X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fswap.c;h=e467818db4ca01f65af8fd66eb0c7780d571fec3;hb=921d4724aaf1e59b9bf5b1839bd12a18d88d198b;hp=f906c99dd1413e64819075a0edf2aff2e4a85b51;hpb=56f1b53ff9d854740201b1070d3cd2637be56b6e;p=collectd.git diff --git a/src/swap.c b/src/swap.c index f906c99d..e467818d 100644 --- a/src/swap.c +++ b/src/swap.c @@ -1,11 +1,12 @@ /** * collectd - src/swap.c - * Copyright (C) 2005,2006 Florian octo Forster + * Copyright (C) 2005-2009 Florian octo Forster + * Copyright (C) 2009 Stefan Völkel + * Copyright (C) 2009 Manuel Sanmartin * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. + * Free Software Foundation; only version 2 of the License is applicable. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of @@ -18,8 +19,19 @@ * * Authors: * Florian octo Forster + * Manuel Sanmartin **/ +#if HAVE_CONFIG_H +# include "config.h" +# undef HAVE_CONFIG_H +#endif +/* avoid swap.h error "Cannot use swapctl in the large files compilation environment" */ +#if HAVE_SYS_SWAP_H && !defined(_LP64) && _FILE_OFFSET_BITS == 64 +# undef _FILE_OFFSET_BITS +# undef _LARGEFILE64_SOURCE +#endif + #include "collectd.h" #include "common.h" #include "plugin.h" @@ -27,63 +39,70 @@ #if HAVE_SYS_SWAP_H # include #endif +#if HAVE_VM_ANON_H +# include +#endif #if HAVE_SYS_PARAM_H # include #endif #if HAVE_SYS_SYSCTL_H # include #endif +#if HAVE_SYS_DKSTAT_H +# include +#endif #if HAVE_KVM_H # include #endif -#define MODULE_NAME "swap" +#if HAVE_STATGRAB_H +# include +#endif -#if KERNEL_LINUX || HAVE_LIBKSTAT || defined(VM_SWAPUSAGE) || HAVE_LIBKVM || HAVE_LIBSTATGRAB -# define SWAP_HAVE_READ 1 -#else -# define SWAP_HAVE_READ 0 +#if HAVE_PERFSTAT +# include +# include #endif #undef MAX #define MAX(x,y) ((x) > (y) ? (x) : (y)) -static char *swap_file = "swap.rrd"; - -/* 1099511627776 == 1TB ought to be enough for anyone ;) */ -static char *ds_def[] = -{ - "DS:used:GAUGE:"COLLECTD_HEARTBEAT":0:1099511627776", - "DS:free:GAUGE:"COLLECTD_HEARTBEAT":0:1099511627776", - "DS:cached:GAUGE:"COLLECTD_HEARTBEAT":0:1099511627776", - "DS:resv:GAUGE:"COLLECTD_HEARTBEAT":0:1099511627776", - NULL -}; -static int ds_num = 4; - #if KERNEL_LINUX /* No global variables */ /* #endif KERNEL_LINUX */ #elif HAVE_LIBKSTAT -static unsigned long long pagesize; +static derive_t pagesize; static kstat_t *ksp; /* #endif HAVE_LIBKSTAT */ +#elif HAVE_SWAPCTL +/* No global variables */ +/* #endif HAVE_SWAPCTL */ + #elif defined(VM_SWAPUSAGE) /* No global variables */ /* #endif defined(VM_SWAPUSAGE) */ -#elif HAVE_LIBKVM +#elif HAVE_LIBKVM_GETSWAPINFO static kvm_t *kvm_obj = NULL; int kvm_pagesize; -/* #endif HAVE_LIBKVM */ +/* #endif HAVE_LIBKVM_GETSWAPINFO */ #elif HAVE_LIBSTATGRAB /* No global variables */ +/* #endif HAVE_LIBSTATGRAB */ + +#elif HAVE_PERFSTAT +static int pagesize; +static perfstat_memory_total_t pmemory; +/*# endif HAVE_PERFSTAT */ + +#else +# error "No applicable input method." #endif /* HAVE_LIBSTATGRAB */ -static void swap_init (void) +static int swap_init (void) { #if KERNEL_LINUX /* No init stuff */ @@ -91,16 +110,20 @@ static void swap_init (void) #elif HAVE_LIBKSTAT /* getpagesize(3C) tells me this does not fail.. */ - pagesize = (unsigned long long) getpagesize (); + pagesize = (derive_t) getpagesize (); if (get_kstat (&ksp, "unix", 0, "system_pages")) ksp = NULL; /* #endif HAVE_LIBKSTAT */ +#elif HAVE_SWAPCTL + /* No init stuff */ +/* #endif HAVE_SWAPCTL */ + #elif defined(VM_SWAPUSAGE) /* No init stuff */ /* #endif defined(VM_SWAPUSAGE) */ -#elif HAVE_LIBKVM +#elif HAVE_LIBKVM_GETSWAPINFO if (kvm_obj != NULL) { kvm_close (kvm_obj); @@ -116,61 +139,80 @@ static void swap_init (void) NULL)) /* errstr */ == NULL) { - syslog (LOG_ERR, "swap plugin: kvm_open failed."); - return; + ERROR ("swap plugin: kvm_open failed."); + return (-1); } -/* #endif HAVE_LIBKVM */ +/* #endif HAVE_LIBKVM_GETSWAPINFO */ #elif HAVE_LIBSTATGRAB /* No init stuff */ -#endif /* HAVE_LIBSTATGRAB */ +/* #endif HAVE_LIBSTATGRAB */ - return; -} +#elif HAVE_PERFSTAT + pagesize = getpagesize(); +#endif /* HAVE_PERFSTAT */ -static void swap_write (char *host, char *inst, char *val) -{ - rrd_update_file (host, swap_file, val, ds_def, ds_num); + return (0); } -#if SWAP_HAVE_READ -static void swap_submit (unsigned long long swap_used, - unsigned long long swap_free, - unsigned long long swap_cached, - unsigned long long swap_resv) +static void swap_submit (const char *type_instance, derive_t value, unsigned type) { - char buffer[512]; + value_t values[1]; + value_list_t vl = VALUE_LIST_INIT; - if (snprintf (buffer, 512, "%u:%llu:%llu:%llu:%llu", (unsigned int) curtime, - swap_used, swap_free, swap_cached, swap_resv) >= 512) - return; + switch (type) + { + case DS_TYPE_GAUGE: + values[0].gauge = (gauge_t) value; + sstrncpy (vl.type, "swap", sizeof (vl.type)); + break; + case DS_TYPE_DERIVE: + values[0].derive = value; + sstrncpy (vl.type, "swap_io", sizeof (vl.type)); + break; + default: + ERROR ("swap plugin: swap_submit called with wrong" + " type"); + } - plugin_submit (MODULE_NAME, "-", buffer); -} + vl.values = values; + vl.values_len = 1; + sstrncpy (vl.host, hostname_g, sizeof (vl.host)); + sstrncpy (vl.plugin, "swap", sizeof (vl.plugin)); + sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance)); -static void swap_read (void) + plugin_dispatch_values (&vl); +} /* void swap_submit */ + +static int swap_read (void) { #if KERNEL_LINUX FILE *fh; char buffer[1024]; - + char *fields[8]; int numfields; - unsigned long long swap_used = 0LL; - unsigned long long swap_cached = 0LL; - unsigned long long swap_free = 0LL; - unsigned long long swap_total = 0LL; + _Bool old_kernel=0; + + derive_t swap_used = 0; + derive_t swap_cached = 0; + derive_t swap_free = 0; + derive_t swap_total = 0; + derive_t swap_in = 0; + derive_t swap_out = 0; if ((fh = fopen ("/proc/meminfo", "r")) == NULL) { - syslog (LOG_WARNING, "memory: fopen: %s", strerror (errno)); - return; + char errbuf[1024]; + WARNING ("memory: fopen: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + return (-1); } while (fgets (buffer, 1024, fh) != NULL) { - unsigned long long *val = NULL; + derive_t *val = NULL; if (strncasecmp (buffer, "SwapTotal:", 10) == 0) val = &swap_total; @@ -186,32 +228,89 @@ static void swap_read (void) if (numfields < 2) continue; - *val = atoll (fields[1]) * 1024LL; + *val = (derive_t) atoll (fields[1]) * 1024LL; } if (fclose (fh)) - syslog (LOG_WARNING, "memory: fclose: %s", strerror (errno)); + { + char errbuf[1024]; + WARNING ("memory: fclose: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + } if ((swap_total == 0LL) || ((swap_free + swap_cached) > swap_total)) - return; + return (-1); swap_used = swap_total - (swap_free + swap_cached); - swap_submit (swap_used, swap_free, swap_cached, -1LL); + if ((fh = fopen ("/proc/vmstat", "r")) == NULL) + { + // /proc/vmstat does not exist in kernels <2.6 + if ((fh = fopen ("/proc/stat", "r")) == NULL ) + { + char errbuf[1024]; + WARNING ("swap: fopen: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + return (-1); + } + else + old_kernel = 1; + } + + while (fgets (buffer, 1024, fh) != NULL) + { + numfields = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields)); + + if (!old_kernel) + { + if (numfields != 2) + continue; + + if (strcasecmp ("pswpin", fields[0]) != 0) + strtoderive (fields[1], &swap_in); + else if (strcasecmp ("pswpout", fields[0]) == 0) + strtoderive (fields[1], &swap_out); + } + else /* if (old_kernel) */ + { + if (numfields != 3) + continue; + + if (strcasecmp ("page", fields[0]) == 0) + { + strtoderive (fields[1], &swap_in); + strtoderive (fields[2], &swap_out); + } + } + } /* while (fgets) */ + + if (fclose (fh)) + { + char errbuf[1024]; + WARNING ("swap: fclose: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + } + + swap_submit ("used", swap_used, DS_TYPE_GAUGE); + swap_submit ("free", swap_free, DS_TYPE_GAUGE); + swap_submit ("cached", swap_cached, DS_TYPE_GAUGE); + swap_submit ("in", swap_in, DS_TYPE_DERIVE); + swap_submit ("out", swap_out, DS_TYPE_DERIVE); /* #endif KERNEL_LINUX */ #elif HAVE_LIBKSTAT - unsigned long long swap_alloc; - unsigned long long swap_resv; - unsigned long long swap_avail; + derive_t swap_alloc; + derive_t swap_resv; + derive_t swap_avail; struct anoninfo ai; if (swapctl (SC_AINFO, &ai) == -1) { - syslog (LOG_ERR, "swap plugin: swapctl failed: %s", - strerror (errno)); - return; + char errbuf[1024]; + ERROR ("swap plugin: swapctl failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + return (-1); } /* @@ -226,7 +325,7 @@ static void swap_read (void) * However, Solaris does not allow to allocated/reserved more than the * available swap (physical memory + disk swap), so the pedant may * prefer: allocated + unallocated = reserved, available - * + * * We map the above to: used + resv = n/a, free * * Does your brain hurt yet? - Christophe Kalt @@ -235,22 +334,99 @@ static void swap_read (void) * swap_alloc = pagesize * ( ai.ani_max - ai.ani_free ); * can suffer from a 32bit overflow. */ - swap_alloc = ai.ani_max - ai.ani_free; - swap_alloc *= pagesize; - swap_resv = ai.ani_resv + ai.ani_free - ai.ani_max; - swap_resv *= pagesize; - swap_avail = ai.ani_max - ai.ani_resv; - swap_avail *= pagesize; - - swap_submit (swap_alloc, swap_avail, -1LL, swap_resv - swap_alloc); + swap_alloc = (derive_t) ((ai.ani_max - ai.ani_free) * pagesize); + swap_resv = (derive_t) ((ai.ani_resv + ai.ani_free - ai.ani_max) + * pagesize); + swap_avail = (derive_t) ((ai.ani_max - ai.ani_resv) * pagesize); + + swap_submit ("used", swap_alloc, DS_TYPE_GAUGE); + swap_submit ("free", swap_avail, DS_TYPE_GAUGE); + swap_submit ("reserved", swap_resv, DS_TYPE_GAUGE); /* #endif HAVE_LIBKSTAT */ +#elif HAVE_SWAPCTL + struct swapent *swap_entries; + int swap_num; + int status; + int i; + + derive_t used = 0; + derive_t total = 0; + + /* + * XXX: This is the syntax for the *BSD `swapctl', which has the + * following prototype: + * swapctl (int cmd, void *arg, int misc); + * + * HP-UX and Solaris (and possibly other UNIXes) provide `swapctl', + * too, but with the following prototype: + * swapctl (int cmd, void *arg); + * + * Solaris is usually handled in the KSTAT case above. For other UNIXes + * a separate case for the other version of `swapctl' may be necessary. + */ + swap_num = swapctl (SWAP_NSWAP, NULL, 0); + if (swap_num < 0) + { + ERROR ("swap plugin: swapctl (SWAP_NSWAP) failed with status %i.", + swap_num); + return (-1); + } + else if (swap_num == 0) + return (0); + + swap_entries = calloc (swap_num, sizeof (*swap_entries)); + if (swap_entries == NULL) + { + ERROR ("swap plugin: calloc failed."); + return (-1); + } + + status = swapctl (SWAP_STATS, swap_entries, swap_num); + if (status != swap_num) + { + ERROR ("swap plugin: swapctl (SWAP_STATS) failed with status %i.", + status); + sfree (swap_entries); + return (-1); + } + +#if defined(DEV_BSIZE) && (DEV_BSIZE > 0) +# define C_SWAP_BLOCK_SIZE ((derive_t) DEV_BSIZE) +#else +# define C_SWAP_BLOCK_SIZE ((derive_t) 512) +#endif + + for (i = 0; i < swap_num; i++) + { + if ((swap_entries[i].se_flags & SWF_ENABLE) == 0) + continue; + + used += ((derive_t) swap_entries[i].se_inuse) + * C_SWAP_BLOCK_SIZE; + total += ((derive_t) swap_entries[i].se_nblks) + * C_SWAP_BLOCK_SIZE; + } + + if (total < used) + { + ERROR ("swap plugin: Total swap space (%"PRIu64") " + "is less than used swap space (%"PRIu64").", + total, used); + return (-1); + } + + swap_submit ("used", used, DS_TYPE_GAUGE); + swap_submit ("free", total - used, DS_TYPE_GAUGE); + + sfree (swap_entries); +/* #endif HAVE_SWAPCTL */ + #elif defined(VM_SWAPUSAGE) int mib[3]; size_t mib_len; struct xsw_usage sw_usage; size_t sw_usage_len; - int status; mib_len = 2; mib[0] = CTL_VM; @@ -259,53 +435,70 @@ static void swap_read (void) sw_usage_len = sizeof (struct xsw_usage); if (sysctl (mib, mib_len, &sw_usage, &sw_usage_len, NULL, 0) != 0) - return; + return (-1); /* The returned values are bytes. */ - swap_submit (sw_usage.xsu_used, sw_usage.xsu_avail, -1LL, -1LL); + swap_submit ("used", (derive_t) sw_usage.xsu_used, DS_TYPE_GAUGE); + swap_submit ("free", (derive_t) sw_usage.xsu_avail, DS_TYPE_GAUGE); /* #endif VM_SWAPUSAGE */ -#elif HAVE_LIBKVM +#elif HAVE_LIBKVM_GETSWAPINFO struct kvm_swap data_s; int status; - unsigned long long used; - unsigned long long free; - unsigned long long total; + derive_t used; + derive_t free; + derive_t total; if (kvm_obj == NULL) - return; + return (-1); /* only one structure => only get the grand total, no details */ status = kvm_getswapinfo (kvm_obj, &data_s, 1, 0); if (status == -1) - return; + return (-1); - total = (unsigned long long) data_s.ksw_total; - used = (unsigned long long) data_s.ksw_used; + total = (derive_t) data_s.ksw_total; + used = (derive_t) data_s.ksw_used; - total *= (unsigned long long) kvm_pagesize; - used *= (unsigned long long) kvm_pagesize; + total *= (derive_t) kvm_pagesize; + used *= (derive_t) kvm_pagesize; free = total - used; - swap_submit (used, free, -1LL, -1LL); -/* #endif HAVE_LIBKVM */ + swap_submit ("used", used, DS_TYPE_GAUGE); + swap_submit ("free", free, DS_TYPE_GAUGE); +/* #endif HAVE_LIBKVM_GETSWAPINFO */ #elif HAVE_LIBSTATGRAB sg_swap_stats *swap; - if ((swap = sg_get_swap_stats ()) != NULL) - swap_submit (swap->used, swap->free, -1LL, -1LL); -#endif /* HAVE_LIBSTATGRAB */ -} -#else -# define swap_read NULL -#endif /* SWAP_HAVE_READ */ + swap = sg_get_swap_stats (); + + if (swap == NULL) + return (-1); + + swap_submit ("used", (derive_t) swap->used, DS_TYPE_GAUGE); + swap_submit ("free", (derive_t) swap->free, DS_TYPE_GAUGE); +/* #endif HAVE_LIBSTATGRAB */ + +#elif HAVE_PERFSTAT + if(perfstat_memory_total(NULL, &pmemory, sizeof(perfstat_memory_total_t), 1) < 0) + { + char errbuf[1024]; + WARNING ("memory plugin: perfstat_memory_total failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + return (-1); + } + swap_submit ("used", (derive_t) (pmemory.pgsp_total - pmemory.pgsp_free) * pagesize, DS_TYPE_GAUGE); + swap_submit ("free", (derive_t) pmemory.pgsp_free * pagesize , DS_TYPE_GAUGE); +#endif /* HAVE_PERFSTAT */ + + return (0); +} /* int swap_read */ void module_register (void) { - plugin_register (MODULE_NAME, swap_init, swap_read, swap_write); -} - -#undef MODULE_NAME + plugin_register_init ("swap", swap_init); + plugin_register_read ("swap", swap_read); +} /* void module_register */