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# CS:APP Malloc Lab
# Handout files for students
#
# Copyright (c) 2002, R. Bryant and D. O'Hallaron, All rights reserved.
# May not be used, modified, or copied without permission.
#
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Main Files:
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mm.{c,h}
Your solution malloc package. mm.c is the file that you
will be handing in, and is the only file you should modify.
mdriver.c
The malloc driver that tests your mm.c file
short{1,2}-bal.rep
Two tiny tracefiles to help you get started.
Makefile
Builds the driver
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Other support files for the driver
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config.h Configures the malloc lab driver
fsecs.{c,h} Wrapper function for the different timer packages
clock.{c,h} Routines for accessing the Pentium and Alpha cycle counters
fcyc.{c,h} Timer functions based on cycle counters
ftimer.{c,h} Timer functions based on interval timers and gettimeofday()
memlib.{c,h} Models the heap and sbrk function
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Building and running the driver
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To build the driver, type "make" to the shell.
To run the driver on a tiny test trace:
unix> mdriver -V -f short1-bal.rep
The -V option prints out helpful tracing and summary information.
To get a list of the driver flags:
unix> mdriver -h
Team Name:david61song
Member 1 :david song:none@none.none
Using default tracefiles in traces/
Measuring performance with gettimeofday().
Results for mm malloc:
trace valid util ops secs Kops
0 yes 98% 5694 0.010454 545
1 yes 99% 5848 0.009309 628
2 yes 99% 6648 0.017281 385
3 yes 99% 5380 0.013588 396
4 yes 66% 14400 0.000284 50633
5 yes 92% 4800 0.006823 704
6 yes 91% 4800 0.006235 770
7 yes 54% 12000 0.173194 69
8 yes 47% 24000 0.233843 103
9 yes 27% 14401 0.058287 247
10 yes 34% 14401 0.002562 5621
Total 73% 112372 0.531860 211
Perf index = 44 (util) + 14 (thru) = 58/100
Results for mm malloc:
trace valid util ops secs Kops
0 yes 88% 5694 0.000206 27708
1 yes 91% 5848 0.000183 31869
2 yes 94% 6648 0.000269 24723
3 yes 96% 5380 0.000204 26398
4 yes 66% 14400 0.000271 53058
5 yes 88% 4800 0.000371 12935
6 yes 85% 4800 0.000392 12245
7 yes 54% 12000 0.004020 2985
8 yes 48% 24000 0.005462 4394
9 yes 26% 14401 0.044314 325
10 yes 34% 14401 0.002025 7111
Total 70% 112372 0.057717 1947
Perf index = 42 (util) + 40 (thru) = 82/100