X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fswap.c;h=2025533eae298ee59048913eb4f69e2b466ad5ab;hb=853b3da5d4c6614d7db4093f57b1ca4f57b6c485;hp=22eda1f5aaf853e5cfdc911cbcc6e8af62738744;hpb=91743fc0c8785f84f3976d5f5d430b1b3a7d4918;p=collectd.git diff --git a/src/swap.c b/src/swap.c index 22eda1f5..2025533e 100644 --- a/src/swap.c +++ b/src/swap.c @@ -2,6 +2,7 @@ * collectd - src/swap.c * 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 @@ -18,6 +19,7 @@ * * Authors: * Florian octo Forster + * Manuel Sanmartin **/ #if HAVE_CONFIG_H @@ -57,6 +59,11 @@ # include #endif +#if HAVE_PERFSTAT +# include +# include +#endif + #undef MAX #define MAX(x,y) ((x) > (y) ? (x) : (y)) @@ -69,8 +76,8 @@ static derive_t pagesize; static kstat_t *ksp; /* #endif HAVE_LIBKSTAT */ -#elif HAVE_SWAPCTL -/* No global variables */ +#elif HAVE_SWAPCTL && HAVE_SWAPCTL_TWO_ARGS +static derive_t pagesize; /* #endif HAVE_SWAPCTL */ #elif defined(VM_SWAPUSAGE) @@ -86,6 +93,11 @@ int kvm_pagesize; /* 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 */ @@ -103,8 +115,9 @@ static int swap_init (void) ksp = NULL; /* #endif HAVE_LIBKSTAT */ -#elif HAVE_SWAPCTL - /* No init stuff */ +#elif HAVE_SWAPCTL && HAVE_SWAPCTL_TWO_ARGS + /* getpagesize(3C) tells me this does not fail.. */ + pagesize = (derive_t) getpagesize (); /* #endif HAVE_SWAPCTL */ #elif defined(VM_SWAPUSAGE) @@ -134,7 +147,11 @@ static int swap_init (void) #elif HAVE_LIBSTATGRAB /* No init stuff */ -#endif /* HAVE_LIBSTATGRAB */ +/* #endif HAVE_LIBSTATGRAB */ + +#elif HAVE_PERFSTAT + pagesize = getpagesize(); +#endif /* HAVE_PERFSTAT */ return (0); } @@ -173,10 +190,12 @@ static int swap_read (void) #if KERNEL_LINUX FILE *fh; char buffer[1024]; - + char *fields[8]; int numfields; + _Bool old_kernel=0; + derive_t swap_used = 0; derive_t swap_cached = 0; derive_t swap_free = 0; @@ -192,25 +211,18 @@ static int swap_read (void) return (-1); } - while (fgets (buffer, 1024, fh) != NULL) + while (fgets (buffer, sizeof (buffer), fh) != NULL) { - derive_t *val = NULL; - - if (strncasecmp (buffer, "SwapTotal:", 10) == 0) - val = &swap_total; - else if (strncasecmp (buffer, "SwapFree:", 9) == 0) - val = &swap_free; - else if (strncasecmp (buffer, "SwapCached:", 11) == 0) - val = &swap_cached; - else - continue; - - numfields = strsplit (buffer, fields, 8); - + numfields = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields)); if (numfields < 2) continue; - *val = (derive_t) atoll (fields[1]) * 1024LL; + if (strcasecmp (fields[0], "SwapTotal:") == 0) + strtoderive (fields[1], &swap_total); + else if (strcasecmp (fields[0], "SwapFree:") == 0) + strtoderive (fields[1], &swap_free); + else if (strcasecmp (fields[0], "SwapCached:") == 0) + strtoderive (fields[1], &swap_cached); } if (fclose (fh)) @@ -227,30 +239,44 @@ static int swap_read (void) if ((fh = fopen ("/proc/vmstat", "r")) == NULL) { - char errbuf[1024]; - WARNING ("swap: fopen: %s", - sstrerror (errno, errbuf, sizeof (errbuf))); - return (-1); + // /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) + while (fgets (buffer, sizeof (buffer), fh) != NULL) { - derive_t *val = NULL; - - if (strncasecmp (buffer, "pswpin", 6) == 0) - val = &swap_in; - else if (strncasecmp (buffer, "pswpout", 7) == 0) - val = &swap_out; - else - continue; - - numfields = strsplit (buffer, fields, 8); - - if (numfields < 2) - continue; - - *val = (derive_t) atoll (fields[1]); - } + 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)) { @@ -259,12 +285,11 @@ static int swap_read (void) 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 ("used", 1024 * swap_used, DS_TYPE_GAUGE); + swap_submit ("free", 1024 * swap_free, DS_TYPE_GAUGE); + swap_submit ("cached", 1024 * 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 @@ -294,7 +319,7 @@ static int 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 @@ -314,6 +339,74 @@ static int swap_read (void) /* #endif HAVE_LIBKSTAT */ #elif HAVE_SWAPCTL + #if HAVE_SWAPCTL_TWO_ARGS + swaptbl_t *s; + char strtab[255]; + int swap_num; + int status; + int i; + + derive_t avail = 0; + derive_t total = 0; + + swap_num = swapctl (SC_GETNSWP, NULL); + if (swap_num < 0) + { + ERROR ("swap plugin: swapctl (SC_GETNSWP) failed with status %i.", + swap_num); + return (-1); + } + else if (swap_num == 0) + return (0); + + s = (swaptbl_t *) smalloc (swap_num * sizeof (swapent_t) + sizeof (struct swaptable)); + if (s == NULL) + { + ERROR ("swap plugin: smalloc failed."); + return (-1); + } + /* Initialize string pointers. We have them share the same buffer as we don't care + * about the device's name, only its size. This saves memory and alloc/free ops */ + for (i = 0; i < (swap_num + 1); i++) { + s->swt_ent[i].ste_path = strtab; + } + s->swt_n = swap_num + 1; + status = swapctl (SC_LIST, s); + if (status != swap_num) + { + ERROR ("swap plugin: swapctl (SC_LIST) failed with status %i.", + status); + sfree (s); + return (-1); + } + + for (i = 0; i < swap_num; i++) + { + if ((s->swt_ent[i].ste_flags & ST_INDEL) != 0) + continue; + + avail += ((derive_t) s->swt_ent[i].ste_free) + * pagesize; + total += ((derive_t) s->swt_ent[i].ste_pages) + * pagesize; + } + + if (total < avail) + { + ERROR ("swap plugin: Total swap space (%"PRIi64") " + "is less than free swap space (%"PRIi64").", + total, avail); + sfree (s); + return (-1); + } + + swap_submit ("used", total - avail, DS_TYPE_GAUGE); + swap_submit ("free", avail, DS_TYPE_GAUGE); + + sfree (s); + /* #endif HAVE_SWAPCTL_TWO_ARGS */ + #elif HAVE_SWAPCTL_THREE_ARGS + struct swapent *swap_entries; int swap_num; int status; @@ -322,18 +415,6 @@ static int swap_read (void) 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) { @@ -389,6 +470,7 @@ static int swap_read (void) swap_submit ("free", total - used, DS_TYPE_GAUGE); sfree (swap_entries); + #endif /* HAVE_SWAPCTL_THREE_ARGS */ /* #endif HAVE_SWAPCTL */ #elif defined(VM_SWAPUSAGE) @@ -449,7 +531,19 @@ static int swap_read (void) swap_submit ("used", (derive_t) swap->used, DS_TYPE_GAUGE); swap_submit ("free", (derive_t) swap->free, DS_TYPE_GAUGE); -#endif /* HAVE_LIBSTATGRAB */ +/* #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 */