[tlug] top command: meaning of 'm' in memory related values?

[Hector Akamine <akamine@example.com>]

Hi,
Does anybody know what is the meaning of the 'm' in the VIRT and RES
values in the output of top? From the man page, VIRT and RES values
are in kb (kilobytes not kilobits I guess?) , but no hint on what the
'm' means.
Example output below

# top
top - 22:26:42 up 48 days, 23:40,  2 users,  load average: 0.00, 0.00, 0.00
Tasks: 105 total,   1 running, 104 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   1020388k total,   918952k used,   101436k free,   144820k buffers
Swap:  2064376k total,        0k used,  2064376k free,   149308k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1328 apache    20   0  322m  42m 6680 S  0.0  4.3   1:07.95 httpd
 1190 apache    20   0  322m  42m 6680 S  0.0  4.3   1:16.36 httpd
 1189 apache    20   0  322m  42m 6676 S  0.0  4.3   1:08.91 httpd
 1193 apache    20   0  322m  42m 6676 S  0.0  4.3   1:09.54 httpd
 1323 apache    20   0  322m  42m 6680 S  0.0  4.3   1:10.37 httpd
 1262 apache    20   0  322m  42m 6672 S  0.0  4.2   1:13.90 httpd
 1058 carbon    20   0  292m  13m 1680 S  0.0  1.3  19:14.87 carbon-cache
 1385 noc       20   0  191m  12m 3580 S  0.0  1.3  14:06.03 python
 1153 root      20   0  197m  11m 1432 S  0.0  1.2  13:32.05 supervisord
 1197 noc       20   0  178m 9160 3328 S  0.0  0.9   2:58.87 python


Thank you