1 #!/usr/sbin/dtrace -s 2 /* 3 * swapinfo.d - print virtual memory info (swap). 4 * Written using DTrace (Solaris 10 3/05) 5 * 6 * Prints swap usage details for RAM and disk based swap. 7 * This script is UNDER CONSTRUCTION, check for newer versions. 8 * 9 * $Id: swapinfo.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ 10 * 11 * USAGE: swapinfo.d (check for newer versions) 12 * 13 * FIELDS: 14 * RAM Total Total RAM installed 15 * RAM Unusable RAM consumed by the OBP and TSBs 16 * RAM Kernel Kernel resident in RAM (and usually locked) 17 * RAM Locked Locked memory pages from swap (Anon) 18 * RAM Used anon + exec + file pages used 19 * RAM Free free memory + page cache free 20 * Disk Total Total disk swap configured 21 * Disk Resv Disk swap allocated + reserved 22 * Disk Avail Disk swap available for reservation 23 * Swap Total Total Virtual Memory usable 24 * Swap Resv VM allocated + reserved 25 * Swap Avail VM available for reservation 26 * Swap MinFree VM kept free from reservations 27 * 28 * SEE ALSO: swapinfo - K9Toolkit, http://www.brendangregg.com/k9toolkit.html 29 * vmstat 1 2; swap -s; echo ::memstat | mdb -k 30 * RMCmem - The MemTool Package 31 * RICHPse - The SE Toolkit 32 * "Clearing up swap space confusion" Unix Insider, Adrian Cockcroft 33 * "Solaris Internals", Jim Mauro, Richard McDougall 34 * /usr/include/vm/anon.h, /usr/include/sys/systm.h 35 * 36 * COPYRIGHT: Copyright (c) 2005, 2006 Brendan Gregg. 37 * 38 * CDDL HEADER START 39 * 40 * The contents of this file are subject to the terms of the 41 * Common Development and Distribution License, Version 1.0 only 42 * (the "License"). You may not use this file except in compliance 43 * with the License. 44 * 45 * You can obtain a copy of the license at Docs/cddl1.txt 46 * or http://www.opensolaris.org/os/licensing. 47 * See the License for the specific language governing permissions 48 * and limitations under the License. 49 * 50 * CDDL HEADER END 51 * 52 * Author: Brendan Gregg [Sydney, Australia] 53 * 54 * 11-Jun-2005 Brendan Gregg Created this. 55 * 24-Apr-2006 " " Improved disk measurements; changed terms. 56 * 24-Apr-2006 " " Last update. 57 */ 58 59 #pragma D option quiet 60 #pragma D option bufsize=16k 61 62 inline int DEBUG = 0; 63 64 dtrace:::BEGIN 65 { 66 /* Debug stats */ 67 this->ani_max = `k_anoninfo.ani_max; 68 this->ani_phys_resv = `k_anoninfo.ani_phys_resv; 69 this->ani_mem_resv = `k_anoninfo.ani_mem_resv; 70 this->ani_locked = `k_anoninfo.ani_locked_swap; 71 this->availrmem = `availrmem; 72 73 /* RAM stats */ 74 this->ram_total = `physinstalled; 75 this->unusable = `physinstalled - `physmem; 76 this->locked = `pages_locked; 77 this->ram_used = `availrmem - `freemem; 78 this->freemem = `freemem; 79 this->kernel = `physmem - `pages_locked - `availrmem; 80 81 /* Disk stats */ 82 this->disk_total = `k_anoninfo.ani_max; 83 this->disk_resv = `k_anoninfo.ani_phys_resv; 84 this->disk_avail = this->disk_total - this->disk_resv; 85 86 /* Total Swap stats */ 87 this->minfree = `swapfs_minfree; 88 this->reserve = `swapfs_reserve; 89 /* this is TOTAL_AVAILABLE_SWAP from /usr/include/vm/anon.h, */ 90 this->swap_total = `k_anoninfo.ani_max + 91 (`availrmem - `swapfs_minfree > 0 ? 