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extended-time

Macro
Summary

Produces useful timing information, including information on garbage collection activity.

Package

hcl

Signature

extended-time &body body => timing-info

Arguments

body

The forms to be timed.

Values

timing-info

Timing information on the forms contained in body .

Description

The three columns show, respectively, total time, user time, and system time. "Main promote" indicates promotions from generation 0. "Internal promote" indicates when an attempt to promote from one generation to the next causes promotion of the higher generation, to make room for the objects from the lower generation. "fixup" is a part of the compaction and promotion process.

Example
USER 22 > (hcl:extended-time (hcl:clean-generation-0))
user time    =      1.320 
system time  =      0.100 
Elapsed time =  0:00:01 
Allocation = 144 
0 Page faults
total gc activity             = 0.960000 / 0.900000 /   0.060000 
main promote (0 calls)        = 0.000000 / 0.000000 /   0.000000 
mark and sweep (200 calls)    = 0.960000 / 0.900000 /   0.060000 
internal promote (  100 calls = 0.000000 / 0.000000 /   0.000000 
promote (    0 calls)         = 0.000000 / 0.000000 /   0.000000 
fixup   (  100 calls)         = 0.140000 / 0.120000 /   0.020000 
compact (    0 calls)         = 0.000000 / 0.000000 /   0.000000 
NIL
USER 23 > 
See also

time


LispWorks Reference Manual - 6 Apr 2005

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