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authorThomas Schwinge <tschwinge@gnu.org>2009-07-07 22:48:47 +0200
committerThomas Schwinge <tschwinge@gnu.org>2009-07-07 22:48:47 +0200
commit7f9e0764e40a5987ba1172a2f26fce17ab81279d (patch)
treeee70b1a8224e693ea90712dad4bd8f1622257964 /open_issues
parent98cbdda2b515b108b74c9228814bebb0e071ce00 (diff)
Issues with the time command(s).
Diffstat (limited to 'open_issues')
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+[[!meta copyright="Copyright © 2009 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+[[!tag open_issue_porting]]
+
+Neither the `time` executable from the GNU time package work completely
+correctly, nor does the GNU Bash built-in one.
+
+ tschwinge@flubber:~ $ \time sleep 2
+ 0.00user 0.00system 9:38:00elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
+ 0inputs+0outputs (0major+0minor)pagefaults 0swaps
+ tschwinge@flubber:~ $ \time sleep 4
+ 0.00user 0.00system 18:50:25elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
+ 0inputs+0outputs (0major+0minor)pagefaults 0swaps
+ tschwinge@flubber:~ $ \time sleep 6
+ 0.00user 0.00system 28:00:53elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
+ 0inputs+0outputs (0major+0minor)pagefaults 0swaps
+ tschwinge@flubber:~ $ time sleep 2
+
+ real 0m2.093s
+ user 0m0.000s
+ sys 0m0.011s
+ tschwinge@flubber:~ $ time sleep 4
+
+ real 0m4.083s
+ user 0m0.000s
+ sys 0m0.010s
+ tschwinge@flubber:~ $ time sleep 6
+
+ real 0m6.164s
+ user 0m0.000s
+ sys 0m0.010s
+
+GNU time's *elapsed* value is off by some factor.
+
+ $ \time factor 1111111111111111111
+ 1111111111111111111: 1111111111111111111
+ 0.00user 0.00system 52:39:24elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
+ 0inputs+0outputs (0major+0minor)pagefaults 0swaps
+ $ time factor 1111111111111111111
+ 1111111111111111111: 1111111111111111111
+
+ real 0m11.424s
+ user 0m0.000s
+ sys 0m0.010s
+
+As above; also here all the running time should be attriuted to *user* time.
+This is probably a [[!taglink open_issue_gnumach]].