toybox: toys/other/vmstat.c annotate

annotate toys/other/vmstat.c @ 1727:c0ef9b7976f0 draft

Use xsignal() instead of signal().

author	Rob Landley <rob@landley.net>
date	Tue, 10 Mar 2015 11:07:28 -0500
parents	6eee35009294
children

rev	line source
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	1 /* vmstat.c - Report virtual memory statistics.
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	2 *
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	3 * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	4
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	5 USE_VMSTAT(NEWTOY(vmstat, ">2n", TOYFLAG_BIN))
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	6
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	7 config VMSTAT
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	8 bool "vmstat"
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	9 default y
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	10 help
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	11 usage: vmstat [-n] [DELAY [COUNT]]
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	12
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	13 Print virtual memory statistics, repeating each DELAY seconds, COUNT times.
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	14 (With no DELAY, prints one line. With no COUNT, repeats until killed.)
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	15
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	16 Show processes running and blocked, kilobytes swapped, free, buffered, and
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	17 cached, kilobytes swapped in and out per second, file disk blocks input and
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	18 output per second, interrupts and context switches per second, percent
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	19 of CPU time spent running user code, system code, idle, and awaiting I/O.
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	20 First line is since system started, later lines are since last line.
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	21
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	22 -n Display the header only once
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	23 */
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	24
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	25 #define FOR_vmstat
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	26 #include "toys.h"
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	27
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	28 struct vmstat_proc {
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	29 // From /proc/stat (jiffies)
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	30 uint64_t user, nice, sys, idle, wait, irq, sirq, intr, ctxt, running, blocked;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	31 // From /proc/meminfo (units are kb)
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	32 uint64_t memfree, buffers, cached, swapfree, swaptotal;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	33 // From /proc/vmstat (units are pages)
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	34 uint64_t io_in, io_out, swap_in, swap_out;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	35 };
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	36
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	37 // All the elements of vmstat_proc are the same size, so we can populate it as
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	38 // a big array, then read the elements back out by name
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	39 void get_vmstat_proc(struct vmstat_proc *vmstat_proc)
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	40 {
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	41 char *vmstuff[] = { "/proc/stat", "cpu ", 0, 0, 0, 0, 0, 0,
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	42 "intr ", "ctxt ", "procs_running ", "procs_blocked ", "/proc/meminfo",
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	43 "MemFree: ", "Buffers: ", "Cached: ", "SwapFree: ", "SwapTotal: ",
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	44 "/proc/vmstat", "pgpgin ", "pgpgout ", "pswpin ", "pswpout " };
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	45 uint64_t new = (uint64_t )vmstat_proc;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	46 char p = p, name = name;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	47 int i, j;
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	48
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	49 // We use vmstuff to fill out vmstat_proc as an array of uint64_t:
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	50 // Strings starting with / are the file to find next entries in
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	51 // Any other string is a key to search for, with decimal value right after
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	52 // 0 means parse another value on same line as last key
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	53
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	54 for (i = 0; i<sizeof(vmstuff)/sizeof(char *); i++) {
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	55 if (!vmstuff[i]) p++;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	56 else if (*vmstuff[i] == '/') {
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	57 xreadfile(name = vmstuff[i], toybuf, sizeof(toybuf));
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	58
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	59 continue;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	60 } else {
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	61 if (!(p = strstr(toybuf, vmstuff[i]))) goto error;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	62 p += strlen(vmstuff[i]);
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	63 }
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	64 if (1 != sscanf(p, "%"PRIu64"%n", new++, &j)) goto error;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	65 p += j;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	66 }
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	67
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	68 return;
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	69
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	70 error:
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	71 error_exit("No %sin %s\n", vmstuff[i], name);
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	72 }
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	73
120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	74 void vmstat_main(void)
561 c97e338a4126 toybuf usage enhancement, tabs to spaces, teminal height refresh Elie De Brauwer <eliedebrauwer@gmail.com> parents: 559 diff changeset	75 {
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	76 struct vmstat_proc top[2];
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	77 int i, loop_delay = 0, loop_max = 0;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	78 unsigned loop, rows = (toys.optflags & FLAG_n) ? 0 : 25,
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	79 page_kb = sysconf(_SC_PAGESIZE)/1024;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	80 char *headers="r\0b\0swpd\0free\0buff\0cache\0si\0so\0bi\0bo\0in\0cs\0us\0"
