Script started on Mon Sep 24 10:02:48 2007
laptop 0 0 /tmp/b # echo 'echo exit | ruby' > a
laptop 0 0 /tmp/b # /usr/bin/time -hl ./a
0.02s real 0.00s user 0.01s sys
1888 maximum resident set size
56 average shared memory size
316 average unshared data size
192 average unshared stack size
355 page reclaims
0 page faults
0 swaps
0 block input operations
0 block output operations
0 messages sent
0 messages received
0 signals received
5 voluntary context switches
3 involuntary context switches
# Plain Ruby takes 0.01 kernel time, even less user-time. It takes at most
# 1.8MB RAM.
laptop 0 0 /tmp/b # echo 'echo exit | msfcli' > a
laptop 0 0 /tmp/b # chmod 755 a
laptop 0 0 /tmp/b # /usr/bin/time -hl ./a
Usage: /usr/local/bin/msfcli <exploit_name> <option=value> [mode]
snipped output...
9.74s real 8.10s user 0.99s sys
36716 maximum resident set size
4 average shared memory size
22131 average unshared data size
127 average unshared stack size
8609 page reclaims
1 page faults
0 swaps
207 block input operations
0 block output operations
0 messages sent
0 messages received
0 signals received
214 voluntary context switches
1624 involuntary context switches
# msfcli takes 1sec kernel-time and 8sec user-time, and 37MB RAM.
# To cancel the file-system access (207 bio), let's run again:
laptop 0 0 /tmp/b # /usr/bin/time -hl ./a
Usage: /usr/local/bin/msfcli <exploit_name> <option=value> [mode]
=================================================================
snipped again...
9.58s real 8.21s user 0.83s sys
36716 maximum resident set size
4 average shared memory size
22097 average unshared data size
127 average unshared stack size
8608 page reclaims
0 page faults
0 swaps
0 block input operations
0 block output operations
0 messages sent
0 messages received
0 signals received
5 voluntary context switches
1660 involuntary context switches
# With almost no disk access (VFS cached the files for us), the
# times are not very different. 36MB of RAM is the peak consumption.
laptop 0 0 /tmp/b # exit
Script done on Mon Sep 24 10:08:54 2007
