Detailed file statistics

Detailed file statistics are provided for each file listed in the Most Active Files report.

The Most Active Files report's stanzas can be used to determine what access has been made to the file. In addition to the number of total bytes transferred, opens, reads, writes, and lseeks, the user can also determine the read/write size and times.

FILE: Name of the file. The full path name is given, if possible.
volume: Name of the logical volume/file system containing the file.
inode: I-node number for the file within its file system.
opens: Number of times the file was opened while monitored.
total bytes xfrd: Total number of bytes read/written from/to the file.
reads: Number of read calls against the file.
read sizes (bytes): Read transfer-size statistics (avg/min/max/sdev), in bytes.
read times (msec): Read response-time statistics (avg/min/max/sdev), in milliseconds.
writes: Number of write calls against the file.
write sizes (bytes): Write transfer-size statistics.
write times (msec): Write response-time statistics.
lseeks: Number of lseek() subroutine calls.

The read sizes and write sizes will give you an idea of how efficiently your application is reading and writing information. Use a multiple of 4 KB pages for best results.