Memcg Memfs Info¶
Overview¶
Support to print rootfs files and tmpfs files that having pages charged in given memory cgroup. The files infomations can be printed through interface “memory.memfs_files_info” or printed when OOM is triggered.
User control¶
1. /sys/kernel/mm/memcg_memfs_info/enable¶
Boolean type. The default value is 0, set it to 1 to enable the feature.
2. /sys/kernel/mm/memcg_memfs_info/max_print_files_in_oom¶
Unsigned long type. The default value is 500, indicating that the maximum of files can be print to console when OOM is triggered.
3. /sys/kernel/mm/memcg_memfs_info/size_threshold¶
Unsigned long type. The default value is 0, indicating that the minimum size of files that can be printed.
4. /sys/fs/cgroup/memory/<memory>/memory.memfs_files_info¶
Outputs the files who use memory in this memory cgroup.
— Liu Shixin, Jan 2022