stats.c 10.1 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/* FS-Cache statistics
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * 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.
 */

#define FSCACHE_DEBUG_LEVEL THREAD
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include "internal.h"

/*
 * operation counters
 */
atomic_t fscache_n_op_pend;
atomic_t fscache_n_op_run;
atomic_t fscache_n_op_enqueue;
atomic_t fscache_n_op_deferred_release;
25
atomic_t fscache_n_op_initialised;
26 27
atomic_t fscache_n_op_release;
atomic_t fscache_n_op_gc;
28
atomic_t fscache_n_op_cancelled;
29
atomic_t fscache_n_op_rejected;
30 31 32 33 34 35 36 37 38 39 40

atomic_t fscache_n_attr_changed;
atomic_t fscache_n_attr_changed_ok;
atomic_t fscache_n_attr_changed_nobufs;
atomic_t fscache_n_attr_changed_nomem;
atomic_t fscache_n_attr_changed_calls;

atomic_t fscache_n_allocs;
atomic_t fscache_n_allocs_ok;
atomic_t fscache_n_allocs_wait;
atomic_t fscache_n_allocs_nobufs;
41
atomic_t fscache_n_allocs_intr;
42
atomic_t fscache_n_allocs_object_dead;
43 44 45 46 47 48 49 50 51 52
atomic_t fscache_n_alloc_ops;
atomic_t fscache_n_alloc_op_waits;

atomic_t fscache_n_retrievals;
atomic_t fscache_n_retrievals_ok;
atomic_t fscache_n_retrievals_wait;
atomic_t fscache_n_retrievals_nodata;
atomic_t fscache_n_retrievals_nobufs;
atomic_t fscache_n_retrievals_intr;
atomic_t fscache_n_retrievals_nomem;
53
atomic_t fscache_n_retrievals_object_dead;
54 55 56 57 58 59 60 61 62 63
atomic_t fscache_n_retrieval_ops;
atomic_t fscache_n_retrieval_op_waits;

atomic_t fscache_n_stores;
atomic_t fscache_n_stores_ok;
atomic_t fscache_n_stores_again;
atomic_t fscache_n_stores_nobufs;
atomic_t fscache_n_stores_oom;
atomic_t fscache_n_store_ops;
atomic_t fscache_n_store_calls;
64 65 66
atomic_t fscache_n_store_pages;
atomic_t fscache_n_store_radix_deletes;
atomic_t fscache_n_store_pages_over_limit;
67

68 69 70 71
atomic_t fscache_n_store_vmscan_not_storing;
atomic_t fscache_n_store_vmscan_gone;
atomic_t fscache_n_store_vmscan_busy;
atomic_t fscache_n_store_vmscan_cancelled;
72
atomic_t fscache_n_store_vmscan_wait;
73

74 75 76 77 78 79 80 81 82 83
atomic_t fscache_n_marks;
atomic_t fscache_n_uncaches;

atomic_t fscache_n_acquires;
atomic_t fscache_n_acquires_null;
atomic_t fscache_n_acquires_no_cache;
atomic_t fscache_n_acquires_ok;
atomic_t fscache_n_acquires_nobufs;
atomic_t fscache_n_acquires_oom;

84 85 86
atomic_t fscache_n_invalidates;
atomic_t fscache_n_invalidates_run;

87 88 89 90 91 92 93
atomic_t fscache_n_updates;
atomic_t fscache_n_updates_null;
atomic_t fscache_n_updates_run;

atomic_t fscache_n_relinquishes;
atomic_t fscache_n_relinquishes_null;
atomic_t fscache_n_relinquishes_waitcrt;
94
atomic_t fscache_n_relinquishes_retire;
95 96 97 98 99 100 101 102 103 104

atomic_t fscache_n_cookie_index;
atomic_t fscache_n_cookie_data;
atomic_t fscache_n_cookie_special;

atomic_t fscache_n_object_alloc;
atomic_t fscache_n_object_no_alloc;
atomic_t fscache_n_object_lookups;
atomic_t fscache_n_object_lookups_negative;
atomic_t fscache_n_object_lookups_positive;
105
atomic_t fscache_n_object_lookups_timed_out;
106 107 108 109 110 111 112 113 114
atomic_t fscache_n_object_created;
atomic_t fscache_n_object_avail;
atomic_t fscache_n_object_dead;

atomic_t fscache_n_checkaux_none;
atomic_t fscache_n_checkaux_okay;
atomic_t fscache_n_checkaux_update;
atomic_t fscache_n_checkaux_obsolete;

