Lines Matching +full:vm +full:- +full:active +full:- +full:channels
1 .. SPDX-License-Identifier: GPL-2.0
24 1.1 Process-Specific Subdirectories
36 3 Per-Process Parameters
37 3.1 /proc/<pid>/oom_adj & /proc/<pid>/oom_score_adj - Adjust the oom-killer
39 3.2 /proc/<pid>/oom_score - Display current oom-killer score
40 3.3 /proc/<pid>/io - Display the IO accounting fields
41 3.4 /proc/<pid>/coredump_filter - Core dump filtering settings
42 3.5 /proc/<pid>/mountinfo - Information about mounts
44 3.7 /proc/<pid>/task/<tid>/children - Information about task children
45 3.8 /proc/<pid>/fdinfo/<fd> - Information about opened file
46 3.9 /proc/<pid>/map_files - Information about memory mapped files
47 3.10 /proc/<pid>/timerslack_ns - Task timerslack value
48 3.11 /proc/<pid>/patch_state - Livepatch patch operation state
49 3.12 /proc/<pid>/arch_status - Task architecture specific information
60 ------------------------
68 we know, it is the first 'all-in-one' document about the /proc file system. It
71 It also only covers IPv4 networking, not IPv6 nor other protocols - sorry. But
87 http://tldp.org/LDP/Linux-Filesystem-Hierarchy/html/proc.html
90 mailing list at linux-kernel@vger.kernel.org and/or try to reach me at
94 ---------------
104 ---------------
111 ------------------------------------------------------------------------------
117 First, we'll take a look at the read-only parts of /proc. In Chapter 2, we
120 1.1 Process-Specific Subdirectories
121 -----------------------------------
127 subdirectory has the entries listed in Table 1-1.
137 .. table:: Table 1-1: Process specific entries in /proc
156 symbol the task is blocked in - or "0" if not blocked.
219 file /proc/PID/status. It fields are described in table 1-2.
222 memory usage. Its seven fields are explained in Table 1-3. The stat file
224 explained in Table 1-4.
233 .. table:: Table 1-2: Contents of the status files (as of 4.19)
304 .. table:: Table 1-3: Contents of the statm files (as of 2.6.8-rc3)
322 .. table:: Table 1-4: Contents of the stat files (as of 2.6.30-rc7)
391 08048000-08049000 r-xp 00000000 03:00 8312 /opt/test
392 08049000-0804a000 rw-p 00001000 03:00 8312 /opt/test
393 0804a000-0806b000 rw-p 00000000 00:00 0 [heap]
394 a7cb1000-a7cb2000 ---p 00000000 00:00 0
395 a7cb2000-a7eb2000 rw-p 00000000 00:00 0
396 a7eb2000-a7eb3000 ---p 00000000 00:00 0
397 a7eb3000-a7ed5000 rw-p 00000000 00:00 0
398 a7ed5000-a8008000 r-xp 00000000 03:00 4222 /lib/libc.so.6
399 a8008000-a800a000 r--p 00133000 03:00 4222 /lib/libc.so.6
400 a800a000-a800b000 rw-p 00135000 03:00 4222 /lib/libc.so.6
401 a800b000-a800e000 rw-p 00000000 00:00 0
402 a800e000-a8022000 r-xp 00000000 03:00 14462 /lib/libpthread.so.0
403 a8022000-a8023000 r--p 00013000 03:00 14462 /lib/libpthread.so.0
404 a8023000-a8024000 rw-p 00014000 03:00 14462 /lib/libpthread.so.0
405 a8024000-a8027000 rw-p 00000000 00:00 0
406 a8027000-a8043000 r-xp 00000000 03:00 8317 /lib/ld-linux.so.2
407 a8043000-a8044000 r--p 0001b000 03:00 8317 /lib/ld-linux.so.2
408 a8044000-a8045000 rw-p 0001c000 03:00 8317 /lib/ld-linux.so.2
409 aff35000-aff4a000 rw-p 00000000 00:00 0 [stack]
410 ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]
442 08048000-080bc000 r-xp 00000000 03:02 13130 /bin/bash
508 "Swap" shows how much would-be-anonymous memory is also used, but out on swap.
511 replaced by copy-on-write) part of the underlying shmem object out on swap.
516 pages - 1 if true, 0 otherwise. It just shows the current status.
