[tex-live] More subversion retrieval statistics

[Nelson H. F. Beebe]

Yesterday, I ran some experiments with the subversion retrieval of TeX
Live to our main fileserver (Sun Enterprise 2900 running Solaris 10),
starting with an empty target directory, and then doing updates three
times.  The traffic is from Aarhus, Denmark to Salt Lake City, UT,
USA, and times are reported as hh:mm:ss.cc:

	% nice time svn co svn://username@tug.org/texlive/trunk .
	Checked out revision 1547.
	235.84u 539.06s 1:03:53.30 20.2%

Update times (same command):

	14.34u 11.99s 1:21.02 32.4%
	13.88u 8.17s 0:46.36 47.5%
	14.13u 9.36s 0:59.17 39.6%

That is, 64 minutes wall-clock time for the major download, and about
a minute to do an update check.

Measure disk space consumed (about 3GB):

	% nice time du -sk .
	3085957 .
	7.31u 1123.43s 19:50.99 94.9%

Count directories:

	% nice time find . -type d > foo && wc -l foo
	6.46u 1287.21s 21:59.80 98.0%
	57530 foo

Count files:

	% nice time find . -type f > foo && wc -l foo
	8.78u 1365.09s 23:47.55 96.2%
	284705 foo

I then did it on a second, faster, compute server (Sun W40z (quad
AMD64 CPUs) running GNU/Linux Red Hat AS 4):

	% nice time svn co svn://username@tug.org/texlive/trunk .
	Checked out revision 1547.
	51.243u 83.182s 42:46.81 5.2%   0+0k 0+0io 8pf+0w

Update times (same command):
	3.433u 2.206s 2:33.51 3.6%      0+0k 0+0io 28pf+0w
	3.349u 1.753s 0:44.78 11.3%     0+0k 0+0io 0pf+0w
	3.403u 1.758s 0:48.50 10.6%     0+0k 0+0io 0pf+0w

Measure disk space consumed (about 5.3GB):

	% nice time du -sk .
	5286532 .
	0.302u 4.532s 1:22.53 5.8%      0+0k 0+0io 1pf+0w

Count directories:

	% nice time find . -type d > foo && wc -l foo
	0.220u 1.565s 0:07.61 23.3%     0+0k 0+0io 1pf+0w
	57530 foo

Count files:

	% nice time find . -type f > foo && wc -l foo
	0.299u 1.595s 0:01.90 98.9%     0+0k 0+0io 0pf+0w
	284705 foo

-------------------------------------------------------------------------------
- Nelson H. F. Beebe                    Tel: +1 801 581 5254                  -
- University of Utah                    FAX: +1 801 581 4148                  -
- Department of Mathematics, 110 LCB    Internet e-mail: beebe at math.utah.edu  -
- 155 S 1400 E RM 233                       beebe at acm.org  beebe at computer.org -
- Salt Lake City, UT 84112-0090, USA    URL: http://www.math.utah.edu/~beebe/ -
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