projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 51e95bed DR |
1 | What: /sys/kernel/slab |
| 2 | Date: May 2007 | |
| 3 | KernelVersion: 2.6.22 | |
| 4 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 5 | Christoph Lameter <cl@linux-foundation.org> | |
| 6 | Description: | |
| 7 | The /sys/kernel/slab directory contains a snapshot of the | |
| 8 | internal state of the SLUB allocator for each cache. Certain | |
| 9 | files may be modified to change the behavior of the cache (and | |
| 10 | any cache it aliases, if any). | |
| 11 | Users: kernel memory tuning tools | |
| 12 | ||
| 13 | What: /sys/kernel/slab/cache/aliases | |
| 14 | Date: May 2007 | |
| 15 | KernelVersion: 2.6.22 | |
| 16 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 17 | Christoph Lameter <cl@linux-foundation.org> | |
| 18 | Description: | |
| 19 | The aliases file is read-only and specifies how many caches | |
| 20 | have merged into this cache. | |
| 21 | ||
| 22 | What: /sys/kernel/slab/cache/align | |
| 23 | Date: May 2007 | |
| 24 | KernelVersion: 2.6.22 | |
| 25 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 26 | Christoph Lameter <cl@linux-foundation.org> | |
| 27 | Description: | |
| 28 | The align file is read-only and specifies the cache's object | |
| 29 | alignment in bytes. | |
| 30 | ||
| 31 | What: /sys/kernel/slab/cache/alloc_calls | |
| 32 | Date: May 2007 | |
| 33 | KernelVersion: 2.6.22 | |
| 34 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 35 | Christoph Lameter <cl@linux-foundation.org> | |
| 36 | Description: | |
| 37 | The alloc_calls file is read-only and lists the kernel code | |
| 38 | locations from which allocations for this cache were performed. | |
| 39 | The alloc_calls file only contains information if debugging is | |
| 40 | enabled for that cache (see Documentation/vm/slub.txt). | |
| 41 | ||
| 42 | What: /sys/kernel/slab/cache/alloc_fastpath | |
| 43 | Date: February 2008 | |
| 44 | KernelVersion: 2.6.25 | |
| 45 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 46 | Christoph Lameter <cl@linux-foundation.org> | |
| 47 | Description: | |
| 78eb00cc DR |
48 | The alloc_fastpath file shows how many objects have been |
| 49 | allocated using the fast path. It can be written to clear the | |
| 50 | current count. | |
| 51e95bed DR |
51 | Available when CONFIG_SLUB_STATS is enabled. |
| 52 | ||
| 53 | What: /sys/kernel/slab/cache/alloc_from_partial | |
| 54 | Date: February 2008 | |
| 55 | KernelVersion: 2.6.25 | |
| 56 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 57 | Christoph Lameter <cl@linux-foundation.org> | |
| 58 | Description: | |
| 78eb00cc DR |
59 | The alloc_from_partial file shows how many times a cpu slab has |
| 60 | been full and it has been refilled by using a slab from the list | |
| 61 | of partially used slabs. It can be written to clear the current | |
| 62 | count. | |
| 51e95bed DR |
63 | Available when CONFIG_SLUB_STATS is enabled. |
| 64 | ||
| 65 | What: /sys/kernel/slab/cache/alloc_refill | |
| 66 | Date: February 2008 | |
| 67 | KernelVersion: 2.6.25 | |
| 68 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 69 | Christoph Lameter <cl@linux-foundation.org> | |
| 70 | Description: | |
| 78eb00cc DR |
71 | The alloc_refill file shows how many times the per-cpu freelist |
| 72 | was empty but there were objects available as the result of | |
| 73 | remote cpu frees. It can be written to clear the current count. | |
| 51e95bed DR |
74 | Available when CONFIG_SLUB_STATS is enabled. |
| 75 | ||
| 76 | What: /sys/kernel/slab/cache/alloc_slab | |
| 77 | Date: February 2008 | |
| 78 | KernelVersion: 2.6.25 | |
| 79 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 80 | Christoph Lameter <cl@linux-foundation.org> | |
| 81 | Description: | |
| 78eb00cc DR |
82 | The alloc_slab file is shows how many times a new slab had to |
