FreeBSD memory
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Found this cute tool: http://people.freebsd.org/~rse/dist/freebsd-memory
SYSTEM MEMORY INFORMATION:
mem_wire: 50925568 ( 48MB) [ 20%] Wired: disabled for paging out
mem_active: + 34836480 ( 33MB) [ 13%] Active: recently referenced
mem_inactive:+ 87613440 ( 83MB) [ 34%] Inactive: recently not referenced
mem_cache: + 11677696 ( 11MB) [ 4%] Cached: almost avail. for allocation
mem_free: + 68898816 ( 65MB) [ 27%] Free: fully available for allocation
mem_gap_vm: + 528384 ( 0MB) [ 0%] Memory gap: UNKNOWN
–------------ ------------ ----------- ------
mem_all: = 254480384 ( 242MB) [100%] Total real memory managed
mem_gap_sys: + 4947968 ( 4MB) Memory gap: Kernel?!
–------------ ------------ -----------
mem_phys: = 259428352 ( 247MB) Total real memory available
mem_gap_hw: + 9007104 ( 8MB) Memory gap: Segment Mappings?!
mem_hw: = 268435456 ( 256MB) Total real memory installed
SYSTEM MEMORY SUMMARY:
mem_used: 100245504 ( 95MB) [ 37%] Logically used memory
mem_avail: + 168189952 ( 160MB) [ 62%] Logically available memory
–------------ ------------ ----------- ------
mem_total: = 268435456 ( 256MB) [100%] Logically total memoryWrote a php version:
#!/usr/local/bin/php -f /* * freebsd-memory -- List Total System Memory Usage * Copyright (c) 2003-2004 Ralf S. Engelschall <rse@engelschall.com>* * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1\. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2\. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* query the system through the generic sysctl(8) interface * (this does not require special priviledges) */ $sysctl = array(); $fields = array( 'hw.pagesize', 'hw.physmem', 'vm.stats.vm.v_page_count', 'vm.stats.vm.v_wire_count', 'vm.stats.vm.v_active_count', 'vm.stats.vm.v_inactive_count', 'vm.stats.vm.v_cache_count', 'vm.stats.vm.v_free_count' ); $ph = popen('/sbin/sysctl '.join(' ',$fields), 'r'); //$ph = popen('/sbin/sysctl -a', 'r'); while (!feof($ph)) { $line = fgets($ph); $pos = strpos($line, ': '); if ($pos) { $a = substr($line,0,$pos); $b = rtrim(substr($line,$pos+2)); $sysctl[$a] = $b; } } pclose($ph); /* round the physical memory size to the next power of two which is * reasonable for memory cards. We do this by first determining the * guessed memory card size under the assumption that usual computer * hardware has an average of a maximally eight memory cards installed * and those are usually of equal size. */ function mem_rounded($mem_size) { $chip_size = 1; $chip_guess = ($mem_size / 8) - 1; while ($chip_guess != 0) { $chip_guess >>= 1; $chip_size <<= 1; } $mem_round = (intval($mem_size / $chip_size) + 1) * $chip_size; return $mem_round; } /* determine the individual known information * NOTICE: forget hw.usermem, it is just (hw.physmem - vm.stats.vm.v_wire_count). * NOTICE: forget vm.stats.misc.zero_page_count, it is just the subset of * vm.stats.vm.v_free_count which is already pre-zeroed. */ $mem_hw = mem_rounded($sysctl['hw.physmem']); $mem_phys = $sysctl['hw.physmem']; $mem_all = $sysctl['vm.stats.vm.v_page_count'] * $sysctl['hw.pagesize']; $mem_wire = $sysctl['vm.stats.vm.v_wire_count'] * $sysctl['hw.pagesize']; $mem_active = $sysctl['vm.stats.vm.v_active_count'] * $sysctl['hw.pagesize']; $mem_inactive = $sysctl['vm.stats.vm.v_inactive_count'] * $sysctl['hw.pagesize']; $mem_cache = $sysctl['vm.stats.vm.v_cache_count'] * $sysctl['hw.pagesize']; $mem_free = $sysctl['vm.stats.vm.v_free_count'] * $sysctl['hw.pagesize']; // determine the individual unknown information $mem_gap_vm = $mem_all - ($mem_wire + $mem_active + $mem_inactive + $mem_cache + $mem_free); $mem_gap_sys = $mem_phys - $mem_all; $mem_gap_hw = $mem_hw - $mem_phys; // determine logical summary information $mem_total = $mem_hw; $mem_avail = $mem_inactive + $mem_cache + $mem_free; $mem_used = $mem_total - $mem_avail; // information annotations $info = array( "mem_wire" => 'Wired: disabled for paging out', "mem_active" => 'Active: recently referenced', "mem_inactive" => 'Inactive: recently not referenced', "mem_cache" => 'Cached: almost avail. for allocation', "mem_free" => 'Free: fully available for allocation', "mem_gap_vm" => 'Memory gap: UNKNOWN', "mem_all" => 'Total real memory managed', "mem_gap_sys" => 'Memory gap: Kernel?!', "mem_phys" => 'Total real memory available', "mem_gap_hw" => 'Memory gap: Segment Mappings?!', "mem_hw" => 'Total real memory installed', "mem_used" => 'Logically used memory', "mem_avail" => 'Logically available memory', "mem_total" => 'Logically total memory', ); // print system results echo "SYSTEM MEMORY INFORMATION:\n"; echo sprintf("mem_wire: %12d (%7dMB) [%3d%%] %s\n", $mem_wire, $mem_wire / (1024*1024), ($mem_wire / $mem_all) * 100, $info['mem_wire']); echo sprintf("mem_active: + %12d (%7dMB) [%3d%%] %s\n", $mem_active, $mem_active / (1024*1024), ($mem_active / $mem_all) * 100, $info['mem_active']); echo sprintf("mem_inactive:+ %12d (%7dMB) [%3d%%] %s\n", $mem_inactive, $mem_inactive / (1024*1024), ($mem_inactive / $mem_all) * 100, $info['mem_inactive']); echo sprintf("mem_cache: + %12d (%7dMB) [%3d%%] %s\n", $mem_cache, $mem_cache / (1024*1024), ($mem_cache / $mem_all) * 100, $info['mem_cache']); echo sprintf("mem_free: + %12d (%7dMB) [%3d%%] %s\n", $mem_free, $mem_free / (1024*1024), ($mem_free / $mem_all) * 100, $info['mem_free']); echo sprintf("mem_gap_vm: + %12d (%7dMB) [%3d%%] %s\n", $mem_gap_vm, $mem_gap_vm / (1024*1024), ($mem_gap_vm / $mem_all) * 100, $info['mem_gap_vm']); echo "-------------- ------------ ----------- ------\n"; echo sprintf("mem_all: = %12d (%7dMB) [100%%] %s\n", $mem_all, $mem_all / (1024*1024), $info['mem_all']); echo sprintf("mem_gap_sys: + %12d (%7dMB) %s\n", $mem_gap_sys, $mem_gap_sys / (1024*1024), $info['mem_gap_sys']); echo "-------------- ------------ -----------\n"; echo sprintf("mem_phys: = %12d (%7dMB) %s\n", $mem_phys, $mem_phys / (1024*1024), $info['mem_phys']); echo sprintf("mem_gap_hw: + %12d (%7dMB) %s\n", $mem_gap_hw, $mem_gap_hw / (1024*1024), $info['mem_gap_hw']); echo "-------------- ------------ -----------\n"; echo sprintf("mem_hw: = %12d (%7dMB) %s\n", $mem_hw, $mem_hw / (1024*1024), $info['mem_hw']); // print logical results echo "\n"; echo "SYSTEM MEMORY SUMMARY:\n"; echo sprintf("mem_used: %12d (%7dMB) [%3d%%] %s\n", $mem_used, $mem_used / (1024*1024), ($mem_used / $mem_total) * 100, $info['mem_used']); echo sprintf("mem_avail: + %12d (%7dMB) [%3d%%] %s\n", $mem_avail, $mem_avail / (1024*1024), ($mem_avail / $mem_total) * 100, $info['mem_avail']); echo "-------------- ------------ ----------- ------\n"; echo sprintf("mem_total: = %12d (%7dMB) [100%%] %s\n", $mem_total, $mem_total / (1024*1024), $info['mem_total']); ?></rse@engelschall.com> -
Neat
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