Re: Process Resource Update

[Martin Pala]

Christian Hopp wrote:
> On Mon, 2 Aug 2004, Christian Hopp wrote:
>
>
> > On Sat, 31 Jul 2004, Martin Pala wrote:
>
>
> > > --8<--
> > >   pt = xcalloc(sizeof(ProcessTree_T), treesize);
> > >   memset(pt, 0, sizeof(ProcessTree_T) * treesize);
> > > --8<--
> >
> > Gonna remove it... mmmhhh... I should spend even more time reading
> > man-pages. (:
>
>
> Fixed... and I read the man page (:
>
>
> > > 2.) it seems that the process related stuff needs to be fixed on Darwin
> > > and OpenBSD...
> >
> > Because IMO it won't work with the code... and a *BSD guy has to look over
> > it.
>
>
> Tnx for helping me out with that job, Rory!
>
>
>
> Okay, this patch has to be applied to the most recent CVS.  But please ppl
> whether no more changes to the affected files or I have to commit it
> soon.

Sorry for the changes ;)


I have tried the patch on linux, it seems that the memory usage numbers 
differs from what the system says about the process. For exmple slapd 
process:

1.) System reports:
unicorn:~/cvs/monit-proc# ps -ef | grep slapd
root      7011     1  0 23:15 ?        00:00:00 /usr/sbin/slapd

unicorn:~/cvs/monit-proc# pstree 7011
slapd

unicorn:~/cvs/monit-proc# more /proc/7011/statm
3826 670 1369 108 0 3718 0
/*
Provides information about memory status in pages.  The columns are:
size       total program size
resident   resident set size
share      shared pages
trs        text (code)
drs        data/stack
lrs        library
dt         dirty pages
*/

unicorn:~# ps -o pid,vsize,sz,rss,dsiz,trs,pmem -p 7011
  PID   VSZ    SZ  RSS DSIZ  TRS %MEM
 7011 15304  3826 2680 14880 423  0.5


2.) Monit reports:
Parameter               Value
-----------------------------
Name                    slapd
Process id              7011
Process status          running
Pid file                /var/run/slapd.pid
...
Process uptime          39m
CPU usage               0.0%
Memory usage            1.8% [9828kB]
Children                0
Total memory usage (incl. children)     1.8% [9828kB]


It is possible that it is correct, i have not looked to the code what 
exactly means the result from monit.

> And for those who are interested I have added an experimental method to
> gather (but not yet monitor!) the used main memory and total CPU load.  It
> is currently stored in...
>
>       Run.total_mem_kbyte
>       Run.total_mem_percent
>       Run.total_cpu_percent
>
> ... so feel free to play around with it and tell me if it results make
> sense.

The result of global cpu and memory load looks good :) Only the 
Run.total_mem_kbyte parameter seems to differ from what other system 
tools reports.

1.)
top reports:
top - 00:28:02 up  1:36,  1 user,  load average: 0.05, 0.10, 0.12
Tasks:   1 total,   0 running,   1 sleeping,   0 stopped,   0 zombie
Cpu(s):  5.6% us,  2.0% sy,  0.0% ni, 92.0% id,  0.0% wa,  0.0% hi,  0.3% si
Mem:    517268k total,   231368k used,   285900k free,    17228k buffers
Swap:  1052216k total,        0k used,  1052216k free,   114344k cached
 0      0 289036  15644 113960   0   0    0   16 1102 476  4  1 95  0

vmstat reports:
unicorn:~/cvs/monit-proc# vmstat 5
procs--memory----------------------swap-------io--system--cpu----
r  b   swpd   free   buff  cache   si   so    bi  bo  in  cs us sy id wa
0  0   0 285068  17812 114724    0    0     0   62 1082  338  1  1 98  0
0  0   0 285068  17820 114724    0    0     0   15 1102  388  1  1 98  0
0  0   0 285068  17820 114724    0    0     0    0 1207  586  4  2 94  0


3.) monit reports (debug output for global values added):
[CEST Aug  4 00:27:49]  Run.total_mem_kbyte = 183712
[CEST Aug  4 00:27:49]  Run.total_mem_percent= 35.5%
[CEST Aug  4 00:27:49]  Run.total_cpu_percent= 3.9%
-
[CEST Aug  4 00:27:55]  Run.total_mem_kbyte = 183712
[CEST Aug  4 00:27:55]  Run.total_mem_percent= 35.5%
[CEST Aug  4 00:27:55]  Run.total_cpu_percent= 5.8%
-
[CEST Aug  4 00:28:00]  Run.total_mem_kbyte = 183712
[CEST Aug  4 00:28:00]  Run.total_mem_percent= 35.5%
[CEST Aug  4 00:28:00]  Run.total_cpu_percent= 5.8%
-
[CEST Aug  4 00:28:05]  Run.total_mem_kbyte = 183496
[CEST Aug  4 00:28:05]  Run.total_mem_percent= 35.4%
[CEST Aug  4 00:28:05]  Run.total_cpu_percent= 7.6%