555 be vanished or the reverse -- new added. Interpretation of their meaning
578 - Pss_Anon
579 - Pss_File
580 - Pss_Shmem
590 soft-dirty bit on pte (see Documentation/admin-guide/mm/soft-dirty.rst
604 To clear the soft-dirty bit::
618 Documentation/admin-guide/mm/pagemap.rst.
627 00400000 default file=/usr/local/bin/app mapped=1 active=0 N3=1 kernelpagesize_kB=4
629 3206000000 default file=/lib64/ld-2.12.so mapped=26 mapmax=6 N0=24 N3=2 kernelpagesize_kB=4
630 320621f000 default file=/lib64/ld-2.12.so anon=1 dirty=1 N3=1 kernelpagesize_kB=4
631 3206220000 default file=/lib64/ld-2.12.so anon=1 dirty=1 N3=1 kernelpagesize_kB=4
633 …3206800000 default file=/lib64/libc-2.12.so mapped=59 mapmax=21 active=55 N0=41 N3=18 kernelpagesi…
634 320698b000 default file=/lib64/libc-2.12.so
635 3206b8a000 default file=/lib64/libc-2.12.so anon=2 dirty=2 N3=2 kernelpagesize_kB=4
636 3206b8e000 default file=/lib64/libc-2.12.so anon=1 dirty=1 N3=1 kernelpagesize_kB=4
637 3206b8f000 default anon=3 dirty=3 active=1 N3=3 kernelpagesize_kB=4
639 7f4dc10b4000 default anon=2 dirty=2 active=1 N3=2 kernelpagesize_kB=4
642 7fff3369d000 default mapped=1 mapmax=35 active=0 N3=1 kernelpagesize_kB=4
648 "policy" reports the NUMA memory policy set for the mapping (see Documentation/admin-guide/mm/numa_…
655 ---------------
659 /proc and are listed in Table 1-5. Not all of these will be present in your
663 .. table:: Table 1-5: Kernel info in /proc
674 dma Used DMS channels
698 pci Deprecated info of PCI bus (new way -> /proc/bus/pci/,
720 0: 8728810 XT-PIC timer
721 1: 895 XT-PIC keyboard
722 2: 0 XT-PIC cascade
723 3: 531695 XT-PIC aha152x
724 4: 2014133 XT-PIC serial
725 5: 44401 XT-PIC pcnet_cs
726 8: 2 XT-PIC rtc
727 11: 8 XT-PIC i82365
728 12: 182918 XT-PIC PS/2 Mouse
729 13: 1 XT-PIC fpu
730 14: 1232265 XT-PIC ide0
731 15: 7 XT-PIC ide1
740 0: 1243498 1214548 IO-APIC-edge timer
741 1: 8949 8958 IO-APIC-edge keyboard
742 2: 0 0 XT-PIC cascade
743 5: 11286 10161 IO-APIC-edge soundblaster
744 8: 1 0 IO-APIC-edge rtc
745 9: 27422 27407 IO-APIC-edge 3c503
746 12: 113645 113873 IO-APIC-edge PS/2 Mouse
747 13: 0 0 XT-PIC fpu
748 14: 22491 24012 IO-APIC-edge ide0
749 15: 2183 2415 IO-APIC-edge ide1
750 17: 30564 30414 IO-APIC-level eth0
751 18: 177 164 IO-APIC-level bttv
761 ERR is incremented in the case of errors in the IO-APIC bus (the bus that
763 the IO-APIC automatically retry the transmission, so it should not be a big
764 problem, but you should read the SMP-FAQ.
829 1024-1031
831 The default_smp_affinity mask applies to all non-active IRQs, which are the
833 /proc/irq/[0-9]* directory.
842 The way IRQs are routed is handled by the IO-APIC, and it's Round Robin
845 best choice for almost everyone. [Note this applies only to those IO-APIC's
903 X86-64. By keeping pages grouped based on their ability to move, the kernel
904 can reclaim pages within a page block to satisfy a high-order allocation.
908 by migrate-type and finishes with details on how many page blocks of each
937 Active: 891636 kB
987 in-memory cache for files read from the disk (the
994 Active
1021 Non-file backed pages mapped into userspace page tables
1026 Non-file backed huge pages mapped into userspace page tables
1041 in-kernel data structures cache
1057 Based on the overcommit ratio ('vm.overcommit_ratio'),
1061 'vm.overcommit_memory').
1065 CommitLimit = ([total RAM pages] - [total huge TLB pages]) *
1069 of swap with a `vm.overcommit_ratio` of 30 it would
1073 in vm/overcommit-accounting.
1081 by the VM and can be used at any time by the allocating
1083 (mode 2 in 'vm.overcommit_memory'), allocations which would
1121 0xffffc20000000000-0xffffc20000201000 2101248 alloc_large_system_hash+0x204 ...
1123 0xffffc20000201000-0xffffc20000302000 1052672 alloc_large_system_hash+0x204 ...
1125 0xffffc20000302000-0xffffc20000304000 8192 acpi_tb_verify_table+0x21/0x4f...
1127 0xffffc20000304000-0xffffc20000307000 12288 acpi_tb_verify_table+0x21/0x4f...