92 `availrmem - `swapfs_minfree : 0); 93 /* this is CURRENT_TOTAL_AVAILABLE_SWAP from /usr/include/vm/anon.h, */ 94 this->swap_avail = `k_anoninfo.ani_max - `k_anoninfo.ani_phys_resv + 95 (`availrmem - `swapfs_minfree > 0 ? 96 `availrmem - `swapfs_minfree : 0); 97 this->swap_resv = this->swap_total - this->swap_avail; 98 99 /* Convert to Mbytes */ 100 this->ani_phys_resv *= `_pagesize; this->ani_phys_resv /= 1048576; 101 this->ani_mem_resv *= `_pagesize; this->ani_mem_resv /= 1048576; 102 this->ani_locked *= `_pagesize; this->ani_locked /= 1048576; 103 this->ani_max *= `_pagesize; this->ani_max /= 1048576; 104 this->availrmem *= `_pagesize; this->availrmem /= 1048576; 105 this->ram_total *= `_pagesize; this->ram_total /= 1048576; 106 this->unusable *= `_pagesize; this->unusable /= 1048576; 107 this->kernel *= `_pagesize; this->kernel /= 1048576; 108 this->locked *= `_pagesize; this->locked /= 1048576; 109 this->ram_used *= `_pagesize; this->ram_used /= 1048576; 110 this->freemem *= `_pagesize; this->freemem /= 1048576; 111 this->disk_total *= `_pagesize; this->disk_total /= 1048576; 112 this->disk_resv *= `_pagesize; this->disk_resv /= 1048576; 113 this->disk_avail *= `_pagesize; this->disk_avail /= 1048576; 114 this->swap_total *= `_pagesize; this->swap_total /= 1048576; 115 this->swap_avail *= `_pagesize; this->swap_avail /= 1048576; 116 this->swap_resv *= `_pagesize; this->swap_resv /= 1048576; 117 this->minfree *= `_pagesize; this->minfree /= 1048576; 118 this->reserve *= `_pagesize; this->reserve /= 1048576; 119 120 /* Print debug */ 121 DEBUG ? printf("DEBUG availrmem %5d MB\n", this->availrmem) : 1; 122 DEBUG ? printf("DEBUG freemem %5d MB\n", this->freemem) : 1; 123 DEBUG ? printf("DEBUG ani_max %5d MB\n", this->ani_max) : 1; 124 DEBUG ? printf("DEBUG ani_phys_re %5d MB\n", this->ani_phys_resv) : 1; 125 DEBUG ? printf("DEBUG ani_mem_re %5d MB\n", this->ani_mem_resv) : 1; 126 DEBUG ? printf("DEBUG ani_locked %5d MB\n", this->ani_locked) : 1; 127 DEBUG ? printf("DEBUG reserve %5d MB\n", this->reserve) : 1; 128 DEBUG ? printf("\n") : 1; 129 130 /* Print report */ 131 printf("RAM _______Total %5d MB\n", this->ram_total); 132 printf("RAM Unusable %5d MB\n", this->unusable); 133 printf("RAM Kernel %5d MB\n", this->kernel); 134 printf("RAM Locked %5d MB\n", this->locked); 135 printf("RAM Used %5d MB\n", this->ram_used); 136 printf("RAM Free %5d MB\n", this->freemem); 137 printf("\n"); 138 printf("Disk _______Total %5d MB\n", this->disk_total); 139 printf("Disk Resv %5d MB\n", this->disk_resv); 140 printf("Disk Avail %5d MB\n", this->disk_avail); 141 printf("\n"); 142 printf("Swap _______Total %5d MB\n", this->swap_total); 143 printf("Swap Resv %5d MB\n", this->swap_resv); 144 printf("Swap Avail %5d MB\n", this->swap_avail); 145 printf("Swap (Minfree) %5d MB\n", this->minfree); 146 147 DEBUG ? printf("\nNow run other commands for confirmation.\n") : 1; 148 ! DEBUG ? exit(0) : 1; 149 } 150