| 83 | be allocated from the page allocator. It can be written to | |
| 84 | clear the current count. | |
| 51e95bed DR |
85 | Available when CONFIG_SLUB_STATS is enabled. |
| 86 | ||
| 87 | What: /sys/kernel/slab/cache/alloc_slowpath | |
| 88 | Date: February 2008 | |
| 89 | KernelVersion: 2.6.25 | |
| 90 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 91 | Christoph Lameter <cl@linux-foundation.org> | |
| 92 | Description: | |
| 78eb00cc DR |
93 | The alloc_slowpath file shows how many objects have been |
| 94 | allocated using the slow path because of a refill or | |
| 95 | allocation from a partial or new slab. It can be written to | |
| 96 | clear the current count. | |
| 51e95bed DR |
97 | Available when CONFIG_SLUB_STATS is enabled. |
| 98 | ||
| 99 | What: /sys/kernel/slab/cache/cache_dma | |
| 100 | Date: May 2007 | |
| 101 | KernelVersion: 2.6.22 | |
| 102 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 103 | Christoph Lameter <cl@linux-foundation.org> | |
| 104 | Description: | |
| 105 | The cache_dma file is read-only and specifies whether objects | |
| 106 | are from ZONE_DMA. | |
| 107 | Available when CONFIG_ZONE_DMA is enabled. | |
| 108 | ||
| 109 | What: /sys/kernel/slab/cache/cpu_slabs | |
| 110 | Date: May 2007 | |
| 111 | KernelVersion: 2.6.22 | |
| 112 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 113 | Christoph Lameter <cl@linux-foundation.org> | |
| 114 | Description: | |
| 115 | The cpu_slabs file is read-only and displays how many cpu slabs | |
| 116 | are active and their NUMA locality. | |
| 117 | ||
| 118 | What: /sys/kernel/slab/cache/cpuslab_flush | |
| 119 | Date: April 2009 | |
| 120 | KernelVersion: 2.6.31 | |
| 121 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 122 | Christoph Lameter <cl@linux-foundation.org> | |
| 123 | Description: | |
| 78eb00cc DR |
124 | The file cpuslab_flush shows how many times a cache's cpu slabs |
| 125 | have been flushed as the result of destroying or shrinking a | |
| 126 | cache, a cpu going offline, or as the result of forcing an | |
| 127 | allocation from a certain node. It can be written to clear the | |
| 128 | current count. | |
| 51e95bed DR |
129 | Available when CONFIG_SLUB_STATS is enabled. |
| 130 | ||
| 131 | What: /sys/kernel/slab/cache/ctor | |
| 132 | Date: May 2007 | |
| 133 | KernelVersion: 2.6.22 | |
| 134 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 135 | Christoph Lameter <cl@linux-foundation.org> | |
| 136 | Description: | |
| 137 | The ctor file is read-only and specifies the cache's object | |
| 138 | constructor function, which is invoked for each object when a | |
| 139 | new slab is allocated. | |
| 140 | ||
| 141 | What: /sys/kernel/slab/cache/deactivate_empty | |
| 142 | Date: February 2008 | |
| 143 | KernelVersion: 2.6.25 | |
| 144 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 145 | Christoph Lameter <cl@linux-foundation.org> | |
| 146 | Description: | |
| 78eb00cc DR |
147 | The deactivate_empty file shows how many times an empty cpu slab |
| 148 | was deactivated. It can be written to clear the current count. | |
| 51e95bed DR |
149 | Available when CONFIG_SLUB_STATS is enabled. |
| 150 | ||
| 151 | What: /sys/kernel/slab/cache/deactivate_full | |
| 152 | Date: February 2008 | |
| 153 | KernelVersion: 2.6.25 | |
| 154 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 155 | Christoph Lameter <cl@linux-foundation.org> | |
| 156 | Description: | |
| 78eb00cc DR |
157 | The deactivate_full file shows how many times a full cpu slab |
| 158 | was deactivated. It can be written to clear the current count. | |
| 51e95bed DR |
159 | Available when CONFIG_SLUB_STATS is enabled. |
| 160 | ||
| 161 | What: /sys/kernel/slab/cache/deactivate_remote_frees | |
| 162 | Date: February 2008 | |
| 163 | KernelVersion: 2.6.25 | |
