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man page for fsstat

fsstat(1M)						  System Administration Commands						fsstat(1M)

NAME
fsstat - report file system statistics SYNOPSIS
fsstat [-a|f|i|n|v] [-T | u|d] {-F | {fstype|path}...} [interval [count]] DESCRIPTION
fsstat reports kernel file operation activity by the file system type (fstype) or by the path name, which is converted to a mount point. The first set of lines of output reports all activity since: o The file system module was loaded (in the case of fstype) o The file system was mounted (in the case of mount point) Statistics are gathered at the file system independent layer at both the fstype and the mount point levels. However, not all file system types are represented in the gathering of statistics. (See the NOTES section of this man page.) The output of fsstat is dependent on the mode (option) requested. All statistic fields are displayed using "smart numbers" which automati- cally scale the units in a human readable form that fits in a maximum of 5 characters. For example: 100 is displayed as 100 2048 is displayed as 2K 3000000 is displayed as 2.86M The unit modifiers are: K (Kbyte), M (Mbyte), G (Gbyte), T (terabyte), P (petabyte), and E (exabyte). During the execution of fsstat, the state of the system can change. If relevant, a state change message is included in the fsstat output in one of the following forms: <<mount point no longer available: {path}>> <<file system module no longer loaded: {fstype}>> After the state change messages are displayed, fsstat continues to display the statistics as directed. If all of the fstypes and mount points that fsstat was reporting on are no longer available, then fsstat exits. The user is required to specify the -F option (all available file system types) or a list of one or more fstypes and/or mount points. The default report shows general file system activity. This display combines similar operations into general categories as follows: new file Number of creation operations for file system objects (for example, files, directories, symlinks, etc.) name remov Number of name removal operations name chng Number of name change operations attr get Number of object attribute retrieval operations attr set Number of object attribute change operations lookup ops Number of object lookup operations rddir ops Number of read directory operations read ops Number of data read operations read bytes Bytes transferred by data read operations write ops Number of data write operations write bytes Bytes transferred by data write operations The entity being reported on (fstype or mount point) is displayed in the last column. OPTIONS
The following options are supported: -a Report the activity for kernel attribute operations. The following statistics are reported: getattr Number of file attribute retrieval calls setattr Number of file attribute modification calls getsec Number of file security attribute retrieval calls setsec Number of file security attribute modification calls The entity being reported on (fstype or mount point) is displayed in the last column. -f Report the full activity for all kernel file operations. Each file operation is listed in the left column. The following statis- tics are reported for each operation: #ops Number of calls for this operation bytes Average transfer size in bytes (only applies to read, write, readdir) The entity being reported on (fstype or mount point) is displayed in the first row. -i Reports the activity for kernel I/O operations. The following statistics are reported: read ops Number of data read calls read bytes Number of bytes read write ops Number of data write calls write bytes Number of bytes written rddir ops Number of read directory calls rddir bytes Number of bytes read by reading directories rwlock ops Number of internal file system lock operations rwulock ops Number of internal file system unlock operations The entity being reported on (fstype or mount point) is displayed in the last column. -n Reports the activity for kernel naming operations. The following statistics are reported: lookup Number of file name retrieval calls creat Number of file creation calls remov Number of file remove calls link Number of link calls renam Number of file renaming calls mkdir Number of directory creation calls rmdir Number of directory removal calls rddir Number of directory read calls symlink Number of symlink creation calls rdlink Number of symlink read calls The entity being reported on (fstype or mount point) is displayed in the last column. -v Reports the activity for calls to the virtual memory operations. The following statistics are reported. map Number of calls mapping a file addmap Number of calls setting additional mapping to a mapped file delmap Number of calls deleting mapping to a file getpag Number of calls retrieving a page of data from a file putpag Number of calls writing a page of data to a file pagio Number of calls to transfer pages in file system swap files The entity being reported on (fstype or mount point) is displayed in the last column. -F Report on all available file system types. -T u|d Display a time stamp. Specify u for a printed representation of the internal representation of time (see time(2)) Specify d for the standard date for- mat. (See date(1)). The time stamp is only used when an interval is set. OPERANDS