115 116 117 118
atomic_t fscache_n_cop_alloc_object;
atomic_t fscache_n_cop_lookup_object;
atomic_t fscache_n_cop_lookup_complete;
atomic_t fscache_n_cop_grab_object;
119
atomic_t fscache_n_cop_invalidate_object;
120 121 122 123 124 125 126 127 128 129 130 131 132
atomic_t fscache_n_cop_update_object;
atomic_t fscache_n_cop_drop_object;
atomic_t fscache_n_cop_put_object;
atomic_t fscache_n_cop_sync_cache;
atomic_t fscache_n_cop_attr_changed;
atomic_t fscache_n_cop_read_or_alloc_page;
atomic_t fscache_n_cop_read_or_alloc_pages;
atomic_t fscache_n_cop_allocate_page;
atomic_t fscache_n_cop_allocate_pages;
atomic_t fscache_n_cop_write_page;
atomic_t fscache_n_cop_uncache_page;
atomic_t fscache_n_cop_dissociate_pages;

133 134 135 136 137
atomic_t fscache_n_cache_no_space_reject;
atomic_t fscache_n_cache_stale_objects;
atomic_t fscache_n_cache_retired_objects;
atomic_t fscache_n_cache_culled_objects;

138 139 140
/*
 * display the general statistics
 */
141
int fscache_stats_show(struct seq_file *m, void *v)
142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173
{
	seq_puts(m, "FS-Cache statistics\n");

	seq_printf(m, "Cookies: idx=%u dat=%u spc=%u\n",
		   atomic_read(&fscache_n_cookie_index),
		   atomic_read(&fscache_n_cookie_data),
		   atomic_read(&fscache_n_cookie_special));

	seq_printf(m, "Objects: alc=%u nal=%u avl=%u ded=%u\n",
		   atomic_read(&fscache_n_object_alloc),
		   atomic_read(&fscache_n_object_no_alloc),
		   atomic_read(&fscache_n_object_avail),
		   atomic_read(&fscache_n_object_dead));
	seq_printf(m, "ChkAux : non=%u ok=%u upd=%u obs=%u\n",
		   atomic_read(&fscache_n_checkaux_none),
		   atomic_read(&fscache_n_checkaux_okay),
		   atomic_read(&fscache_n_checkaux_update),
		   atomic_read(&fscache_n_checkaux_obsolete));

	seq_printf(m, "Pages  : mrk=%u unc=%u\n",
		   atomic_read(&fscache_n_marks),
		   atomic_read(&fscache_n_uncaches));

	seq_printf(m, "Acquire: n=%u nul=%u noc=%u ok=%u nbf=%u"
		   " oom=%u\n",
		   atomic_read(&fscache_n_acquires),
		   atomic_read(&fscache_n_acquires_null),
		   atomic_read(&fscache_n_acquires_no_cache),
		   atomic_read(&fscache_n_acquires_ok),
		   atomic_read(&fscache_n_acquires_nobufs),
		   atomic_read(&fscache_n_acquires_oom));

174
	seq_printf(m, "Lookups: n=%u neg=%u pos=%u crt=%u tmo=%u\n",
175 176 177
		   atomic_read(&fscache_n_object_lookups),
		   atomic_read(&fscache_n_object_lookups_negative),
		   atomic_read(&fscache_n_object_lookups_positive),
178 179
		   atomic_read(&fscache_n_object_created),
		   atomic_read(&fscache_n_object_lookups_timed_out));
180

181 182 183 184
	seq_printf(m, "Invals : n=%u run=%u\n",
		   atomic_read(&fscache_n_invalidates),
		   atomic_read(&fscache_n_invalidates_run));

185 186 187 188 189
	seq_printf(m, "Updates: n=%u nul=%u run=%u\n",
		   atomic_read(&fscache_n_updates),
		   atomic_read(&fscache_n_updates_null),
		   atomic_read(&fscache_n_updates_run));

190
	seq_printf(m, "Relinqs: n=%u nul=%u wcr=%u rtr=%u\n",
191 192
		   atomic_read(&fscache_n_relinquishes),
		   atomic_read(&fscache_n_relinquishes_null),
193 194
		   atomic_read(&fscache_n_relinquishes_waitcrt),
		   atomic_read(&fscache_n_relinquishes_retire));
195 196 197 198 199 200 201 202

	seq_printf(m, "AttrChg: n=%u ok=%u nbf=%u oom=%u run=%u\n",
		   atomic_read(&fscache_n_attr_changed),
		   atomic_read(&fscache_n_attr_changed_ok),
		   atomic_read(&fscache_n_attr_changed_nobufs),
		   atomic_read(&fscache_n_attr_changed_nomem),
		   atomic_read(&fscache_n_attr_changed_calls));