| 164 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 165 | Christoph Lameter <cl@linux-foundation.org> | |
| 166 | Description: | |
| 78eb00cc DR |
167 | The deactivate_remote_frees file shows how many times a cpu slab |
| 168 | has been deactivated and contained free objects that were freed | |
| 169 | remotely. It can be written to clear the current count. | |
| 51e95bed DR |
170 | Available when CONFIG_SLUB_STATS is enabled. |
| 171 | ||
| 172 | What: /sys/kernel/slab/cache/deactivate_to_head | |
| 173 | Date: February 2008 | |
| 174 | KernelVersion: 2.6.25 | |
| 175 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 176 | Christoph Lameter <cl@linux-foundation.org> | |
| 177 | Description: | |
| 78eb00cc DR |
178 | The deactivate_to_head file shows how many times a partial cpu |
| 179 | slab was deactivated and added to the head of its node's partial | |
| 180 | list. It can be written to clear the current count. | |
| 51e95bed DR |
181 | Available when CONFIG_SLUB_STATS is enabled. |
| 182 | ||
| 183 | What: /sys/kernel/slab/cache/deactivate_to_tail | |
| 184 | Date: February 2008 | |
| 185 | KernelVersion: 2.6.25 | |
| 186 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 187 | Christoph Lameter <cl@linux-foundation.org> | |
| 188 | Description: | |
| 78eb00cc DR |
189 | The deactivate_to_tail file shows how many times a partial cpu |
| 190 | slab was deactivated and added to the tail of its node's partial | |
| 191 | list. It can be written to clear the current count. | |
| 51e95bed DR |
192 | Available when CONFIG_SLUB_STATS is enabled. |
| 193 | ||
| 194 | What: /sys/kernel/slab/cache/destroy_by_rcu | |
| 195 | Date: May 2007 | |
| 196 | KernelVersion: 2.6.22 | |
| 197 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 198 | Christoph Lameter <cl@linux-foundation.org> | |
| 199 | Description: | |
| 200 | The destroy_by_rcu file is read-only and specifies whether | |
| 201 | slabs (not objects) are freed by rcu. | |
| 202 | ||
| 203 | What: /sys/kernel/slab/cache/free_add_partial | |
| 204 | Date: February 2008 | |
| 205 | KernelVersion: 2.6.25 | |
| 206 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 207 | Christoph Lameter <cl@linux-foundation.org> | |
| 208 | Description: | |
| 78eb00cc DR |
209 | The free_add_partial file shows how many times an object has |
| 210 | been freed in a full slab so that it had to added to its node's | |
| 211 | partial list. It can be written to clear the current count. | |
| 51e95bed DR |
212 | Available when CONFIG_SLUB_STATS is enabled. |
| 213 | ||
| 214 | What: /sys/kernel/slab/cache/free_calls | |
| 215 | Date: May 2007 | |
| 216 | KernelVersion: 2.6.22 | |
| 217 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 218 | Christoph Lameter <cl@linux-foundation.org> | |
| 219 | Description: | |
| 220 | The free_calls file is read-only and lists the locations of | |
| 221 | object frees if slab debugging is enabled (see | |
| 222 | Documentation/vm/slub.txt). | |
| 223 | ||
| 224 | What: /sys/kernel/slab/cache/free_fastpath | |
| 225 | Date: February 2008 | |
| 226 | KernelVersion: 2.6.25 | |
| 227 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 228 | Christoph Lameter <cl@linux-foundation.org> | |
| 229 | Description: | |
| 78eb00cc DR |
230 | The free_fastpath file shows how many objects have been freed |
| 231 | using the fast path because it was an object from the cpu slab. | |
| 232 | It can be written to clear the current count. | |
| 51e95bed DR |
233 | Available when CONFIG_SLUB_STATS is enabled. |
| 234 | ||
| 235 | What: /sys/kernel/slab/cache/free_frozen | |
| 236 | Date: February 2008 | |
| 237 | KernelVersion: 2.6.25 | |
| 238 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 239 | Christoph Lameter <cl@linux-foundation.org> | |
| 240 | Description: | |
| 78eb00cc DR |
241 | The free_frozen file shows how many objects have been freed to |
