Lines Matching +full:cpu +full:- +full:viewed
12 FS-Cache mediates between cache backends (such as CacheFS) and network
15 +---------+
16 | | +--------------+
17 | NFS |--+ | |
18 | | | +-->| CacheFS |
19 +---------+ | +----------+ | | /dev/hda5 |
20 | | | | +--------------+
21 +---------+ +-->| | |
22 | | | |--+
23 | AFS |----->| FS-Cache |
24 | | | |--+
25 +---------+ +-->| | |
26 | | | | +--------------+
27 +---------+ | +----------+ | | |
28 | | | +-->| CacheFiles |
29 | ISOFS |--+ | /var/cache |
30 | | +--------------+
31 +---------+
33 Or to look at it another way, FS-Cache is a module that provides a caching
37 +---------+
41 +---------+
45 | +----------+
47 +---------+ | |
49 | NFS |----->| FS-Cache |
50 | | | |--+
51 +---------+ | | | +--------------+ +--------------+
53 V +----------+ +-->| CacheFiles |-->| Ext3 |
54 +---------+ | /var/cache | | /dev/sda6 |
55 | | +--------------+ +--------------+
58 +---------+ +--------------+ |
63 +---------+ +--------------+
67 +---------+ +--------------+
70 FS-Cache does not follow the idea of completely loading every netfs file
83 one-off access of a small portion of it (such as might be done with the
90 FS-Cache provides the following facilities:
104 netfs. The simplest cookie is just a NULL pointer - indicating nothing
107 (6) The netfs is allowed to propose - dynamically - any index hierarchy it
113 indicates that page A is at index B of the data-file represented by cookie
119 (8) Cookies can be "retired" upon release. At this point FS-Cache will mark
130 FS-Cache maintains a virtual indexing tree in which all indices, files, objects
136 +------------------------------------+
140 +--------------------------+ +-----------+
144 +------------+ +---------------+ +----------+
148 +---+---+ +-----+ +---+ +------+------+ +-----+----+
152 PG0 +-------+
156 +---+---+
163 (*) The NFS primary index contains per-server indices. Each server index is
167 attribute objects themselves have page-array contents.
169 (*) The AFS primary index contains per-cell indices. Each cell index contains
170 per-logical-volume indices. Each of volume index contains up to three
171 indices for the read-write, read-only and backup mirrors of those volumes.
175 The very top index is the FS-Cache master index in which individual netfs's
179 children. Any index with non-index object children will be assumed to only
183 The netfs API to FS-Cache can be found in:
185 Documentation/filesystems/caching/netfs-api.txt
187 The cache backend API to FS-Cache can be found in:
189 Documentation/filesystems/caching/backend-api.txt
201 If FS-Cache is compiled with the following options enabled:
211 This shows counts of a number of events that can happen in FS-Cache:
241 run=N Number of upd reqs granted CPU time
247 nbf=N Number of attr changed rejected -ENOBUFS
248 oom=N Number of attr changed failed -ENOMEM
249 run=N Number of attr changed ops given CPU time
253 nbf=N Number of alloc reqs rejected -ENOBUFS
254 int=N Number of alloc reqs aborted -ERESTARTSYS
256 owt=N Number of alloc reqs waited for CPU time
261 nod=N Number of retr reqs returned -ENODATA
262 nbf=N Number of retr reqs rejected -ENOBUFS
263 int=N Number of retr reqs aborted -ERESTARTSYS
264 oom=N Number of retr reqs failed -ENOMEM
266 owt=N Number of retr reqs waited for CPU time
271 nbf=N Number of store reqs rejected -ENOBUFS
272 oom=N Number of store reqs failed -ENOMEM
274 run=N Number of store reqs granted CPU time
280 bsy=N Number of release reqs ignored due to in-progress store
283 run=N Number of times async ops given CPU time
290 gc=N Number of deferred-release async ops garbage collected
291 CacheOp alo=N Number of in-progress alloc_object() cache ops
292 luo=N Number of in-progress lookup_object() cache ops
293 luc=N Number of in-progress lookup_complete() cache ops
294 gro=N Number of in-progress grab_object() cache ops
295 upo=N Number of in-progress update_object() cache ops
296 dro=N Number of in-progress drop_object() cache ops
297 pto=N Number of in-progress put_object() cache ops
298 syn=N Number of in-progress sync_cache() cache ops
299 atc=N Number of in-progress attr_changed() cache ops
300 rap=N Number of in-progress read_or_alloc_page() cache ops
301 ras=N Number of in-progress read_or_alloc_pages() cache ops
302 alp=N Number of in-progress allocate_page() cache ops
303 als=N Number of in-progress allocate_pages() cache ops
304 wrp=N Number of in-progress write_page() cache ops
305 ucp=N Number of in-progress uncache_page() cache ops
306 dsp=N Number of in-progress dissociate_pages() cache ops
320 between 0 jiffies and HZ-1 jiffies a variety of tasks took to run. The
340 If CONFIG_FSCACHE_OBJECT_LIST is enabled, the FS-Cache facility will maintain a
341 list of all the objects currently allocated and allow them to be viewed
377 TY Cookie type (IX - index, DT - data, hex - special)
421 If CONFIG_FSCACHE_DEBUG is enabled, the FS-Cache facility can have runtime