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Date:      Sat, 12 Feb 2011 00:21:29 +0000
From:      Alexander Best <arundel@freebsd.org>
To:        freebsd-questions@freebsd.org
Subject:   deciphering top(1) output
Message-ID:  <20110212002129.GA95360@freebsd.org>

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hi there,

i'm trying to decipher the following top(1) output:

otaku% top -PSHb -d2 
last pid: 14206;  load averages:  0.02,  0.04,  0.00  up 1+02:08:58    01:13:21
256 processes: 3 running, 238 sleeping, 15 waiting

Mem: 1356M Active, 141M Inact, 342M Wired, 79M Cache, 212M Buf, 44M Free
Swap: 18G Total, 692M Used, 17G Free, 3% Inuse



  PID USERNAME   PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND                                                                                                                                                                                                                                                                                                                                                                                                                                                         
   10 root       155 ki31     0K    32K RUN     1  21.9H 100.00% {idle: cpu1}
   10 root       155 ki31     0K    32K CPU0    0  21.6H 97.85% {idle: cpu0}
 4451 arundel     21    0   913M   179M uwait   0  28:35  0.00% {chrome}
 4446 arundel     20    0   836M 60040K uwait   0  26:26  0.00% {chrome}
 4476 arundel     21    0   854M   100M uwait   0  24:52  0.00% {chrome}
 4448 arundel     22    0   866M   109M uwait   0  23:57  0.00% {chrome}
 4474 arundel     21    0   840M 70796K uwait   0  23:29  0.00% {chrome}
 4475 arundel     20    0   827M 81872K uwait   0  22:37  0.00% {chrome}
 4471 arundel     20    0   822M 61652K uwait   0  21:55  0.00% {chrome}
 4442 arundel     21    0   824M 62872K uwait   0  21:46  0.00% {chrome}
 4447 arundel     21    0   815M 61420K uwait   0  21:32  0.00% {chrome}
 4450 arundel     21    0   809M 60240K uwait   0  21:21  0.00% {chrome}
 2007 arundel     20    0   880M 12780K select  1  20:39  0.00% Xorg
 4452 arundel     20    0   205M 30016K select  0  12:58  0.00% {initial thread}
 4414 arundel     20    0   334M 96560K kqread  1  11:00  0.00% {chrome}
 4414 arundel     20    0   334M 96560K select  1   9:40  0.00% {initial thread}
 4472 arundel     20    0  1111M   530M futex   1   8:21  0.00% npviewer.bin
   11 root       -96    -     0K   240K WAIT    0   7:57  0.00% {irq16: vgapci0+}

last pid: 14206;  load averages:  0.02,  0.04,  0.00  up 1+02:09:00    01:13:23
256 processes: 4 running, 238 sleeping, 14 waiting
CPU 0:  8.7% user,  0.0% nice,  4.3% system,  0.4% interrupt, 86.6% idle
CPU 1:  7.1% user,  0.0% nice,  3.5% system,  0.0% interrupt, 89.4% idle
Mem: 1358M Active, 141M Inact, 342M Wired, 79M Cache, 212M Buf, 42M Free
Swap: 18G Total, 692M Used, 17G Free, 3% Inuse

  PID USERNAME   PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND                                                                                                                                                                                                                                                                                                                                                                                                                                                         
   10 root       155 ki31     0K    32K RUN     1  21.9H 100.00% {idle: cpu1}
   10 root       155 ki31     0K    32K CPU0    0  21.6H 98.00% {idle: cpu0}
 4451 arundel     21    0   913M   179M uwait   0  28:35  0.00% {chrome}
 4446 arundel     20    0   836M 60292K uwait   0  26:26  0.00% {chrome}
 4476 arundel     21    0   854M   101M uwait   0  24:52  0.00% {chrome}
 4448 arundel     21    0   866M   109M uwait   0  23:57  0.00% {chrome}
 4474 arundel     20    0   840M 71492K uwait   1  23:29  0.00% {chrome}
 4475 arundel     20    0   827M 81876K uwait   1  22:38  0.00% {chrome}
 4471 arundel     21    0   822M 61652K uwait   0  21:55  0.00% {chrome}
 4442 arundel     21    0   824M 62872K uwait   0  21:46  0.00% {chrome}
 4447 arundel     21    0   815M 61420K uwait   1  21:32  0.00% {chrome}
 4450 arundel     21    0   809M 60240K uwait   0  21:21  0.00% {chrome}
 2007 arundel     20    0   880M 12780K select  1  20:39  0.00% Xorg
 4452 arundel     20    0   205M 30016K select  0  12:58  0.00% {initial thread}
 4414 arundel     20    0   334M 96560K kqread  0  11:00  0.00% {chrome}
 4414 arundel     20    0   334M 96560K select  0   9:40  0.00% {initial thread}
 4472 arundel     20    0  1111M   530M futex   1   8:21  0.00% npviewer.bin
   11 root       -96    -     0K   240K WAIT    0   7:57  0.00% {irq16: vgapci0+}


does this mean that

a) my system is 100% idle, since no processes except the idle process takes up
   up CPU time or
b) that a or some processes take up 2% CPU time which aren't being shown or
c) that each of my cpu core is only 86.6/89.4% idle?

cheers.
alex

-- 
a13x



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