203
	seq_printf(m, "Allocs : n=%u ok=%u wt=%u nbf=%u int=%u\n",
204 205 206
		   atomic_read(&fscache_n_allocs),
		   atomic_read(&fscache_n_allocs_ok),
		   atomic_read(&fscache_n_allocs_wait),
207 208
		   atomic_read(&fscache_n_allocs_nobufs),
		   atomic_read(&fscache_n_allocs_intr));
209
	seq_printf(m, "Allocs : ops=%u owt=%u abt=%u\n",
210
		   atomic_read(&fscache_n_alloc_ops),
211 212
		   atomic_read(&fscache_n_alloc_op_waits),
		   atomic_read(&fscache_n_allocs_object_dead));
213 214 215 216 217 218 219 220 221 222

	seq_printf(m, "Retrvls: n=%u ok=%u wt=%u nod=%u nbf=%u"
		   " int=%u oom=%u\n",
		   atomic_read(&fscache_n_retrievals),
		   atomic_read(&fscache_n_retrievals_ok),
		   atomic_read(&fscache_n_retrievals_wait),
		   atomic_read(&fscache_n_retrievals_nodata),
		   atomic_read(&fscache_n_retrievals_nobufs),
		   atomic_read(&fscache_n_retrievals_intr),
		   atomic_read(&fscache_n_retrievals_nomem));
223
	seq_printf(m, "Retrvls: ops=%u owt=%u abt=%u\n",
224
		   atomic_read(&fscache_n_retrieval_ops),
225 226
		   atomic_read(&fscache_n_retrieval_op_waits),
		   atomic_read(&fscache_n_retrievals_object_dead));
227 228 229 230 231 232 233

	seq_printf(m, "Stores : n=%u ok=%u agn=%u nbf=%u oom=%u\n",
		   atomic_read(&fscache_n_stores),
		   atomic_read(&fscache_n_stores_ok),
		   atomic_read(&fscache_n_stores_again),
		   atomic_read(&fscache_n_stores_nobufs),
		   atomic_read(&fscache_n_stores_oom));
234
	seq_printf(m, "Stores : ops=%u run=%u pgs=%u rxd=%u olm=%u\n",
235
		   atomic_read(&fscache_n_store_ops),
236 237 238 239
		   atomic_read(&fscache_n_store_calls),
		   atomic_read(&fscache_n_store_pages),
		   atomic_read(&fscache_n_store_radix_deletes),
		   atomic_read(&fscache_n_store_pages_over_limit));
240

241
	seq_printf(m, "VmScan : nos=%u gon=%u bsy=%u can=%u wt=%u\n",
242 243 244
		   atomic_read(&fscache_n_store_vmscan_not_storing),
		   atomic_read(&fscache_n_store_vmscan_gone),
		   atomic_read(&fscache_n_store_vmscan_busy),
245 246
		   atomic_read(&fscache_n_store_vmscan_cancelled),
		   atomic_read(&fscache_n_store_vmscan_wait));
247

248
	seq_printf(m, "Ops    : pend=%u run=%u enq=%u can=%u rej=%u\n",
249 250
		   atomic_read(&fscache_n_op_pend),
		   atomic_read(&fscache_n_op_run),
251
		   atomic_read(&fscache_n_op_enqueue),
252 253
		   atomic_read(&fscache_n_op_cancelled),
		   atomic_read(&fscache_n_op_rejected));
254 255
	seq_printf(m, "Ops    : ini=%u dfr=%u rel=%u gc=%u\n",
		   atomic_read(&fscache_n_op_initialised),
256 257 258
		   atomic_read(&fscache_n_op_deferred_release),
		   atomic_read(&fscache_n_op_release),
		   atomic_read(&fscache_n_op_gc));
259 260 261 262 263 264

	seq_printf(m, "CacheOp: alo=%d luo=%d luc=%d gro=%d\n",
		   atomic_read(&fscache_n_cop_alloc_object),
		   atomic_read(&fscache_n_cop_lookup_object),
		   atomic_read(&fscache_n_cop_lookup_complete),
		   atomic_read(&fscache_n_cop_grab_object));
265 266
	seq_printf(m, "CacheOp: inv=%d upo=%d dro=%d pto=%d atc=%d syn=%d\n",
		   atomic_read(&fscache_n_cop_invalidate_object),
267 268 269 270 271 272 273 274 275 276 277 278 279
		   atomic_read(&fscache_n_cop_update_object),
		   atomic_read(&fscache_n_cop_drop_object),
		   atomic_read(&fscache_n_cop_put_object),
		   atomic_read(&fscache_n_cop_attr_changed),
		   atomic_read(&fscache_n_cop_sync_cache));
	seq_printf(m, "CacheOp: rap=%d ras=%d alp=%d als=%d wrp=%d ucp=%d dsp=%d\n",
		   atomic_read(&fscache_n_cop_read_or_alloc_page),
		   atomic_read(&fscache_n_cop_read_or_alloc_pages),
		   atomic_read(&fscache_n_cop_allocate_page),
		   atomic_read(&fscache_n_cop_allocate_pages),
		   atomic_read(&fscache_n_cop_write_page),
		   atomic_read(&fscache_n_cop_uncache_page),
		   atomic_read(&fscache_n_cop_dissociate_pages));
280 281 282 283 284
	seq_printf(m, "CacheEv: nsp=%d stl=%d rtr=%d cul=%d\n",
		   atomic_read(&fscache_n_cache_no_space_reject),
		   atomic_read(&fscache_n_cache_stale_objects),
		   atomic_read(&fscache_n_cache_retired_objects),
		   atomic_read(&fscache_n_cache_culled_objects));
285 286
	return 0;
}