1129 0xffffc2000031d000-0xffffc2000031f000 8192 init_vdso_vars+0x112/0x210
1130 0xffffc2000031f000-0xffffc2000032b000 49152 cramfs_uncompress_init+0x2e ...
1132 0xffffc2000033a000-0xffffc2000033d000 12288 sys_swapon+0x640/0xac0 ...
1134 0xffffc20000347000-0xffffc2000034c000 20480 xt_alloc_table_info+0xfe ...
1136 0xffffffffa0000000-0xffffffffa000f000 61440 sys_init_module+0xc27/0x1d00 ...
1138 0xffffffffa000f000-0xffffffffa0014000 20480 sys_init_module+0xc27/0x1d00 ...
1140 0xffffffffa0014000-0xffffffffa0017000 12288 sys_init_module+0xc27/0x1d00 ...
1142 0xffffffffa0017000-0xffffffffa0022000 45056 sys_init_module+0xc27/0x1d00 ...
1167 ----------------------------
1178 ide-cdrom version 4.53
1179 ide-disk version 1.08
1183 directories contains the files shown in table 1-6.
1186 .. table:: Table 1-6: IDE controller info in /proc/ide/ide?
1198 controllers directory. The files listed in table 1-7 are contained in these
1202 .. table:: Table 1-7: IDE device information
1224 ---- ----- --- --- ----
1237 pio_mode write-only 0 255 w
1244 --------------------------------
1246 The subdirectory /proc/net follows the usual pattern. Table 1-8 shows the
1248 support this. Table 1-9 lists the files and their meaning.
1251 .. table:: Table 1-8: IPv6 info in /proc/net
1267 .. table:: Table 1-9: Network info in /proc/net
1304 Inter-|Receive |[...
1323 -------------
1333 Type: Direct-Access ANSI SCSI revision: 03
1335 Vendor: PIONEER Model: CD-ROM DR-U06S Rev: 1.04
1336 Type: CD-ROM ANSI SCSI revision: 02
1343 AHA-2940 SCSI adapter::
1353 SCSI Adapter: Adaptec AHA-294X Ultra SCSI host adapter
1359 SCBs: Active 0, Max Active 2,
1386 ---------------------------------------
1392 These directories contain the four files shown in Table 1-10.
1395 .. table:: Table 1-10: Files in /proc/parport
1400 autoprobe Any IEEE-1284 device ID information that has been acquired.
1411 -------------------------
1415 this directory, as shown in Table 1-11.
1418 .. table:: Table 1-11: Files in /proc/tty
1432 pty_slave /dev/pts 136 0-255 pty:slave
1433 pty_master /dev/ptm 128 0-255 pty:master
1434 pty_slave /dev/ttyp 3 0-255 pty:slave
1435 pty_master /dev/pty 2 0-255 pty:master
1436 serial /dev/cua 5 64-67 serial:callout
1437 serial /dev/ttyS 4 64-67 serial
1442 unknown /dev/tty 4 1-63 console
1446 -------------------------------------------------
1469 - user: normal processes executing in user mode
1470 - nice: niced processes executing in user mode
1471 - system: processes executing in kernel mode
1472 - idle: twiddling thumbs
1473 - iowait: In a word, iowait stands for waiting for I/O to complete. But there
1479 2. In a multi-core CPU, the task waiting for I/O to complete is not running
1485 - irq: servicing interrupts
1486 - softirq: servicing softirqs
1487 - steal: involuntary wait
1488 - guest: running a normal guest
1489 - guest_nice: running a niced guest
1519 -------------------------------
1524 /proc/fs/ext4/dm-0). The files in each per-device directory are shown
1525 in Table 1-12, below.
1527 .. table:: Table 1-12: Files in /proc/fs/ext4/<devname>
1535 -------------------
1542 tty0 -WU (ECp) 4:7
1543 ttyS0 -W- (Ep) 4:64
1547 +--------------------+-------------------------------------------------------+
1553 +--------------------+-------------------------------------------------------+
1560 +--------------------+-------------------------------------------------------+
1563 +--------------------+-------------------------------------------------------+
1566 -------
1579 ---------------
1585 ------------------------------------------------------------------------------
1609 Please see: Documentation/admin-guide/sysctl/ directory for descriptions of these
1613 -------
1622 Chapter 3: Per-process Parameters
1625 3.1 /proc/<pid>/oom_adj & /proc/<pid>/oom_score_adj- Adjust the oom-killer score
1626 --------------------------------------------------------------------------------
1648 is used to determine which task to kill. Acceptable values range from -1000
1651 task or completely disabling it. The lowest possible value, -1000, is
1659 50% more memory. A value of -500, on the other hand, would be roughly
1664 be used to tune the badness score. Its acceptable values range from -16
1665 (OOM_ADJUST_MIN) to +15 (OOM_ADJUST_MAX) and a special value of -17
1674 3.2 /proc/<pid>/oom_score - Display current oom-killer score
1675 -------------------------------------------------------------
1677 This file can be used to check the current score used by the oom-killer for
1679 process should be killed in an out-of-memory situation.