| 242 | a frozen slab (i.e. a remote cpu slab). It can be written to | |
| 243 | clear the current count. | |
| 51e95bed DR |
244 | Available when CONFIG_SLUB_STATS is enabled. |
| 245 | ||
| 246 | What: /sys/kernel/slab/cache/free_remove_partial | |
| 247 | Date: February 2008 | |
| 248 | KernelVersion: 2.6.25 | |
| 249 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 250 | Christoph Lameter <cl@linux-foundation.org> | |
| 251 | Description: | |
| 78eb00cc DR |
252 | The free_remove_partial file shows how many times an object has |
| 253 | been freed to a now-empty slab so that it had to be removed from | |
| 254 | its node's partial list. It can be written to clear the current | |
| 255 | count. | |
| 51e95bed DR |
256 | Available when CONFIG_SLUB_STATS is enabled. |
| 257 | ||
| 258 | What: /sys/kernel/slab/cache/free_slab | |
| 259 | Date: February 2008 | |
| 260 | KernelVersion: 2.6.25 | |
| 261 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 262 | Christoph Lameter <cl@linux-foundation.org> | |
| 263 | Description: | |
| 78eb00cc DR |
264 | The free_slab file shows how many times an empty slab has been |
| 265 | freed back to the page allocator. It can be written to clear | |
| 266 | the current count. | |
| 51e95bed DR |
267 | Available when CONFIG_SLUB_STATS is enabled. |
| 268 | ||
| 269 | What: /sys/kernel/slab/cache/free_slowpath | |
| 270 | Date: February 2008 | |
| 271 | KernelVersion: 2.6.25 | |
| 272 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 273 | Christoph Lameter <cl@linux-foundation.org> | |
| 274 | Description: | |
| 78eb00cc DR |
275 | The free_slowpath file shows how many objects have been freed |
| 276 | using the slow path (i.e. to a full or partial slab). It can | |
| 277 | be written to clear the current count. | |
| 51e95bed DR |
278 | Available when CONFIG_SLUB_STATS is enabled. |
| 279 | ||
| 280 | What: /sys/kernel/slab/cache/hwcache_align | |
| 281 | Date: May 2007 | |
| 282 | KernelVersion: 2.6.22 | |
| 283 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 284 | Christoph Lameter <cl@linux-foundation.org> | |
| 285 | Description: | |
| 286 | The hwcache_align file is read-only and specifies whether | |
| 287 | objects are aligned on cachelines. | |
| 288 | ||
| 289 | What: /sys/kernel/slab/cache/min_partial | |
| 290 | Date: February 2009 | |
| 291 | KernelVersion: 2.6.30 | |
| 292 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 293 | David Rientjes <rientjes@google.com> | |
| 294 | Description: | |
| 295 | The min_partial file specifies how many empty slabs shall | |
| 296 | remain on a node's partial list to avoid the overhead of | |
| 297 | allocating new slabs. Such slabs may be reclaimed by utilizing | |
| 298 | the shrink file. | |
| 299 | ||
| 300 | What: /sys/kernel/slab/cache/object_size | |
| 301 | Date: May 2007 | |
| 302 | KernelVersion: 2.6.22 | |
| 303 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 304 | Christoph Lameter <cl@linux-foundation.org> | |
| 305 | Description: | |
| 306 | The object_size file is read-only and specifies the cache's | |
| 307 | object size. | |
| 308 | ||
| 309 | What: /sys/kernel/slab/cache/objects | |
| 310 | Date: May 2007 | |
| 311 | KernelVersion: 2.6.22 | |
| 312 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 313 | Christoph Lameter <cl@linux-foundation.org> | |
| 314 | Description: | |
| 315 | The objects file is read-only and displays how many objects are | |
| 316 | active and from which nodes they are from. | |
| 317 | ||
| 318 | What: /sys/kernel/slab/cache/objects_partial | |
| 319 | Date: April 2008 | |
| 320 | KernelVersion: 2.6.26 | |
| 321 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 322 | Christoph Lameter <cl@linux-foundation.org> | |
| 323 | Description: | |
| 324 | The objects_partial file is read-only and displays how many | |
