From: Jeremy Katz Date: Sat, 21 Sep 2013 16:00:01 +0000 (+0200) Subject: Support sending percentages for memory utilization X-Git-Tag: collectd-5.5.0~288^2~15 X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=1aa8032d546fec75d3ad8b7cccfe373a272dfe63;p=collectd.git Support sending percentages for memory utilization Allow setting ReportPercentage and ReportAbsolute to enable sending percentages of memory usage instead of absolute values. This is useful when trying to compare across a heterogeneous set of systems. Signed-off-by: Florian Forster --- diff --git a/src/memory.c b/src/memory.c index 6a501610..7f477ec5 100644 --- a/src/memory.c +++ b/src/memory.c @@ -90,6 +90,39 @@ static perfstat_memory_total_t pmemory; # error "No applicable input method." #endif +static _Bool values_absolute = 1; +static _Bool values_percentage = 0; + +static const char *config_keys[] = +{ + "ValuesAbsolute", + "ValuesPercentage" +}; +static int config_keys_num = STATIC_ARRAY_SIZE (config_keys); + +static int memory_config (const char *key, const char *value) /* {{{ */ +{ + if (strcasecmp (key, "ValuesAbsolute") == 0) + { + if (IS_TRUE (value)) + values_absolute = 1; + else + values_absolute = 0; + + return (0); + } + else if (strcasecmp (key, "ValuesPercentage") == 0) + { + if (IS_TRUE (value)) + values_percentage = 1; + else + values_percentage = 0; + + return (0); + } + return (-1); +} /* }}} int memory_config */ + static int memory_init (void) { #if HAVE_HOST_STATISTICS @@ -162,6 +195,7 @@ static int memory_read (void) gauge_t active; gauge_t inactive; gauge_t free; + gauge_t total; if (!port_host || !pagesize) return (-1); @@ -199,11 +233,22 @@ static int memory_read (void) active = (gauge_t) (((uint64_t) vm_data.active_count) * ((uint64_t) pagesize)); inactive = (gauge_t) (((uint64_t) vm_data.inactive_count) * ((uint64_t) pagesize)); free = (gauge_t) (((uint64_t) vm_data.free_count) * ((uint64_t) pagesize)); + total = wired + active + inactive + free; - memory_submit ("wired", wired); - memory_submit ("active", active); - memory_submit ("inactive", inactive); - memory_submit ("free", free); + if (values_absolute) + { + memory_submit ("wired", wired); + memory_submit ("active", active); + memory_submit ("inactive", inactive); + memory_submit ("free", free); + } + if (values_percentage) + { + memory_submit ("percent_wired", (gauge_t) ((float_t) wired) / total * 100); + memory_submit ("percent_active", (gauge_t) ((float_t) active) / total * 100); + memory_submit ("percent_inactive", (gauge_t) ((float_t) inactive / total * 100); + memory_submit ("percent_free", (gauge_t) ((float_t) free / total * 100); + } /* #endif HAVE_HOST_STATISTICS */ #elif HAVE_SYSCTLBYNAME @@ -253,11 +298,23 @@ static int memory_read (void) if (!isnan (sysctl_vals[i])) sysctl_vals[i] *= sysctl_vals[0]; - memory_submit ("free", sysctl_vals[2]); - memory_submit ("wired", sysctl_vals[3]); - memory_submit ("active", sysctl_vals[4]); - memory_submit ("inactive", sysctl_vals[5]); - memory_submit ("cache", sysctl_vals[6]); + if (values_absolute) + { + memory_submit ("free", sysctl_vals[2]); + memory_submit ("wired", sysctl_vals[3]); + memory_submit ("active", sysctl_vals[4]); + memory_submit ("inactive", sysctl_vals[5]); + memory_submit ("cache", sysctl_vals[6]); + } + if (values_percentage) + { + double total = sysctl_vals[2] + sysctl_vals[3] + sysctl_vals[4] + sysctl_vals[5] + sysctl_vals[6]; + memory_submit ("percent_free", (gauge_t) ((float_t) sysctl_vals[2]) / total * 100); + memory_submit ("percent_wired", (gauge_t) ((float_t) sysctl_vals[3]) / total * 100); + memory_submit ("percent_active", (gauge_t) ((float_t) sysctl_vals[4]) / total * 100); + memory_submit ("percent_inactive", (gauge_t) ((float_t) sysctl_vals[5]) / total * 100); + memory_submit ("percent_cache", (gauge_t) ((float_t) sysctl_vals[6]) / total * 100); + } /* #endif HAVE_SYSCTLBYNAME */ #elif KERNEL_LINUX @@ -267,6 +324,7 @@ static int memory_read (void) char *fields[8]; int numfields; + long long mem_total = 0; long long mem_used = 0; long long mem_buffered = 0; long long mem_cached = 0; @@ -285,7 +343,7 @@ static int memory_read (void) long long *val = NULL; if (strncasecmp (buffer, "MemTotal:", 9) == 0) - val = &mem_used; + val = &mem_total; else if (strncasecmp (buffer, "MemFree:", 8) == 0) val = &mem_free; else if (strncasecmp (buffer, "Buffers:", 8) == 0) @@ -310,13 +368,23 @@ static int memory_read (void) sstrerror (errno, errbuf, sizeof (errbuf))); } - if (mem_used >= (mem_free + mem_buffered + mem_cached)) + if (mem_total >= (mem_free + mem_buffered + mem_cached)) { - mem_used -= mem_free + mem_buffered + mem_cached; - memory_submit ("used", mem_used); - memory_submit ("buffered", mem_buffered); - memory_submit ("cached", mem_cached); - memory_submit ("free", mem_free); + mem_used = mem_total - (mem_free + mem_buffered + mem_cached); + if (values_absolute) + { + memory_submit ("used", mem_used); + memory_submit ("buffered", mem_buffered); + memory_submit ("cached", mem_cached); + memory_submit ("free", mem_free); + } + if (values_percentage) + { + memory_submit ("percent_used", (gauge_t) ((float_t) mem_used) / mem_total * 100); + memory_submit ("percent_buffered", (gauge_t) ((float_t) mem_buffered) / mem_total * 100); + memory_submit ("percent_cached", (gauge_t) ((float_t) mem_cached) / mem_total * 100); + memory_submit ("percent_free", (gauge_t) ((float_t) mem_free) / mem_total * 100); + } } /* #endif KERNEL_LINUX */ @@ -389,11 +457,23 @@ static int memory_read (void) mem_kern *= pagesize; /* it's 2011 RAM is cheap */ mem_unus *= pagesize; - memory_submit ("used", mem_used); - memory_submit ("free", mem_free); - memory_submit ("locked", mem_lock); - memory_submit ("kernel", mem_kern); - memory_submit ("unusable", mem_unus); + if (values_absolute) + { + memory_submit ("used", mem_used); + memory_submit ("free", mem_free); + memory_submit ("locked", mem_lock); + memory_submit ("kernel", mem_kern); + memory_submit ("unusable", mem_unus); + } + if (values_percentage) + { + memory_submit ("percent_used", (gauge_t) ((float_t) mem_used) / (mem_used + mem_free + mem_lock + mem_kern + mem_unus) * 100); + memory_submit ("percent_free", (gauge_t) ((float_t) mem_free) / (mem_used + mem_free + mem_lock + mem_kern + mem_unus) * 100); + memory_submit ("percent_locked", (gauge_t) ((float_t) mem_lock) / (mem_used + mem_free + mem_lock + mem_kern + mem_unus) * 100); + memory_submit ("percent_kernel", (gauge_t) ((float_t) mem_kern) / (mem_used + mem_free + mem_lock + mem_kern + mem_unus) * 100); + memory_submit ("percent_unusable", (gauge_t) ((float_t) mem_unus) / (mem_used + mem_free + mem_lock + mem_kern + mem_unus) * 100); + + } /* #endif HAVE_LIBKSTAT */ #elif HAVE_SYSCTL @@ -412,9 +492,18 @@ static int memory_read (void) } assert (pagesize > 0); - memory_submit ("active", vmtotal.t_arm * pagesize); - memory_submit ("inactive", (vmtotal.t_rm - vmtotal.t_arm) * pagesize); - memory_submit ("free", vmtotal.t_free * pagesize); + if (values_absolute) + { + memory_submit ("active", vmtotal.t_arm * pagesize); + memory_submit ("inactive", (vmtotal.t_rm - vmtotal.t_arm) * pagesize); + memory_submit ("free", vmtotal.t_free * pagesize); + } + if (values_percentage) + { + memory_submit ("percent_active", (gauge_t) ((float_t) vmtotal.t_arm) / (vmtotal.t_rm + vmtotal.t_free) * 100); + memory_submit ("percent_inactive", (gauge_t) ((float_t) (vmtotal.t_rm - vmtotal.t_arm) / (vmtotal.t_rm + vmtotal.t_free) * 100); + memory_submit ("percent_free", (gauge_t) ((float_t) vmtotal.t_free) / (vmtotal.t_rm + vmtotal.t_free) * 100); + } /* #endif HAVE_SYSCTL */ #elif HAVE_LIBSTATGRAB @@ -422,9 +511,18 @@ static int memory_read (void) if ((ios = sg_get_mem_stats ()) != NULL) { - memory_submit ("used", ios->used); - memory_submit ("cached", ios->cache); - memory_submit ("free", ios->free); + if (values_absolute) + { + memory_submit ("used", ios->used); + memory_submit ("cached", ios->cache); + memory_submit ("free", ios->free); + } + if (values_percentage) + { + memory_submit ("percent_used", (gauge_t) ((float_t) ios->used) / (ios->used + ios->cache + ios->free) * 100); + memory_submit ("percent_cached", (gauge_t) ((float_t) ios->cache) / (ios->used + ios->cache + ios->free) * 100); + memory_submit ("percent_free", (gauge_t) ((float_t) ios->free) / (ios->used + ios->cache + ios->free) * 100); + } } /* #endif HAVE_LIBSTATGRAB */ @@ -436,11 +534,22 @@ static int memory_read (void) sstrerror (errno, errbuf, sizeof (errbuf))); return (-1); } - memory_submit ("used", pmemory.real_inuse * pagesize); - memory_submit ("free", pmemory.real_free * pagesize); - memory_submit ("cached", pmemory.numperm * pagesize); - memory_submit ("system", pmemory.real_system * pagesize); - memory_submit ("user", pmemory.real_process * pagesize); + if (values_absolute) + { + memory_submit ("used", pmemory.real_inuse * pagesize); + memory_submit ("free", pmemory.real_free * pagesize); + memory_submit ("cached", pmemory.numperm * pagesize); + memory_submit ("system", pmemory.real_system * pagesize); + memory_submit ("user", pmemory.real_process * pagesize); + } + if (values_percentage) + { + memory_submit ("percent_used", (gauge_t) ((float_t) pmemory.real_inuse) / pmemory.real_total * 100); + memory_submit ("percent_free", (gauge_t) ((float_t) pmemory.real_free) / pmemory.real_total * 100); + memory_submit ("percent_cached", (gauge_t) ((float_t) pmemory.numperm) / pmemory.real_total * 100); + memory_submit ("percent_system", (gauge_t) ((float_t) pmemory.real_system) / pmemory.real_total * 100); + memory_submit ("percent_user", (gauge_t) ((float_t) pmemory.real_process) / pmemory.real_total * 100); + } #endif /* HAVE_PERFSTAT */ return (0); @@ -448,6 +557,8 @@ static int memory_read (void) void module_register (void) { + plugin_register_config ("memory", memory_config, + config_keys, config_keys_num); plugin_register_init ("memory", memory_init); plugin_register_read ("memory", memory_read); } /* void module_register */