.\" -*- nroff -*-
-.TH E2FREEFRAG 8
+.TH E2FREEFRAG 8 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@"
.SH NAME
e2freefrag \- report free space fragmentation information
.SH SYNOPSIS
.SH OPTIONS
.TP
.BI \-c " chunk_kb"
-Desired size of chunk. It is specified in units of kilobytes (KB). If no
+If a chunk size is specified, then
+.B e2freefrag
+will print how many free chunks of size
.I chunk_kb
-is specified on the command line, then the default value is 1024KB.
+are available in units of kilobytes (Kb). The chunk size must be a
+power of two and be larger than filesystem block size.
.TP
.BI \-h
Print the usage of the program.
.br
Blocksize: 4096 bytes
.br
-Total blocks: 5120710
-.br
-Free blocks: 831744 (16.2%)
-.br
-Chunk size: 1048576 bytes (256 blocks)
-.br
-Total chunks: 20003
+Total blocks: 1504085
.br
-Free chunks: 2174 (10.9%)
+Free blocks: 292995 (19.5%)
.br
-Min free chunk: 4 KB
+Min. free extent: 4 KB
.br
-Max free chunk: 24576 KB
+Max. free extent: 24008 KB
.br
-Avg. free chunk: 340 KB
+Avg. free extent: 252 KB
.br
-HISTOGRAM OF FREE CHUNK SIZES:
+HISTOGRAM OF FREE EXTENT SIZES:
.br
- Range Free chunks
+Extent Size Range : Free extents Free Blocks Percent
.br
- 4K... 8K- : 2824
+ 4K... 8K- : 704 704 0.2%
.br
- 8K... 16K- : 1760
+ 8K... 16K- : 810 1979 0.7%
.br
- 16K... 32K- : 1857
+ 16K... 32K- : 843 4467 1.5%
.br
- 32K... 64K- : 1003
+ 32K... 64K- : 579 6263 2.1%
.br
- 64K... 128K- : 616
+ 64K... 128K- : 493 11067 3.8%
.br
- 128K... 256K- : 479
+ 128K... 256K- : 394 18097 6.2%
.br
- 256K... 512K- : 302
+ 256K... 512K- : 281 25477 8.7%
.br
- 512K... 1024K- : 238
+ 512K... 1024K- : 253 44914 15.3%
.br
- 1M... 2M- : 213
+ 1M... 2M- : 143 51897 17.7%
.br
- 2M... 4M- : 173
+ 2M... 4M- : 73 50683 17.3%
.br
- 4M... 8M- : 287
+ 4M... 8M- : 37 52417 17.9%
.br
- 8M... 16M- : 4
+ 8M... 16M- : 7 19028 6.5%
.br
- 16M... 32M- : 1
+ 16M... 32M- : 1 6002 2.0%
.SH AUTHOR
This version of e2freefrag was written by Rupesh Thakare, and modified by
Andreas Dilger <adilger@sun.com>, and Kalpak Shah.