X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=Documentation%2Fvm%2Fslabinfo.c;h=d3ce295bffac59ce6ca9a4be032194210e5ac41f;hb=205ab99dd103e3dd5b0964dad8a16dfe2db69b2e;hp=1af7bd5a2183ec83d1b4481191b61973006f2a46;hpb=b981d8b3f5e008ff10d993be633ad00564fc22cd;p=linux-2.6-omap-h63xx.git diff --git a/Documentation/vm/slabinfo.c b/Documentation/vm/slabinfo.c index 1af7bd5a218..d3ce295bffa 100644 --- a/Documentation/vm/slabinfo.c +++ b/Documentation/vm/slabinfo.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -30,7 +31,14 @@ struct slabinfo { int hwcache_align, object_size, objs_per_slab; int sanity_checks, slab_size, store_user, trace; int order, poison, reclaim_account, red_zone; - unsigned long partial, objects, slabs; + unsigned long partial, objects, slabs, objects_partial, objects_total; + unsigned long alloc_fastpath, alloc_slowpath; + unsigned long free_fastpath, free_slowpath; + unsigned long free_frozen, free_add_partial, free_remove_partial; + unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill; + unsigned long cpuslab_flush, deactivate_full, deactivate_empty; + unsigned long deactivate_to_head, deactivate_to_tail; + unsigned long deactivate_remote_frees; int numa[MAX_NODES]; int numa_partial[MAX_NODES]; } slabinfo[MAX_SLABS]; @@ -63,8 +71,10 @@ int show_inverted = 0; int show_single_ref = 0; int show_totals = 0; int sort_size = 0; +int sort_active = 0; int set_debug = 0; int show_ops = 0; +int show_activity = 0; /* Debug options */ int sanity = 0; @@ -84,7 +94,7 @@ void fatal(const char *x, ...) va_start(ap, x); vfprintf(stderr, x, ap); va_end(ap); - exit(1); + exit(EXIT_FAILURE); } void usage(void) @@ -92,8 +102,10 @@ void usage(void) printf("slabinfo 5/7/2007. (c) 2007 sgi. clameter@sgi.com\n\n" "slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n" "-a|--aliases Show aliases\n" + "-A|--activity Most active slabs first\n" "-d|--debug= Set/Clear Debug options\n" - "-e|--empty Show empty slabs\n" + "-D|--display-active Switch line format to activity\n" + "-e|--empty Show empty slabs\n" "-f|--first-alias Show first alias\n" "-h|--help Show usage information\n" "-i|--inverted Inverted list\n" @@ -119,14 +131,14 @@ void usage(void) ); } -unsigned long read_obj(char *name) +unsigned long read_obj(const char *name) { FILE *f = fopen(name, "r"); if (!f) buffer[0] = 0; else { - if (!fgets(buffer,sizeof(buffer), f)) + if (!fgets(buffer, sizeof(buffer), f)) buffer[0] = 0; fclose(f); if (buffer[strlen(buffer)] == '\n') @@ -139,7 +151,7 @@ unsigned long read_obj(char *name) /* * Get the contents of an attribute */ -unsigned long get_obj(char *name) +unsigned long get_obj(const char *name) { if (!read_obj(name)) return 0; @@ -147,7 +159,7 @@ unsigned long get_obj(char *name) return atol(buffer); } -unsigned long get_obj_and_str(char *name, char **x) +unsigned long get_obj_and_str(const char *name, char **x) { unsigned long result = 0; char *p; @@ -166,12 +178,12 @@ unsigned long get_obj_and_str(char *name, char **x) return result; } -void set_obj(struct slabinfo *s, char *name, int n) +void set_obj(struct slabinfo *s, const char *name, int n) { char x[100]; FILE *f; - sprintf(x, "%s/%s", s->name, name); + snprintf(x, 100, "%s/%s", s->name, name); f = fopen(x, "w"); if (!f) fatal("Cannot write to %s\n", x); @@ -180,13 +192,13 @@ void set_obj(struct slabinfo *s, char *name, int n) fclose(f); } -unsigned long read_slab_obj(struct slabinfo *s, char *name) +unsigned long read_slab_obj(struct slabinfo *s, const char *name) { char x[100]; FILE *f; - int l; + size_t l; - sprintf(x, "%s/%s", s->name, name); + snprintf(x, 100, "%s/%s", s->name, name); f = fopen(x, "r"); if (!f) { buffer[0] = 0; @@ -280,8 +292,11 @@ int line = 0; void first_line(void) { - printf("Name Objects Objsize Space " - "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n"); + if (show_activity) + printf("Name Objects Alloc Free %%Fast\n"); + else + printf("Name Objects Objsize Space " + "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n"); } /* @@ -308,6 +323,12 @@ unsigned long slab_size(struct slabinfo *s) return s->slabs * (page_size << s->order); } +unsigned long slab_activity(struct slabinfo *s) +{ + return s->alloc_fastpath + s->free_fastpath + + s->alloc_slowpath + s->free_slowpath; +} + void slab_numa(struct slabinfo *s, int mode) { int node; @@ -391,6 +412,71 @@ const char *onoff(int x) return "Off"; } +void