diff options
author | Darrick J. Wong <djwong@kernel.org> | 2023-04-04 16:17:00 -0700 |
---|---|---|
committer | Zorro Lang <zlang@kernel.org> | 2023-04-09 20:06:31 +0800 |
commit | c7db4edfe9677f29fb6d4c012257454473974a4f (patch) | |
tree | 874e8f5f67df53b1d98cf912a42d02fe80c9a394 /src | |
parent | a8e4eb5f7d2f2182d6574eb69319af194400ce3e (diff) |
populate: create fewer subdirs when constructing directories
Based on some surveys of aged filesystems, I've noticed that the
proportion of directory children that are subdirectories tends to be
more in the 5-10% range, not the 95% that the current code generates.
Rework popdir.pl so that we can specify arbitrary percentages of
children files, and lower the ratio dramatically.
This shouldn't have any substantive changes in the shape of the
directories that gets generated; it just gets us a more realistic
sample.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>
Diffstat (limited to 'src')
-rwxr-xr-x | src/popdir.pl | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/popdir.pl b/src/popdir.pl index dc0c046b..e89095aa 100755 --- a/src/popdir.pl +++ b/src/popdir.pl @@ -11,7 +11,7 @@ use File::Basename; $progname=$0; GetOptions("start=i" => \$start, "end=i" => \$end, - "file-mult=i" => \$file_mult, + "file-pct=i" => \$file_pct, "incr=i" => \$incr, "format=s" => \$format, "dir=s" => \$dir, @@ -30,8 +30,7 @@ Options: --start=num create names starting with this number (0) --incr=num increment file number by this much (1) --end=num stop at this file number (100) - --file-mult create a regular file when file number is a multiple - of this quantity (20) + --file-pct create this percentage of regular files (90 percent) --remove remove instead of creating --format=str printf formatting string for file name ("%08d") --verbose verbose output @@ -47,17 +46,23 @@ if (defined $dir) { } $start = 0 if (!defined $start); $end = 100 if (!defined $end); -$file_mult = 20 if (!defined $file_mult); +$file_pct = 90 if (!defined $file_pct); $format = "%08d" if (!defined $format); $incr = 1 if (!defined $incr); +if ($file_pct < 0) { + $file_pct = 0; +} elsif ($file_pct > 100) { + $file_pct = 100; +} + for ($i = $start; $i <= $end; $i += $incr) { $fname = sprintf($format, $i); if ($remove) { $verbose && print "rm $fname\n"; unlink($fname) or rmdir($fname) or die("unlink $fname"); - } elsif ($file_mult == 0 or ($i % $file_mult) == 0) { + } elsif (($i % 100) < $file_pct) { # create a file $verbose && print "touch $fname\n"; open(DONTCARE, ">$fname") or die("touch $fname"); |