The following operands are supported: count Display only count reports. fstype Explicitly specify the file system type(s) to be reported. The file system module must be loaded. interval Report once each interval seconds. path Specify the path(s) of the mount point(s) to be reported. If path is not a mount point, the mount point containing path will be determined and displayed in the output. If no interval and no count are specified, a single report is printed and fsstat exits. If an interval is specified but no count is speci- fied, fsstat prints reports every interval seconds indefinitely until the command is interrupted. EXAMPLES
Example 1 Displaying General Activity The following example shows general activity for all file system types. $ fsstat -F new name name attr attr lookup rddir read read write write file remov chng get set ops ops ops bytes ops bytes 313K 214K 38.5K 2.16M 56.2K 8.36M 52.8K 19.7M 39.9G 18.8M 39.1G ufs 0 0 0 2.95K 0 3.81K 282 2.52K 466K 0 0 proc 0 0 0 0 0 0 0 0 0 0 0 nfs 10 8 2 86 9 98 15 413 103M 8.43K 1.05G zfs 13 14 4 98 16 125 10 1.01K 258M 15.9K 127M lofs 8.73K 3.29K 5.25K 55.3K 37 1.20M 44 37.9K 38.3M 47.2K 35.9M tmpfs 0 0 0 4.93K 0 0 0 1.08K 913K 0 0 mntfs 3 2 1 503 3 897 13 122 25.8K 128 272K nfs3 10 8 0 615 10 10.1K 18 61 45.6K 292 2.26M nfs4 Example 2 Displaying Naming Activity The following example shows the naming activity for ufs, nfs, nfs3, nfs4, and tmpfs: $ fsstat -n ufs nfs nfs3 nfs4 tmpfs lookup creat remov link renam mkdir rmdir rddir symlnk rdlnk 3.57M 3.10K 586 6 24 115 100 30.2K 5 330K ufs 0 0 0 0 0 0 0 0 0 0 nfs 18.3K 3 5 0 0 0 0 1.03K 2 346 nfs3 535 0 0 0 0 0 0 46 0 4 nfs4 146 24 15 0 0 4 0 4 0 0 tmpfs Example 3 Displaying Attribute Activity The following example shows the attribute activity for the FS type ufs and the mounted file systems "/" and "/export/home" every three sec- onds for every third iteration: # fsstat -a ufs / /export/home 3 3 getattr setattr getsec setsec 378K 91.9K 11.8K 0 ufs 367K 82.3K 11.6K 0 / 11.3K 9.6K 198 0 /export/home 4.97K 2.27K 163 0 ufs 3.94K 1.36K 162 0 / 1.03K 927 1 0 /export/home 2.30K 1.06K 73 0 ufs 1.95K 766 71 0 / 361 317 2 0 /export/home 2.33K 1.06K 78 0 ufs 1.64K 451 77 0 / 711 631 1 0 /export/home Example 4 Displaying File Operation Statistics The following example shows the statistics for each file operation for "/" (using the -f option): $ fsstat -f / Mountpoint: / operation #ops bytes open 8.54K close 9.8K read 43.6K 65.9M write 1.57K 2.99M ioctl 2.06K setfl 4 getattr 40.3K setattr 38 access 9.19K lookup 203K create 595 remove 56 link 0 rename 9 mkdir 19 rmdir 0 readdir 2.02K 2.27M symlink 4 readlink 8.31K fsync 199 inactive 2.96K fid 0 rwlock 47.2K rwunlock 47.2K seek 29.1K cmp 42.9K frlock 4.45K space 8 realvp 3.25K getpage 104K putpage 2.69K map 13.2K addmap 34.4K delmap 33.4K poll 287 dump 0 pathconf 54 pageio 0 dumpctl 0 dispose 23.8K getsecattr 697 setsecattr 0 shrlock 0 vnevent 0 ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of fsstat: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, LC_TIME, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 A fatal error occurred. A fatal error could be a failed system call or another internal error. 2 Invalid command-line options were specified. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |See below. | +-----------------------------+-----------------------------+ The command-line options are Unstable. The human-readable output is not considered an interface. SEE ALSO
date(1), time(2), attributes(5) NOTES
All display options (-a, -f, -i, -n, -v) are mutually exclusive. Entering more than one of these options will result in an error. The fstype and path operands must appear after the option, but before the interval or count on the command line. For example, "fsstat -a fstype interval". Preference is given to fstype so that if a user wishes to see the statistics for a directory that has the same name as an fstype (for example, ufs), then the path must be specified unambiguously (for example, ./ufs). Similarly, in order to define a file with a numeric name (for example, "10") from an interval or count operand, the name should be prefixed accordingly (for example, ./10). When an interval is used, headers repeat after more than 12 lines of statistics have been displayed and the set of lines to be displayed in the current interval have completed. Statistics are not displayed for all pseudo-filesystems. The output displayed with the -F option shows which of the loaded filesystem types are supported. Unbundled file systems may not be recognized by fsstat. The command-line options are classified as Unstable and could change. The output is not considered to be an interface. The construction of higher level software tools depend on either the command-line options or the output of fsstat is not recommended. SunOS 5.11 5 Jan 2007 fsstat(1M)

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