slab_stats(struct slabinfo *s) +{ + unsigned long total_alloc; + unsigned long total_free; + unsigned long total; + + if (!s->alloc_slab) + return; + + total_alloc = s->alloc_fastpath + s->alloc_slowpath; + total_free = s->free_fastpath + s->free_slowpath; + + if (!total_alloc) + return; + + printf("\n"); + printf("Slab Perf Counter Alloc Free %%Al %%Fr\n"); + printf("--------------------------------------------------\n"); + printf("Fastpath %8lu %8lu %3lu %3lu\n", + s->alloc_fastpath, s->free_fastpath, + s->alloc_fastpath * 100 / total_alloc, + s->free_fastpath * 100 / total_free); + printf("Slowpath %8lu %8lu %3lu %3lu\n", + total_alloc - s->alloc_fastpath, s->free_slowpath, + (total_alloc - s->alloc_fastpath) * 100 / total_alloc, + s->free_slowpath * 100 / total_free); + printf("Page Alloc %8lu %8lu %3lu %3lu\n", + s->alloc_slab, s->free_slab, + s->alloc_slab * 100 / total_alloc, + s->free_slab * 100 / total_free); + printf("Add partial %8lu %8lu %3lu %3lu\n", + s->deactivate_to_head + s->deactivate_to_tail, + s->free_add_partial, + (s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc, + s->free_add_partial * 100 / total_free); + printf("Remove partial %8lu %8lu %3lu %3lu\n", + s->alloc_from_partial, s->free_remove_partial, + s->alloc_from_partial * 100 / total_alloc, + s->free_remove_partial * 100 / total_free); + + printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n", + s->deactivate_remote_frees, s->free_frozen, + s->deactivate_remote_frees * 100 / total_alloc, + s->free_frozen * 100 / total_free); + + printf("Total %8lu %8lu\n\n", total_alloc, total_free); + + if (s->cpuslab_flush) + printf("Flushes %8lu\n", s->cpuslab_flush); + + if (s->alloc_refill) + printf("Refill %8lu\n", s->alloc_refill); + + total = s->deactivate_full + s->deactivate_empty + + s->deactivate_to_head + s->deactivate_to_tail; + + if (total) + printf("Deactivate Full=%lu(%lu%%) Empty=%lu(%lu%%) " + "ToHead=%lu(%lu%%) ToTail=%lu(%lu%%)\n", + s->deactivate_full, (s->deactivate_full * 100) / total, + s->deactivate_empty, (s->deactivate_empty * 100) / total, + s->deactivate_to_head, (s->deactivate_to_head * 100) / total, + s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total); +} + void report(struct slabinfo *s) { if (strcmp(s->name, "*") == 0) @@ -429,6 +515,7 @@ void report(struct slabinfo *s) ops(s); show_tracking(s); slab_numa(s, 1); + slab_stats(s); } void slabcache(struct slabinfo *s) @@ -453,7 +540,8 @@ void slabcache(struct slabinfo *s) return; store_size(size_str, slab_size(s)); - sprintf(dist_str,"%lu/%lu/%d", s->slabs, s->partial, s->cpu_slabs); + snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs, + s->partial, s->cpu_slabs); if (!line++) first_line(); @@ -478,13 +566,27 @@ void slabcache(struct slabinfo *s) *p++ = 'T'; *p = 0; - printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n", - s->name, s->objects, s->object_size, size_str, dist_str, - s->objs_per_slab, s->order, - s->slabs ? (s->partial * 100) / s->slabs : 100, - s->slabs ? (s->objects * s->object_size * 100) / - (s->slabs * (page_size << s->order)) : 100, - flags); + if (show_activity) { + unsigned long total_alloc; + unsigned long total_free; + + total_alloc = s->alloc_fastpath + s->alloc_slowpath; + total_free = s->free_fastpath + s->free_slowpath; + + printf("%-21s %8ld %8ld %8ld %3ld %3ld \n", + s->name, s->objects, + total_alloc, total_free, + total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0, + total_free ? (s->free_fastpath * 100 / total_free) : 0); + } + else + printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n", + s->name, s->objects, s->object_size, size_str, dist_str, + s->objs_per_slab, s->order, + s->slabs ? (s->partial * 100) / s->slabs : 100, + s->slabs ? (s->objects * s->object_size * 100) / + (s->slabs * (page_size << s->order)) : 100, + flags); } /* @@ -675,7 +777,6 @@ void totals(void) unsigned long used; unsigned long long wasted; unsigned long long objwaste; - long long objects_in_partial_slabs; unsigned long percentage_partial_slabs; unsigned long percentage_partial_objs; @@ -689,18 +790,11 @@ void totals(void) wasted = size - used; objwaste = s->slab_size - s->object_size; - objects_in_partial_slabs = s->objects - - (s->slabs - s->partial - s ->cpu_slabs) * - s->objs_per_slab; - - if (objects_in_partial_slabs < 0) - objects_in_partial_slabs = 0; - percentage_partial_slabs = s->partial * 