Re: [hobbit] Vmstat graph on redhat as 2.1 & 3

[thomas.seglard.enata (at) cnp.fr]

No, it's my own fault ! 
I do not give so much information in my mail. So I will try to give more 
here :

I'm using Hobbit 4.1.2p1 and my problem happens on Redhat AS 2.1 and 3. 
The problematic vmstat graphs are identified as vmstat and vmstat1.
I'm actually looking into the source code of hobbit and I found a file 
called hobbitd/rrd/do_vmstat.c
I paste some parts of the source code :

/* This one is all newer Linux procps versions, with kernel 2.4+ */
/* NOT compatible with LARRD 0.43c */
static vmstat_layout_t vmstat_linux_layout[] = {
        { 0, "cpu_r" },
        { 1, "cpu_b" },
        { -1, "cpu_w" },        /* Not present for 2.4+ kernels, so log as 
"Undefined" */
        { 2, "mem_swpd" },
        { 3, "mem_free" },
        { 4, "mem_buff" },
        { 5, "mem_cach" },
        { 6, "mem_si" },
        { 7, "mem_so" },
        { 8, "dsk_bi" },
        { 9, "dsk_bo" },
        { 10, "cpu_int" },
        { 11, "cpu_csw" },
        { 12, "cpu_usr" },
        { 13, "cpu_sys" },
        { 14, "cpu_idl" },
        { 15, "cpu_wait"  },    /* Requires kernel 2.6, but may not be 
present */
        { -1, NULL }
};

and here is my vmstat's output on redhat AS 2.1 (kernel 2.4.18-e.31smp)  :

 procs                      memory    swap          io     system cpu
 r  b  w   swpd   free   buff  cache  si  so    bi    bo   in    cs  us sy 
 id

Unlike comment I got a 'w' column... 
Now, I paste another part : 

/*
 * This one is for Red Hat Enterprise Linux 3. Identical to the "linux" 
layout,
 * except Red Hat for some reason decided to swap the cpu_wait and 
cpu_idle columns.
 */
/* NOT compatible with LARRD 0.43c */
static vmstat_layout_t vmstat_rhel3_layout[] = {
        { 0, "cpu_r" },
        { 1, "cpu_b" },
        { -1, "cpu_w" },
        { 2, "mem_swpd" },
        { 3, "mem_free" },
        { 4, "mem_buff" },
        { 5, "mem_cach" },
        { 6, "mem_si" },
        { 7, "mem_so" },
        { 8, "dsk_bi" },
        { 9, "dsk_bo" },
        { 10, "cpu_int" },
        { 11, "cpu_csw" },
        { 12, "cpu_usr" },
        { 13, "cpu_sys" },
        { 14, "cpu_wait" },
        { 15, "cpu_idl"  },
        { -1, NULL }
} ;

and my vmstat's output from a redhat AS 3 :

procs                      memory      swap          io     system cpu
 r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy 
wa id

This time, order is correct but my not my graphs !! Hobbit considers this 
version of redhat like a normal linux box and not a rhel3.
So, how Hobbit does recognize the os ? Indeed, my redhat AS 2.1 and 3 are 
recognized as a linux not a rhel3...
I'm putting here the corresponding fields : 

RH 2.1
vmstat's output hobbit's graph
idle            cpu_wait
sys             cpu_idl
usr             cpu_sys
cs              cpu_usr

RH3
vmstat's output hobbit's graph
idle            cpu_wait
iowait          cup_idl
sys             cpu_sys
usr             cpu_usr

How could I fix that ? May I add new structures in the do_vmstat.c called 
linux_rhas21 and linux_rhas3 or something ? As I say before there is no 
problem on redhat AS 4. 
Thanks for your help !

Thomas



> 
> Oh,
> my mistake. You are using hobbit and I use the "old BB".
> Hobbit has a "build in" LA/RRD-engine and because of that you don't have 

> the vmstat-larrd.pl script.
> Sorry but I'm not able to give you an advice on how to handle this...
> 
> johann
> 
> To unsubscribe from the hobbit list, send an e-mail to
> hobbit-unsubscribe (at) hswn.dk
> 
> 


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