is this normal?

[AlexMcCann]

top - 18:12:13 up 3 days, 59 min, 1 user, load average: 0.13, 0.13, 0.09
Tasks: 300 total, 1 running, 299 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.8% us, 0.8% sy, 0.0% ni, 97.2% id, 0.0% wa, 0.0% hi, 0.2% si
Mem: 2069320k total, 1619188k used, 450132k free, 166516k buffers
Swap: 2031608k total, 0k used, 2031608k free, 1212524k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
27098 apache 15 0 22952 10m 2920 S 1 0.5 0:07.42 httpd
27433 apache 15 0 22988 10m 2908 S 1 0.5 0:06.20 httpd
2223 mysql 15 0 356m 62m 2504 S 0 3.1 0:36.55 mysqld
27087 apache 16 0 22976 9.8m 2904 S 0 0.5 0:02.74 httpd
27093 apache 15 0 22948 9.8m 2920 S 0 0.5 0:09.34 httpd
27106 apache 16 0 22920 9.8m 2908 S 0 0.5 0:04.59 httpd
27110 apache 16 0 22988 10m 2912 S 0 0.5 0:11.38 httpd
27142 apache 15 0 22964 9.8m 2912 S 0 0.5 0:11.12 httpd
27157 apache 15 0 22948 9.8m 2920 S 0 0.5 0:13.51 httpd
27451 apache 15 0 22976 9.8m 2908 S 0 0.5 0:04.85 httpd
27455 apache 16 0 22948 9.8m 2912 S 0 0.5 0:04.34 httpd
27457 apache 15 0 22948 9.8m 2916 S 0 0.5 0:08.15 httpd
27462 apache 15 0 22948 9.8m 2916 S 0 0.5 0:03.91 httpd
28490 apache 15 0 22948 9.8m 2916 S 0 0.5 0:04.94 httpd
28507 apache 16 0 22976 9.9m 2924 S 0 0.5 0:05.38 httpd
29694 root 16 0 2260 1124 780 R 0 0.1 0:00.26 top
1 root 16 0 1988 668 576 S 0 0.0 0:02.40 init
2 root RT 0 0 0 0 S 0 0.0 0:00.03 migration/0
3 root 34 19 0 0 0 S 0 0.0 0:00.00 ksoftirqd/0
4 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0
5 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/1
6 root 34 19 0 0 0 S 0 0.0 0:00.00 ksoftirqd/1
7 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1
8 root 10 -5 0 0 0 S 0 0.0 0:00.00 events/0
9 root 10 -5 0 0 0 S 0 0.0 0:00.00 events/1
10 root 10 -5 0 0 0 S 0 0.0 0:00.00 khelper
11 root 10 -5 0 0 0 S 0 0.0 0:00.00 kthread
14 root 10 -5 0 0 0 S 0 0.0 0:00.21 kblockd/0
15 root 10 -5 0 0 0 S 0 0.0 0:00.18 kblockd/1
16 root 14 -5 0 0 0 S 0 0.0 0:00.00 kacpid
90 root 10 -5 0 0 0 S 0 0.0 0:00.00 khubd
151 root 20 0 0 0 0 S 0 0.0 0:00.00 pdflush
152 root 15 0 0 0 0 S 0 0.0 0:00.20 pdflush
154 root 11 -5 0 0 0 S 0 0.0 0:00.00 aio/0
155 root 11 -5 0 0 0 S 0 0.0 0:00.00 aio/1


what are all this root processes?
normal?
thanks

 

[dan]

they're system processes. monitoring itself. watchdog. aio. etc, all system processes, and you'll probably find most linux/unix systems have a bunch of processes running as root with very low pid numbers. the /0 or /1 means that process is running on a particular processor (0 for cpu 1, 1 for cpu 2, etc.. dual core/dual cpu will show this).
linux, if you hit 1 (or f1) in top, at the top of the top screen, against cpu usage, it'll expand and show individual core/cpu usages.