100 / s->slabs; if (percentage_partial_slabs > 100) percentage_partial_slabs = 100; - percentage_partial_objs = objects_in_partial_slabs * 100 + percentage_partial_objs = s->objects_partial * 100 / s->objects; if (percentage_partial_objs > 100) @@ -722,8 +816,8 @@ void totals(void) min_objects = s->objects; if (used < min_used) min_used = used; - if (objects_in_partial_slabs < min_partobj) - min_partobj = objects_in_partial_slabs; + if (s->objects_partial < min_partobj) + min_partobj = s->objects_partial; if (percentage_partial_slabs < min_ppart) min_ppart = percentage_partial_slabs; if (percentage_partial_objs < min_ppartobj) @@ -747,8 +841,8 @@ void totals(void) max_objects = s->objects; if (used > max_used) max_used = used; - if (objects_in_partial_slabs > max_partobj) - max_partobj = objects_in_partial_slabs; + if (s->objects_partial > max_partobj) + max_partobj = s->objects_partial; if (percentage_partial_slabs > max_ppart) max_ppart = percentage_partial_slabs; if (percentage_partial_objs > max_ppartobj) @@ -763,7 +857,7 @@ void totals(void) total_objects += s->objects; total_used += used; - total_partobj += objects_in_partial_slabs; + total_partobj += s->objects_partial; total_ppart += percentage_partial_slabs; total_ppartobj += percentage_partial_objs; @@ -891,6 +985,8 @@ void sort_slabs(void) if (sort_size) result = slab_size(s1) < slab_size(s2); + else if (sort_active) + result = slab_activity(s1) < slab_activity(s2); else result = strcasecmp(s1->name, s2->name); @@ -1020,7 +1116,7 @@ void read_slab_dir(void) char *t; int count; - if (chdir("/sys/slab")) + if (chdir("/sys/kernel/slab") && chdir("/sys/slab")) fatal("SYSFS support for SLUB not active\n"); dir = opendir("."); @@ -1057,11 +1153,14 @@ void read_slab_dir(void) slab->hwcache_align = get_obj("hwcache_align"); slab->object_size = get_obj("object_size"); slab->objects = get_obj("objects"); + slab->objects_partial = get_obj("objects_partial"); + slab->objects_total = get_obj("objects_total"); slab->objs_per_slab = get_obj("objs_per_slab"); slab->order = get_obj("order"); slab->partial = get_obj("partial"); slab->partial = get_obj_and_str("partial", &t); decode_numa_list(slab->numa_partial, t); + free(t); slab->poison = get_obj("poison"); slab->reclaim_account = get_obj("reclaim_account"); slab->red_zone = get_obj("red_zone"); @@ -1069,8 +1168,26 @@ void read_slab_dir(void) slab->slab_size = get_obj("slab_size"); slab->slabs = get_obj_and_str("slabs", &t); decode_numa_list(slab->numa, t); + free(t); slab->store_user = get_obj("store_user"); slab->trace = get_obj("trace"); + slab->alloc_fastpath = get_obj("alloc_fastpath"); + slab->alloc_slowpath = get_obj("alloc_slowpath"); + slab->free_fastpath = get_obj("free_fastpath"); + slab->free_slowpath = get_obj("free_slowpath"); + slab->free_frozen= get_obj("free_frozen"); + slab->free_add_partial = get_obj("free_add_partial"); + slab->free_remove_partial = get_obj("free_remove_partial"); + slab->alloc_from_partial = get_obj("alloc_from_partial"); + slab->alloc_slab = get_obj("alloc_slab"); + slab->alloc_refill = get_obj("alloc_refill"); + slab->free_slab = get_obj("free_slab"); + slab->cpuslab_flush = get_obj("cpuslab_flush"); + slab->deactivate_full = get_obj("deactivate_full"); + slab->deactivate_empty = get_obj("deactivate_empty"); + slab->deactivate_to_head = get_obj("deactivate_to_head"); + slab->deactivate_to_tail = get_obj("deactivate_to_tail"); + slab->deactivate_remote_frees = get_obj("deactivate_remote_frees"); chdir(".."); if (slab->name[0] == ':') alias_targets++; @@ -1121,7 +1238,9 @@ void output_slabs(void) struct option opts[] = { { "aliases", 0, NULL, 'a' }, + { "activity", 0, NULL, 'A' }, { "debug", 2, NULL, 'd' }, + { "display-activity", 0, NULL, 'D' }, { "empty", 0, NULL, 'e' }, { "first-alias", 0, NULL, 'f' }, { "help", 0, NULL, 'h' }, @@ -1146,20 +1265,26 @@ int main(int argc, char *argv[]) page_size = getpagesize(); - while ((c = getopt_long(argc, argv, "ad::efhil1noprstvzTS", + while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTS", opts, NULL)) != -1) - switch(c) { + switch (c) { case '1': show_single_ref = 1; break; case 'a': show_alias = 1; break; + case 'A': + sort_active = 1; + break; case 'd': set_debug = 1; if (!debug_opt_scan(optarg)) fatal("Invalid debug option '%s'\n", optarg); break; + case 'D': + show_activity = 1; + break; case 'e': show_empty = 1; break;