1PCP-ZONEINFO(1) General Commands Manual PCP-ZONEINFO(1)
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6 pcp-zoneinfo - Report statistics for System Zoneinfo.
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9 pcp [pcp options] zoneinfo [-s samples] [-a archive] [-S start_time]
10 [-T end_time] [-Z timezone]
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13 The pcp-zoneinfo command is used for viewing the different kinds of
14 stats related to numa nodes. Using various options it helps a user to
15 analyze useful information related to the zone availability for differ‐
16 ent numa nodes.This file display information about memory zones. This
17 is useful for analyzing virtual memory behavior.By default pcp-zoneinfo
18 reports live data for the local host.
19 The statistics shown are as follows:
21 HEADER DESCRIPTION
24 _ _
25 Per node stats (for each zone for each NUMA node)
27 nr_inactive_anon zone inactive anonymous pages
29 nr_active_anon active anonymous memory pages
30 nr_inactive_file inactive file memory pages
31 nr_active_file active file memory memory pages
32 nr_unevictable unevictable pages
33 nr_slab_reclaimable reclaimable slab pages
34 nr_slab_unreclaimable unreclaimable slab pages
35 nr_isolated_anon isolated anonymous memory pages
36 nr_isolated_file isolated file memory pages
37 nr_anon_pages anonymous mapped pagecache pages
38 nr_mapped mapped pagecache pages
39 nr_file_pages file pagecache pages
40 nr_dirty pages dirty state
41 nr_writeback pages writeback state
42 nr_writeback_temp temporary writeback pages
43 nr_shmem shared memory pages
44 nr_shmem_hugepages shared memory huge pages
45 nr_shmem_pmdmapped shared memory PMD mappings
46 nr_file_hugepages file-backed huge pages
47 nr_file_pmdmapped file-backed PMD mappings
48 nr_anon_transparent_hugepages
49 anonymous transparent huge pages
50 nr_unstable pages in unstable state in each zone
51 nr_vmscan_write pages written from the LRU by the VM scanner
52 The VM is supposed to minimise the number of
53 pages which get written from the LRU (for IO
54 scheduling efficiency and reclaim success).
55 nr_vmscan_immediate_reclaim
56 prioritise for reclaim when writeback ends
57 nr_dirtied pages entering dirty state
58 nr_written pages written out in each zone
59 nr_kernel_misc_reclaimable
60 miscellaneous reclaimable kernel pages
61 Per zone stats (in each zone for each NUMA node)
63 pages free free space
65 min min space
66 low low space
68 high high space
69 spanned spanned space
70 present present space
71 managed managed space
72 protection protection space
73 nr_free_pages number of free pages
74 nr_zone_inactive_anon zone inactive anonymous pages
75 nr_zone_active_anon zone active anonymous pages
76 nr_zone_inactive_file zone inactive file-backed pages
77 nr_zone_active_file zone active file-backed pages
78 nr_zone_unevictable zone unevictable pages
79 nr_zone_write_pending zone write-pending pages
80 nr_mlock pages under mlock
81 nr_page_table_pages page table pages
82 nr_kernel_stack pages of kernel stack
83 nr_bounce bounce buffer pages
84 nr_zspages zsmalloc memory allocator pages
85 nr_free_cma free Contiguous Memory Allocator pages
86 numa_hit successful allocations from preferred
87 NUMA zone
88 numa_miss unsuccessful allocations from preferred
89 NUMA zone
90 numa_foreign foreign NUMA zone allocations
91 numa_interleave interleaved NUMA allocations
92 numa_local successful allocations from local
93 NUMA zone
94 numa_other unsuccessful allocations from local
95 NUMA zone
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99 -a file, --archive=file
100 Fetch /proc/zoneinfo for a specified archive file
101 -s count, --samples=count
103 Get the zoneinfo statistics for specified number of samples
104 count
105 -S, --start=time
107 Filter the samples from the archive from the given time
108 -T, --finish=time
110 Filter the samples from the archive until the given time
111 -V, --version
113 Display version number and exit.
114 -z, --hostzone
116 Use the local timezone of the host that is the source of the
117 performance metrics, as identified by either the -h or the -a
118 options. The default is to use the timezone of the local host.
119 -Z timezone, --timezone=timezone
121 Use timezone for the date and time. Timezone is in the format
122 of the environment variable TZ as described in environ(7).
123 -?, --help
125 Display usage message and exit.
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128 pcp-zoneinfo collects information from /proc/zoneinfo and aims to be
129 command line and output compatible with it.
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132 Environment variables with the prefix PCP_ are used to parameterize the
133 file and directory names used by PCP. On each installation, the file
134 /etc/pcp.conf contains the local values for these variables. The
135 $PCP_CONF variable may be used to specify an alternative configuration
136 file, as described in pcp.conf(5).
137 For environment variables affecting PCP tools, see pmGetOptions(3).
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141 PCPIntro(1), pcp(1), pmParseInterval(3) and environ(7).
142Performance Co-Pilot PCP PCP-ZONEINFO(1)