diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/nfs_iostat.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/nfs_iostat.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/ANDROID_3.4.5/include/linux/nfs_iostat.h b/ANDROID_3.4.5/include/linux/nfs_iostat.h deleted file mode 100644 index 9dcbbe9a..00000000 --- a/ANDROID_3.4.5/include/linux/nfs_iostat.h +++ /dev/null @@ -1,133 +0,0 @@ -/* - * User-space visible declarations for NFS client per-mount - * point statistics - * - * Copyright (C) 2005, 2006 Chuck Lever <cel@netapp.com> - * - * NFS client per-mount statistics provide information about the - * health of the NFS client and the health of each NFS mount point. - * Generally these are not for detailed problem diagnosis, but - * simply to indicate that there is a problem. - * - * These counters are not meant to be human-readable, but are meant - * to be integrated into system monitoring tools such as "sar" and - * "iostat". As such, the counters are sampled by the tools over - * time, and are never zeroed after a file system is mounted. - * Moving averages can be computed by the tools by taking the - * difference between two instantaneous samples and dividing that - * by the time between the samples. - */ - -#ifndef _LINUX_NFS_IOSTAT -#define _LINUX_NFS_IOSTAT - -#define NFS_IOSTAT_VERS "1.1" - -/* - * NFS byte counters - * - * 1. SERVER - the number of payload bytes read from or written - * to the server by the NFS client via an NFS READ or WRITE - * request. - * - * 2. NORMAL - the number of bytes read or written by applications - * via the read(2) and write(2) system call interfaces. - * - * 3. DIRECT - the number of bytes read or written from files - * opened with the O_DIRECT flag. - * - * These counters give a view of the data throughput into and out - * of the NFS client. Comparing the number of bytes requested by - * an application with the number of bytes the client requests from - * the server can provide an indication of client efficiency - * (per-op, cache hits, etc). - * - * These counters can also help characterize which access methods - * are in use. DIRECT by itself shows whether there is any O_DIRECT - * traffic. NORMAL + DIRECT shows how much data is going through - * the system call interface. A large amount of SERVER traffic - * without much NORMAL or DIRECT traffic shows that applications - * are using mapped files. - * - * NFS page counters - * - * These count the number of pages read or written via nfs_readpage(), - * nfs_readpages(), or their write equivalents. - * - * NB: When adding new byte counters, please include the measured - * units in the name of each byte counter to help users of this - * interface determine what exactly is being counted. - */ -enum nfs_stat_bytecounters { - NFSIOS_NORMALREADBYTES = 0, - NFSIOS_NORMALWRITTENBYTES, - NFSIOS_DIRECTREADBYTES, - NFSIOS_DIRECTWRITTENBYTES, - NFSIOS_SERVERREADBYTES, - NFSIOS_SERVERWRITTENBYTES, - NFSIOS_READPAGES, - NFSIOS_WRITEPAGES, - __NFSIOS_BYTESMAX, -}; - -/* - * NFS event counters - * - * These counters provide a low-overhead way of monitoring client - * activity without enabling NFS trace debugging. The counters - * show the rate at which VFS requests are made, and how often the - * client invalidates its data and attribute caches. This allows - * system administrators to monitor such things as how close-to-open - * is working, and answer questions such as "why are there so many - * GETATTR requests on the wire?" - * - * They also count anamolous events such as short reads and writes, - * silly renames due to close-after-delete, and operations that - * change the size of a file (such operations can often be the - * source of data corruption if applications aren't using file - * locking properly). - */ -enum nfs_stat_eventcounters { - NFSIOS_INODEREVALIDATE = 0, - NFSIOS_DENTRYREVALIDATE, - NFSIOS_DATAINVALIDATE, - NFSIOS_ATTRINVALIDATE, - NFSIOS_VFSOPEN, - NFSIOS_VFSLOOKUP, - NFSIOS_VFSACCESS, - NFSIOS_VFSUPDATEPAGE, - NFSIOS_VFSREADPAGE, - NFSIOS_VFSREADPAGES, - NFSIOS_VFSWRITEPAGE, - NFSIOS_VFSWRITEPAGES, - NFSIOS_VFSGETDENTS, - NFSIOS_VFSSETATTR, - NFSIOS_VFSFLUSH, - NFSIOS_VFSFSYNC, - NFSIOS_VFSLOCK, - NFSIOS_VFSRELEASE, - NFSIOS_CONGESTIONWAIT, - NFSIOS_SETATTRTRUNC, - NFSIOS_EXTENDWRITE, - NFSIOS_SILLYRENAME, - NFSIOS_SHORTREAD, - NFSIOS_SHORTWRITE, - NFSIOS_DELAY, - NFSIOS_PNFS_READ, - NFSIOS_PNFS_WRITE, - __NFSIOS_COUNTSMAX, -}; - -/* - * NFS local caching servicing counters - */ -enum nfs_stat_fscachecounters { - NFSIOS_FSCACHE_PAGES_READ_OK, - NFSIOS_FSCACHE_PAGES_READ_FAIL, - NFSIOS_FSCACHE_PAGES_WRITTEN_OK, - NFSIOS_FSCACHE_PAGES_WRITTEN_FAIL, - NFSIOS_FSCACHE_PAGES_UNCACHED, - __NFSIOS_FSCACHEMAX, -}; - -#endif /* _LINUX_NFS_IOSTAT */ |