3 tristate "General filesystem local caching manager"
4 depends on EXPERIMENTAL
7 This option enables a generic filesystem caching manager that can be
8 used by various network and other filesystems to cache data locally.
9 Different sorts of caches can be plugged in, depending on the
12 See Documentation/filesystems/caching/fscache.txt for more information.
15 bool "Gather statistical information on local caching"
16 depends on FSCACHE && PROC_FS
18 This option causes statistical information to be gathered on local
19 caching and exported through file:
21 /proc/fs/fscache/stats
23 The gathering of statistics adds a certain amount of overhead to
24 execution as there are a quite a few stats gathered, and on a
25 multi-CPU system these may be on cachelines that keep bouncing
26 between CPUs. On the other hand, the stats are very useful for
27 debugging purposes. Saying 'Y' here is recommended.
29 See Documentation/filesystems/caching/fscache.txt for more information.
31 config FSCACHE_HISTOGRAM
32 bool "Gather latency information on local caching"
33 depends on FSCACHE && PROC_FS
35 This option causes latency information to be gathered on local
36 caching and exported through file:
38 /proc/fs/fscache/histogram
40 The generation of this histogram adds a certain amount of overhead to
41 execution as there are a number of points at which data is gathered,
42 and on a multi-CPU system these may be on cachelines that keep
43 bouncing between CPUs. On the other hand, the histogram may be
44 useful for debugging purposes. Saying 'N' here is recommended.
46 See Documentation/filesystems/caching/fscache.txt for more information.
52 This permits debugging to be dynamically enabled in the local caching
53 management module. If this is set, the debugging output may be
54 enabled by setting bits in /sys/modules/fscache/parameter/debug.
56 See Documentation/filesystems/caching/fscache.txt for more information.