| 325 | objects are on partial slabs and from which nodes they are | |
| 326 | from. | |
| 327 | ||
| 328 | What: /sys/kernel/slab/cache/objs_per_slab | |
| 329 | Date: May 2007 | |
| 330 | KernelVersion: 2.6.22 | |
| 331 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 332 | Christoph Lameter <cl@linux-foundation.org> | |
| 333 | Description: | |
| 334 | The file objs_per_slab is read-only and specifies how many | |
| 335 | objects may be allocated from a single slab of the order | |
| 336 | specified in /sys/kernel/slab/cache/order. | |
| 337 | ||
| 338 | What: /sys/kernel/slab/cache/order | |
| 339 | Date: May 2007 | |
| 340 | KernelVersion: 2.6.22 | |
| 341 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 342 | Christoph Lameter <cl@linux-foundation.org> | |
| 343 | Description: | |
| 344 | The order file specifies the page order at which new slabs are | |
| 345 | allocated. It is writable and can be changed to increase the | |
| 346 | number of objects per slab. If a slab cannot be allocated | |
| 347 | because of fragmentation, SLUB will retry with the minimum order | |
| 348 | possible depending on its characteristics. | |
| 888a214d SG |
349 | When debug_guardpage_minorder=N (N > 0) parameter is specified |
| 350 | (see Documentation/kernel-parameters.txt), the minimum possible | |
| 351 | order is used and this sysfs entry can not be used to change | |
| 352 | the order at run time. | |
| 51e95bed DR |
353 | |
| 354 | What: /sys/kernel/slab/cache/order_fallback | |
| 355 | Date: April 2008 | |
| 356 | KernelVersion: 2.6.26 | |
| 357 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 358 | Christoph Lameter <cl@linux-foundation.org> | |
| 359 | Description: | |
| 78eb00cc DR |
360 | The order_fallback file shows how many times an allocation of a |
| 361 | new slab has not been possible at the cache's order and instead | |
| 362 | fallen back to its minimum possible order. It can be written to | |
| 363 | clear the current count. | |
| 51e95bed DR |
364 | Available when CONFIG_SLUB_STATS is enabled. |
| 365 | ||
| 366 | What: /sys/kernel/slab/cache/partial | |
| 367 | Date: May 2007 | |
| 368 | KernelVersion: 2.6.22 | |
| 369 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 370 | Christoph Lameter <cl@linux-foundation.org> | |
| 371 | Description: | |
| 372 | The partial file is read-only and displays how long many | |
| 373 | partial slabs there are and how long each node's list is. | |
| 374 | ||
| 375 | What: /sys/kernel/slab/cache/poison | |
| 376 | Date: May 2007 | |
| 377 | KernelVersion: 2.6.22 | |
| 378 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 379 | Christoph Lameter <cl@linux-foundation.org> | |
| 380 | Description: | |
| 381 | The poison file specifies whether objects should be poisoned | |
| 382 | when a new slab is allocated. | |
| 383 | ||
| 384 | What: /sys/kernel/slab/cache/reclaim_account | |
| 385 | Date: May 2007 | |
| 386 | KernelVersion: 2.6.22 | |
| 387 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 388 | Christoph Lameter <cl@linux-foundation.org> | |
| 389 | Description: | |
| 390 | The reclaim_account file specifies whether the cache's objects | |
| 391 | are reclaimable (and grouped by their mobility). | |
| 392 | ||
| 393 | What: /sys/kernel/slab/cache/red_zone | |
| 394 | Date: May 2007 | |
| 395 | KernelVersion: 2.6.22 | |
| 396 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 397 | Christoph Lameter <cl@linux-foundation.org> | |
| 398 | Description: | |
| 399 | The red_zone file specifies whether the cache's objects are red | |
| 400 | zoned. | |
| 401 | ||
| 402 | What: /sys/kernel/slab/cache/remote_node_defrag_ratio | |
| 403 | Date: January 2008 | |
| 404 | KernelVersion: 2.6.25 | |
| 405 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 406 | Christoph Lameter <cl@linux-foundation.org> | |
