Rational ClearCase Commands Referenceannotate
apropos
catcr
catcs
cc.icon
cc.magic
cd
chactivity
chbl
checkin
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checkvob
chevent
chflevel
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clearfsimport
cleargetlog
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clearmake.options
clearmrgman
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clearviewupdate
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deliver
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diffbl
diffcr
diff
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edcs
endview
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fmt_ccase
getcache
get
getlog
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ln
lock
lsactivity
lsbl
lscheckout
lsclients
lscomp
lsdo
lsfolder
lshistory
ls
lslock
lsmaster
lspool
lsprivate
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lsregion
lsreplica
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lsstgloc
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lstype
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lsvob
lsvtree
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mkactivity
mkattr
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mkbl
mkbranch
mkbrtype
mkcomp
mkdir
mkelem
mkeltype
mkfolder
mkhlink
mkhltype
mklabel
mklbtype
mkpool
mkproject
mkregion
mkstgloc
mkstream
mktag
mktrigger
mktrtype
mkview
mkvob
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protectvob
pwd
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reformatview
reformatvob
register
relocate
rename
reqmaster
reserve
rgy_backup
rgy_check
rgy_passwd
rgy_switchover
rmactivity
rmattr
rmbl
rmbranch
rmcomp
rmdo
rmelem
rmfolder
rmhlink
rmlabel
rmmerge
rmname
rmpool
rmproject
rmregion
rmstgloc
rmstream
rmtag
rmtrigger
rmtype
rmver
rmview
rmvob
schedule
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scrubber
setactivity
setcache
setcs
setplevel
setsite
setview
shell
snapshot.conf
softbench_ccase
space
startview
type_manager
umount
uncheckout
unlock
unregister
unreserve
update
version_selector
view_scrubber
vob_restore
vob_scrubber
vob_sidwalk
vob_snapshot
vob_snapshot_setup
wildcards_ccase
winkin
xclearcase
xcleardiff
xmldiffmrg
SYNOPSIS
DESCRIPTION
The getcache command displays cache information for a view. In ClearCase dynamic views, you can also use getcache to get information on the multiversion file system (MVFS). View cache information includes cumulative statistics about the number of operations performed and the size of each of the view's caches. (You can specify the total size for the view's caches with the setcache command; that total is allocated among the individual caches.) getcache can also reset the view or MVFS statistics with the –reset option.
Note: Two sets of statistics are kept for a view: the set displayed by –all, which is reset only when the view_server is restarted (with endview –server or by rebooting); and the normal set, which you can zero with the –reset option.
With the –host option, getcache displays the default size of the view cache for the current host. With the –site option, getcache displays the site-wide default size for view caches. With the –mvfs option, getcache displays information about a host's MVFS caches, which are used to optimize file system performance. (For more information about optimizing performance, see the chapters on performance tuning in the Administrator's Guide.)
getcache can sometimes report cache use greater than 100%. The object cache, in particular, can show cache use exceeding 100% because other objects, including cache objects, can reference the object cache. Usually, this means the object cache size is too small compared to the sizes of other caches.
RESTRICTIONS
getcache -mvfs -reset requires root privileges on UNIX and local administrator privileges on Windows. No other restrictions apply
OPTIONS AND ARGUMENTS
Specifying the Cache Information to Display
- Default
- None.
- –vie·w
- Displays cache information for a single
view.
- –vie·w –hos·t
- Displays the default cache size for the
current host. If this value has not been set, getcache displays
the following message:
This value is stored in the view_cache_size file (in /var/adm/rational/clearcase/config/ (UNIX) or ccase-home-dir\var\config\ (Windows)) and is set with setcache –view –host.
- –vie·w –sit·e
- Displays the site-wide default size for
view caches. If this value has not been set, getcache displays
the following message:
This value is stored in the ClearCase or ClearCase LT site config registries and is set with setcache –view –site or setsite.
- –mvfs
- Displays cache information for the MVFS.
These values are set with setcache –mvfs.
Specifying How Much Information to Display
- Default
- With –view, displays
statistics gathered since the last reset and the current cache sizes. With –mvfs,
displays current cache sizes/utilizations and advice on cache sizing.
- –a·ll
- Displays view statistics since the time
that the view_server was started. These statistics
are not reset when you execute getcache –reset.
- –view –s·hort
- Displays only cache sizes.
- –mvfs –s·hort
- Displays only cache sizes and utilizations.
- –mvfs –per·sistent
- Displays only those values which have been
set to persist across MVFS restarts.
EXAMPLES
The UNIX examples in this section are written for use in csh. If you use another shell, you may need to use different quoting and escaping conventions.
The Windows examples that include wildcards or quoting are written for use in cleartool interactive mode. If you use cleartool single-command mode, you may need to change the wildcards and quoting to make your command interpreter process the command appropriately.
In cleartool single-command mode, cmd-context represents the UNIX shell or Windows command interpreter prompt, followed by the cleartool command. In cleartool interactive mode, cmd-context represents the interactive cleartool prompt.
- Display
cache information for the cep_dev view:
cmd-context getcache –view cep_dev
Lookup cache: 29% full, 1121 entries ( 56.8K), 15832 requests, 75% hits
Readdir cache: 4% full, 24 entries ( 36.5K), 4159 requests, 83% hits
Fstat cache: 31% full, 281 entries (105.1K), 55164 requests, 100% hits
Object cache: 26% full, 1281 entries (176.6K), 40626 requests, 72% hits
Total memory used for view caches: 375.0Kbytes
The current view server cache limits are:
Lookup cache: 201312 bytes
Readdir cache: 838860 bytes
Fstat cache: 352296 bytes
Object cache: 704592 bytes
Total cache size limit: 2097152 bytes - Display
cache information for the MVFS:
cmd-context getcache –mvfs
Mnodes: (active/max) 1043/4096 (25.464%)
Mnode freelist: 885/900 (98.333%)
Cltxt freelist: 41/819 (5.006%)
DNC: Files: 219/800 (27.375%)
Directories: 108/200 (54.000%)
ENOENT: 106/400 (26.500%)
RPC handles: 2/5 (40.000%)
Current MVFS cache enable settings:
Attribute cache: enabled
Close-to-open revalidation: enabled
Name cache: enabled
Readlink cache: enabled
Root version cache: enabled
VOB freelist low-water mark: 1620
Cleartext freelist low-water mark: 1768
Readdir block cache size: 4
MVFS scaling factor: 1
Attribute cache miss summary (for tuning suggestions, see the
documentation for administering ClearCase):
Attribute cache total misses: 1215 (100.00%)
Close-to-open (view pvt) misses: 434 ( 35.72%)
Generation (parallel build) misses: 0 ( 0.00%)
Cache timeout misses: 297 ( 24.44%)
Cache fill (new file) misses: 1 ( 0.08%)
Event time (vob/view mod) misses: 484 ( 39.84%)