Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

Open Menu /external/cddl/dtracetoolkit/dist/Examples/rwtop_example.txt 
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
The following is a demonstration of the rwtop program,


By default it will refresh the screen every 5 seconds,

   # rwtop
   2005 Jul 24 01:00:43,  load: 1.02,  app_r:      8 KB,  app_w:     19 KB
   
     UID    PID   PPID CMD              D            BYTES
       0  20320  20347 bash             R               10
       0  20320  20347 bash             W               95
     100  20317  20314 sshd             R              650
     100  20317  20314 sshd             W              733
       0   2365  20320 ls               W             1300
       0   2364  20320 vi               R             2323
       0   2365  20320 ls               R             2485
     100  20334  20331 sshd             R             3010
     100  20334  20331 sshd             W             3729
       0   2364  20320 vi               W            14128

In the above output, we can see that a "vi" process wrote 14 Kbytes and
read 2 Kbytes. 



In the following example, we print the top 5 processes in a scrolling
output by using "-C" to not clear the screen,

   # rwtop -C -t5
   Tracing... Please wait.
   2005 Jul 24 01:03:27,  load: 1.05,  app_r:    261 KB,  app_w:    348 KB
   
     UID    PID   PPID CMD              D            BYTES
       0   2381  20320 svcs             W             5801
       0      9      1 svc.configd      R           115712
       0   2380  20320 find             W           140003
     100  20334  20331 sshd             R           150740
     100  20334  20331 sshd             W           210773
   
   2005 Jul 24 01:03:32,  load: 1.07,  app_r:    110 KB,  app_w:    233 KB
   
     UID    PID   PPID CMD              D            BYTES
     100  20317  20314 sshd             R              419
     100  20317  20314 sshd             W              468
       0   2382  20320 find             W           110720
     100  20334  20331 sshd             R           112835
     100  20334  20331 sshd             W           128175
   
   2005 Jul 24 01:03:37,  load: 1.07,  app_r:      6 KB,  app_w:      7 KB
   
     UID    PID   PPID CMD              D            BYTES
       0   2383  20320 df               W             1154
       0   2385  20320 ls               W             1300
       0   2385  20320 ls               R             2485
     100  20334  20331 sshd             R             3929
     100  20334  20331 sshd             W             4339
   
   ^C