1685 3.3 /proc/<pid>/io - Display the IO accounting fields
1686 -------------------------------------------------------
1752 accurate for block-backed filesystems. <please add status regarding NFS and
1761 the storage layer. This is done at page-dirtying time.
1780 At its current implementation state, this is a bit racy on 32-bit machines:
1782 of those 64-bit counters, process A could see an intermediate result.
1788 3.4 /proc/<pid>/coredump_filter - Core dump filtering settings
1789 ---------------------------------------------------------------
1793 Conversely, sometimes we want to save file-backed memory segments into a core
1803 - (bit 0) anonymous private memory
1804 - (bit 1) anonymous shared memory
1805 - (bit 2) file-backed private memory
1806 - (bit 3) file-backed shared memory
1807 - (bit 4) ELF header pages in file-backed private memory areas (it is
1809 - (bit 5) hugetlb private memory
1810 - (bit 6) hugetlb shared memory
1811 - (bit 7) DAX private memory
1812 - (bit 8) DAX shared memory
1817 Note that bits 0-4 don't affect hugetlb or DAX memory. hugetlb memory is
1818 only affected by bit 5-6, and DAX is only affected by bits 7-8.
1835 3.5 /proc/<pid>/mountinfo - Information about mounts
1836 --------------------------------------------------------
1840 36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue
1876 --------------------------------------------------------
1884 3.7 /proc/<pid>/task/<tid>/children - Information about task children
1885 -------------------------------------------------------------------------
1890 Note the "first level" here -- if a child has its own children they will
1891 not be listed here; one needs to read /proc/<children-pid>/task/<tid>/children
1901 3.8 /proc/<pid>/fdinfo/<fd> - Information about opened file
1902 ---------------------------------------------------------------
1904 files have at least three fields -- 'pos', 'flags' and 'mnt_id'. The 'pos'
1932 eventfd-count: 5a
1934 where 'eventfd-count' is hex value of a counter.
1973 …inotify wd:3 ino:9e7e sdev:800013 mask:800afce ignored_mask:0 fhandle-bytes:8 fhandle-type:1 f_han…
1982 fields 'fhandle-bytes', 'fhandle-type' and 'f_handle', all in hex
1995 fanotify flags:10 event-flags:0
1997 …fanotify ino:4f969 sdev:800013 mflags:0 mask:3b ignored_mask:40000000 fhandle-bytes:8 fhandle-type…
1999 where fanotify 'flags' and 'event-flags' are values used in fanotify_init
2033 3.9 /proc/<pid>/map_files - Information about memory mapped files
2034 ---------------------------------------------------------------------
2038 | lr-------- 1 root root 64 Jan 27 11:24 333c600000-333c620000 -> /usr/lib64/ld-2.18.so
2039 | lr-------- 1 root root 64 Jan 27 11:24 333c81f000-333c820000 -> /usr/lib64/ld-2.18.so
2040 | lr-------- 1 root root 64 Jan 27 11:24 333c820000-333c821000 -> /usr/lib64/ld-2.18.so
2042 | lr-------- 1 root root 64 Jan 27 11:24 35d0421000-35d0422000 -> /usr/lib64/libselinux.so.1
2043 | lr-------- 1 root root 64 Jan 27 11:24 400000-41a000 -> /usr/bin/ls
2046 vm_area_struct::vm_start-vm_area_struct::vm_end.
2055 3.10 /proc/<pid>/timerslack_ns - Task timerslack value
2056 ---------------------------------------------------------
2066 Valid values are from 0 - ULLONG_MAX
2071 3.11 /proc/<pid>/patch_state - Livepatch patch operation state
2072 -----------------------------------------------------------------
2076 A value of '-1' indicates that no patch is in transition.
2088 3.12 /proc/<pid>/arch_status - task architecture specific status
2089 -------------------------------------------------------------------
2129 A special value of '-1' indicates that no AVX512 usage was recorded, thus
2137 ---------------------
2147 hidepid=off or hidepid=0 means classic mode - everybody may access all
2161 by "kill -0 $PID"), but it hides process' uid and gid, which may be learned by
2190 # strace -e mount mount -o hidepid=1 -t proc proc /tmp/proc
2201 # mount -o remount,hidepid=1 -t proc proc /tmp/proc
2214 # mount -o hidepid=invisible -t proc proc /proc
2215 # mount -o hidepid=noaccess -t proc proc /tmp/proc