage hits limits memory.kmem.max_usage_in_bytes  # show max kernel memory usage recorded
memory.kmem.tcp.limit_in_bytes  # set/show hard limit for tcp buf memory memory.kmem.tcp.usage_in_bytes  # show current tcp buf memory allocation memory.kmem.tcp.failcnt            # show the number of tcp buf memory usage hits limits memory.kmem.tcp.max_usage_in_bytes # show max tcp buf memory usage recorded

其中就包括了memory.pressure_level回复 2# humjb_1983


   

humjb_1983

呵呵，这个看起来像是配置选项吧？不像是文件~~