I'm building Sage on one of my SPARCs which does not have much RAM
(only 2 GB), though its enough to build Sage OK. But I noticed when
building the documenation, the memory usage is quite high.
This is the output from 'prstat' - the Solaris tool like 'top'.
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
4191 drkirkby 476M 400M cpu1 50 0 0:35:17 50% python/1
10783 drkirkby 4512K 4144K cpu0 58 0 0:00:00 0.1% prstat/1
657 drkirkby 8320K 1880K sleep 59 0 0:00:36 0.0% sshd/1
2451 drkirkby 8344K 2728K sleep 59 0 0:00:00 0.0% sshd/1
2453 drkirkby 3000K 2448K sleep 59 0 0:00:00 0.0% bash/1
4150 drkirkby 6464K 4896K sleep 59 0 0:00:00 0.0% python/1
4124 drkirkby 1184K 976K sleep 59 0 0:00:00 0.0% tee/1
289 root 2320K 1280K sleep 100 - 0:00:07 0.0% xntpd/1
82 root 4216K 3032K sleep 59 0 0:00:03 0.0% nscd/26
69 root 3256K 1376K sleep 59 0 0:00:03 0.0% picld/6
7 root 11M 1504K sleep 59 0 0:00:05 0.0% svc.startd/13
85 root 2488K 648K sleep 59 0 0:00:00 0.0% syseventd/14
88 root 2520K 448K sleep 59 0 0:00:00 0.0% powerd/3
650 root 8416K 2624K sleep 59 0 0:00:00 0.0% sshd/1
180 root 2600K 192K sleep 59 0 0:00:00 0.0% cron/1
Total: 66 processes, 174 lwps, load averages: 1.00, 1.14, 1.27
Is this normal? It seems a lot to build some documents to me. The
process is basically CPU bound, using 50% of the CPU on this dual
processor machine. (2 x 900 MHz UltraSPARC III+ CPUs).
The two columns of interest are defined as
SIZE
The total virtual memory size of the process, including
all mapped files and devices, in kilobytes (K), mega-
bytes (M), or gigabytes (G).
RSS
The resident set size of the process (RSS), in kilobytes
(K), megabytes (M), or gigabytes (G). The RSS value is
an estimate provided by proc(4) that might underestimate
the actual resident set size. Users who want to get more
accurate usage information for capacity planning should
use the -x option to pmap(1) instead.
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