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Lines 41-46
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#include "config.h" |
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#include "config.h" |
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#define MEMINFO_FILE "/proc/meminfo" |
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#ifdef HAVE_SYS_SYSTEMCFG_H |
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#ifdef HAVE_SYS_SYSTEMCFG_H |
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# include <sys/systemcfg.h> |
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# include <sys/systemcfg.h> |
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#endif |
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#endif |
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Lines 287-303
extern int get_cpu_load(uint32_t *cpu_lo
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extern int get_free_mem(uint64_t *free_mem) |
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extern int get_free_mem(uint64_t *free_mem) |
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{ |
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{ |
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#if defined(__APPLE__) || defined(__NetBSD__) || defined(__FreeBSD__) |
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#if defined(__APPLE__) || defined(__NetBSD__) || defined(__FreeBSD__) |
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/* Not sure how to get CPU load on above systems. |
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/* Not sure how to get free memory on above systems. |
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* Perhaps some method below works. */ |
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* Perhaps some method below works. */ |
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*free_mem = 0; |
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*free_mem = 0; |
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#else |
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#else |
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struct sysinfo info; |
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/* Patch for bug #4635 (https://bugs.schedmd.com/show_bug.cgi?id=4635) |
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* This will only work (in Linux ?) if the line "MemAvailable" is |
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* present in /proc/meminfo. That should be the case in kernel >= 3.13.0 |
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* but it looks like some distributions have backported this to earlier |
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* versions as well. Red Hat/CentOS is one of those. */ |
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/* Get the available memory if possible. */ |
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FILE *meminfo; |
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if ((meminfo = fopen(MEMINFO_FILE, "r")) != NULL) { |
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char line[256]; |
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while (fgets(line, sizeof(line), meminfo) != NULL) { |
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unsigned long availram; |
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if (sscanf(line, "MemAvailable: %lu kB", &availram)) { |
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fclose(meminfo); |
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*free_mem = (uint64_t)(availram/1024); |
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return 0; |
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} |
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} |
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fclose(meminfo); |
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} |
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/* If we couldn't find the amount of available memory in proc, fall back to |
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* the standard Slurm algorithm and just return amount of free RAM. */ |
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struct sysinfo info; |
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if (sysinfo(&info) < 0) { |
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if (sysinfo(&info) < 0) { |
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*free_mem = 0; |
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*free_mem = 0; |
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return errno; |
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return errno; |
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} |
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} |
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*free_mem = (((uint64_t )info.freeram)*info.mem_unit)/(1024*1024); |
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*free_mem = (((uint64_t )info.freeram)*info.mem_unit)/(1024*1024); |
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#endif |
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#endif |
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return 0; |
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return 0; |