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	81 "sy\0id\0wa", lengths[] = {2,2,6,6,6,6,4,4,5,5,4,4,2,2,2,2};
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	82
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	83 memset(top, 0, sizeof(top));
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	84 if (toys.optc) loop_delay = atolx_range(toys.optargs[0], 0, INT_MAX);
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	85 if (toys.optc > 1) loop_max = atolx_range(toys.optargs[1], 1, INT_MAX) - 1;
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	86
1596 6eee35009294 Fix bug pointed out by Elliott Hughes ("vmstat 1" should repeat endlessly), and remove final delay (after all output) for "vmstat 2 3" case. Rob Landley <rob@landley.net> parents: 1171 diff changeset	87 for (loop = 0; !loop_max \|\| loop <= loop_max; loop++) {
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	88 unsigned idx = loop&1, offset = 0, expected = 0;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	89 uint64_t units, total_hz, ptr = (uint64_t )(top+idx),
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	90 oldptr = (uint64_t )(top+!idx);
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	91
1596 6eee35009294 Fix bug pointed out by Elliott Hughes ("vmstat 1" should repeat endlessly), and remove final delay (after all output) for "vmstat 2 3" case. Rob Landley <rob@landley.net> parents: 1171 diff changeset	92 if (loop && loop_delay) sleep(loop_delay);
6eee35009294 Fix bug pointed out by Elliott Hughes ("vmstat 1" should repeat endlessly), and remove final delay (after all output) for "vmstat 2 3" case. Rob Landley <rob@landley.net> parents: 1171 diff changeset	93
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	94 // Print headers
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	95 if (rows>3 && !(loop % (rows-3))) {
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	96 if (isatty(1)) terminal_size(0, &rows);
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	97 else rows = 0;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	98
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	99 printf("procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----\n");
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	100
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	101 for (i=0; i<sizeof(lengths); i++) {
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	102 printf(" %*s"+!i, lengths[i], headers);
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	103 headers += strlen(headers)+1;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	104 }
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	105 xputc('\n');
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	106 }
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	107
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	108 // Read data and combine some fields we display as aggregates
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	109 get_vmstat_proc(top+idx);
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	110 top[idx].running--; // Don't include ourselves
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	111 top[idx].user += top[idx].nice;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	112 top[idx].sys += top[idx].irq + top[idx].sirq;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	113 top[idx].swaptotal -= top[idx].swapfree;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	114
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	115 // Collect unit adjustments (outside the inner loop to save time)
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	116
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	117 if (!loop) {
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	118 char *s = toybuf;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	119
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	120 xreadfile("/proc/uptime", toybuf, sizeof(toybuf)-1);
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	121 while (*(s++) > ' ');
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	122 sscanf(s, "%"PRIu64, &units);
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	123 } else units = loop_delay;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	124
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	125 // add up user, sys, idle, and wait time used since last time
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	126 // (Already appended nice to user)
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	127 total_hz = 0;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	128 for (i=0; i<4; i++) total_hz += ptr[i+!!i] - oldptr[i+!!i];
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	129
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	130 // Output values in order[]: running, blocked, swaptotal, memfree, buffers,
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	131 // cache, swap_in, swap_out, io_in, io_out, sirq, ctxt, user, sys, idle,wait
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	132
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	133 for (i=0; i<sizeof(lengths); i++) {
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	134 char order[] = {9, 10, 15, 11, 12, 13, 18, 19, 16, 17, 6, 8, 0, 2, 3, 4};
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	135 uint64_t out = ptr[order[i]];
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	136 int len;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	137
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	138 // Adjust rate and units
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	139 if (i>5) out -= oldptr[order[i]];
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	140 if (order[i]<7) out = ((out*100) + (total_hz/2)) / total_hz;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	141 else if (order[i]>15) out = ((out * page_kb)+(units-1))/units;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	142 else if (order[i]<9) out = (out+(units-1)) / units;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	143
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	144 // If a field was too big to fit in its slot, try to compensate later
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	145 expected += lengths[i] + !!i;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	146 len = expected - offset - !!i;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	147 if (len < 0) len = 0;
a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	148 offset += printf(" %*"PRIu64+!i, len, out);
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	149 }
1171 a7df29f72bc6 Cleanup vmstat. Procs, memory, and cpu are reading right, the others not so much. Rob Landley <rob@landley.net> parents: 694 diff changeset	150 xputc('\n');
561 c97e338a4126 toybuf usage enhancement, tabs to spaces, teminal height refresh Elie De Brauwer <eliedebrauwer@gmail.com> parents: 559 diff changeset	151
1596 6eee35009294 Fix bug pointed out by Elliott Hughes ("vmstat 1" should repeat endlessly), and remove final delay (after all output) for "vmstat 2 3" case. Rob Landley <rob@landley.net> parents: 1171 diff changeset	152 if (!loop_delay) break;
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	153 }
559 120b3dde7cf4 Adding vmstat Elie De Brauwer <eliedebrauwer@gmail.com> parents: diff changeset	154 }

Mercurial > hg > toybox

annotate toys/other/vmstat.c @ 1727:c0ef9b7976f0 draft