130 lines
4.5 KiB
C
130 lines
4.5 KiB
C
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/*
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Coda: an Experimental Distributed File System
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Release 3.1
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Copyright (c) 1987-1998 Carnegie Mellon University
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All Rights Reserved
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Permission to use, copy, modify and distribute this software and its
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documentation is hereby granted, provided that both the copyright
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notice and this permission notice appear in all copies of the
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software, derivative works or modified versions, and any portions
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thereof, and that both notices appear in supporting documentation, and
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that credit is given to Carnegie Mellon University in all documents
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and publicity pertaining to direct or indirect use of this code or its
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derivatives.
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CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS,
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SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS
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FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON
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DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
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RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF
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ANY DERIVATIVE WORK.
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Carnegie Mellon encourages users of this software to return any
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improvements or extensions that they make, and to grant Carnegie
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Mellon the rights to redistribute these changes without encumbrance.
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*/
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/* $Header: /afs/cs/project/coda-src/cvs/coda/kernel-src/vfs/freebsd/cfs/coda_opstats.h,v 1.5 1998/08/18 17:05:25 rvb Exp $ */
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/*
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* operation stats: what the minicache can intercept that
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* *isn't* seen by venus. These stats are kept to augment
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* the stats maintained by the Volume-Session mechanism.
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*/
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/* vfsops:
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* mount: not currently bounced to Venus
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* umount: nope
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* root: only first call, rest is cached.
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* statfs: none (bogus)
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* sync: none (bogus)
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* vget: all
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*/
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#define CFS_MOUNT_STATS 0
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#define CFS_UMOUNT_STATS 1
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#define CFS_ROOT_STATS 2
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#define CFS_STATFS_STATS 3
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#define CFS_SYNC_STATS 4
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#define CFS_VGET_STATS 5
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#define CFS_VFSOPS_SIZE 6
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/* vnodeops:
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* open: all to venus
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* close: all to venus
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* rdrw: bogus. Maybe redirected to UFS.
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* May call open/close for internal opens/closes
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* (Does exec not call open?)
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* ioctl: causes a lookupname
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* passes through
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* select: can't get there from here.
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* getattr: can be satsified by cache
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* setattr: all go through
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* access: can be satisfied by cache
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* readlink: can be satisfied by cache
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* fsync: passes through
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* inactive: passes through
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* lookup: can be satisfied by cache
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* create: passes through
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* remove: passes through
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* link: passes through
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* rename: passes through
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* mkdir: passes through
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* rmdir: passes through
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* symlink: passes through
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* readdir: may be redirected to UFS
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* may cause an "internal" open/close
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*/
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#define CFS_OPEN_STATS 0
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#define CFS_CLOSE_STATS 1
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#define CFS_RDWR_STATS 2
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#define CFS_IOCTL_STATS 3
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#define CFS_SELECT_STATS 4
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#define CFS_GETATTR_STATS 5
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#define CFS_SETATTR_STATS 6
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#define CFS_ACCESS_STATS 7
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#define CFS_READLINK_STATS 8
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#define CFS_FSYNC_STATS 9
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#define CFS_INACTIVE_STATS 10
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#define CFS_LOOKUP_STATS 11
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#define CFS_CREATE_STATS 12
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#define CFS_REMOVE_STATS 13
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#define CFS_LINK_STATS 14
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#define CFS_RENAME_STATS 15
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#define CFS_MKDIR_STATS 16
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#define CFS_RMDIR_STATS 17
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#define CFS_SYMLINK_STATS 18
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#define CFS_READDIR_STATS 19
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#define CFS_VNODEOPS_SIZE 20
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/*
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* I propose the following structres:
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*/
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struct cfs_op_stats {
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int opcode; /* vfs opcode */
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long entries; /* number of times call attempted */
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long sat_intrn; /* number of times call satisfied by cache */
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long unsat_intrn; /* number of times call failed in cache, but
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was not bounced to venus proper. */
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long gen_intrn; /* number of times call generated internally */
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/* (do we need that?) */
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};
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/*
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* With each call to the minicache, we'll bump the counters whenver
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* a call is satisfied internally (through the cache or through a
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* redirect), and whenever an operation is caused internally.
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* Then, we can add the total operations caught by the minicache
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* to the world-wide totals, and leave a caveat for the specific
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* graphs later.
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*/
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