| 407 | Description: | |
| 408 | The file remote_node_defrag_ratio specifies the percentage of | |
| 409 | times SLUB will attempt to refill the cpu slab with a partial | |
| 410 | slab from a remote node as opposed to allocating a new slab on | |
| 411 | the local node. This reduces the amount of wasted memory over | |
| 412 | the entire system but can be expensive. | |
| 413 | Available when CONFIG_NUMA is enabled. | |
| 414 | ||
| 415 | What: /sys/kernel/slab/cache/sanity_checks | |
| 416 | Date: May 2007 | |
| 417 | KernelVersion: 2.6.22 | |
| 418 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 419 | Christoph Lameter <cl@linux-foundation.org> | |
| 420 | Description: | |
| 421 | The sanity_checks file specifies whether expensive checks | |
| 422 | should be performed on free and, at minimum, enables double free | |
| 423 | checks. Caches that enable sanity_checks cannot be merged with | |
| 424 | caches that do not. | |
| 425 | ||
| 426 | What: /sys/kernel/slab/cache/shrink | |
| 427 | Date: May 2007 | |
| 428 | KernelVersion: 2.6.22 | |
| 429 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 430 | Christoph Lameter <cl@linux-foundation.org> | |
| 431 | Description: | |
| 432 | The shrink file is written when memory should be reclaimed from | |
| 433 | a cache. Empty partial slabs are freed and the partial list is | |
| 434 | sorted so the slabs with the fewest available objects are used | |
| 435 | first. | |
| 436 | ||
| 437 | What: /sys/kernel/slab/cache/slab_size | |
| 438 | Date: May 2007 | |
| 439 | KernelVersion: 2.6.22 | |
| 440 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 441 | Christoph Lameter <cl@linux-foundation.org> | |
| 442 | Description: | |
| 443 | The slab_size file is read-only and specifies the object size | |
| 444 | with metadata (debugging information and alignment) in bytes. | |
| 445 | ||
| 446 | What: /sys/kernel/slab/cache/slabs | |
| 447 | Date: May 2007 | |
| 448 | KernelVersion: 2.6.22 | |
| 449 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 450 | Christoph Lameter <cl@linux-foundation.org> | |
| 451 | Description: | |
| 452 | The slabs file is read-only and displays how long many slabs | |
| 453 | there are (both cpu and partial) and from which nodes they are | |
| 454 | from. | |
| 455 | ||
| 456 | What: /sys/kernel/slab/cache/store_user | |
| 457 | Date: May 2007 | |
| 458 | KernelVersion: 2.6.22 | |
| 459 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 460 | Christoph Lameter <cl@linux-foundation.org> | |
| 461 | Description: | |
| 462 | The store_user file specifies whether the location of | |
| 463 | allocation or free should be tracked for a cache. | |
| 464 | ||
| 465 | What: /sys/kernel/slab/cache/total_objects | |
| 466 | Date: April 2008 | |
| 467 | KernelVersion: 2.6.26 | |
| 468 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 469 | Christoph Lameter <cl@linux-foundation.org> | |
| 470 | Description: | |
| 471 | The total_objects file is read-only and displays how many total | |
| 472 | objects a cache has and from which nodes they are from. | |
| 473 | ||
| 474 | What: /sys/kernel/slab/cache/trace | |
| 475 | Date: May 2007 | |
| 476 | KernelVersion: 2.6.22 | |
| 477 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 478 | Christoph Lameter <cl@linux-foundation.org> | |
| 479 | Description: | |
| 480 | The trace file specifies whether object allocations and frees | |
| 481 | should be traced. | |
| 482 | ||
| 483 | What: /sys/kernel/slab/cache/validate | |
| 484 | Date: May 2007 | |
| 485 | KernelVersion: 2.6.22 | |
| 486 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | |
| 487 | Christoph Lameter <cl@linux-foundation.org> | |
| 488 | Description: | |
| 489 | Writing to the validate file causes SLUB to traverse all of its | |
| 490 | cache's objects and check the validity of metadata. |