V4/usr/man/manx/tm.8

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including files from this version of Unix. 
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NAME		tm  --  provide time information
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SYNOPSIS	tm__
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DESCRIPTION	tm__
is used to provide timing information.
Output like the following
is given:
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   tim 371:51:09     2:00.8
   ovh  20:00:33       17.0
   swp  13:43:20        4.6
   dsk  27:14:35        4.5
   idl 533:08:03     1:33.3
   usr  24:53:50        1.2
   der    0,  54     0,   0
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The first column of numbers gives totals in the named categories
since the last time the system was cold-booted;  the second
column gives the changes since the last time tm__ was invoked.
The top left number is badly truncated and should be ignored.
ovh___ is time spent
executing in the system;
swp___ is time waiting for swap I/O;
dsk___ is time spent waiting for
file system disk I/O; idl___ is idle time; usr___ is user execution
time; der___ is RF disk error count (left number) and RK disk error
count (right number).

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FILES		/dev/rf0 (for absolute times);
/tmp/ttmp for differential timing history.
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SEE ALSO	time(I), file system(V)
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DIAGNOSTICS	--
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BUGS		--