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Top Forums Shell Programming and Scripting Script to find the top 100 most popular pages Post 302517683 by DGPickett on Wednesday 27th of April 2011 12:39:45 PM
Old 04-27-2011
Well, it sounds like you should not try to do too much at once! You have a sector start and length, so convert to sector range first last, and then to page range first last, and then iterate the pages in that inclusive range. For instance, 123 45 is 123 - 167 is 30 - 41 is 30, 31, 32, ..., 41. This assumes a zero-based sector and page numbering.

Use grep to filter out just the writes, do the conversions, and send the page writes to:
Code:
sort | uniq -c | sort -nr | head -100

If your conversion is too slow in bash/ksh/sh, you can move it to PERL/JAVA/C++/C. If your sort set gets too big, in place of "sort | uniq -c", you can use my aggsx.c in memory aggregator -l option: https://www.unix.com/shell-programmin...roup-unix.html If you want it really fast, do it all in C using a big array of int or long long. You might even pipe the trace to it, and print out periodic reports. Even better would be to decontruct your trace and integrate part of it, so you can work all in int/long, not string numbers.

Last edited by DGPickett; 04-27-2011 at 01:49 PM..
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ncheck_hfs(1M)															    ncheck_hfs(1M)

NAME
ncheck_hfs: ncheck - generate a list of path names from inode numbers for a HFS file system SYNOPSIS
inode-numbers] [special ...] DESCRIPTION
when invoked without arguments, generates a list of path names corresponding to the inode numbers of all files contained on the HFS file systems listed in If special is specified, ncheck reports on the special only. Path names generated by are relative to the given special. Names of directory files are followed by Options Allow printing of the names and which are ordinarily suppressed. Specify the HFS file system type. Report only on files whose inode numbers are specified on the command line, in inode-numbers. inode-numbers is a comma separated list of inode numbers. Report only on special files and regular files with set-user-ID mode. The option is intended to discover concealed violations of security policy. Echo the completed command line, but performs no other action. The command line is generated by incorporating the user-specified options and other information derived from This option allows the user to verify the command line. Report only on files using sector numbers specified on the command line in sector_ranges. sector_ranges is a comma separated list of sector ranges. A sector range is a starting sector number and an ending sector number separated by a dash, or just a sector number. The sec- tor numbers should be in DEV_BSIZE units. If no pathname contains the sector number it will be reported as free or containing file system structure. Sectors beyond the end of the file system will be reported as illegal. Access Control Lists Continuation inodes (that is, inodes containing additional access control list information) are quietly skipped since they do not corre- spond to any path name. EXAMPLES
Execute the command on all special in Execute the command on HFS file system EXTERNAL INFLUENCES
International Code Set Support Single- and multi-byte character code sets are supported. DIAGNOSTICS
When the file system structure is improper, denotes the ``parent'' of a parentless file and a path-name beginning with denotes a loop. AUTHOR
was developed by AT&T and HP. FILES
Specifies the default file system type. Static information about the file systems. SEE ALSO
acl(5), fsck(1M), fstab(4), fs_wrapper(5), ncheck(1M), sort(1). STANDARDS CONFORMANCE
ncheck_hfs(1M)
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