[comp.unix.questions] 4.3BSD fine tuning question

herber@bgsuvax.UUCP (09/17/87)

I have been watching my systems performance statistics lately while
the load on it has increased.  I have a VAX 785 w/10 Mb + 4 RA81's.

My question is.....   is it considered 'normal' for the system (SYS)
to consume a majority of the CPU usage.  In the example, which I consider
typical as of late, I see that the USER and NICE usage is far below
that of the SYS overhead.


   24 users    Load  5.98  5.64  4.94                  Thu Sep 17 10:50

Mem     REAL     VIRTUAL                    PAGING    SWAPING   Interrupts
      Tot Text   Tot Text   Free            in  out   in  out       251 total
Act  1968  619  2348  653   2550    count                           103 clock
All  5306 1380  8046 2974           pages    6                          cnr
                                                                        cnx
Discs  ra0  ra1  ra2  ra3           Rec It F/S F/F RFL Fre SFr          mba0
seeks                                 4                                 uba0
xfers   13    2         2                                            18 ud0
 blks   57   10    1    7                 35  zf            xf       60 dhr0
 msps                                     47 nzf         9 nxf        4 dhx0
                                       74.47 %zf           %xf          dm0
Procs  r  p  d  s  w                                                    dhr1
       5     1 19                                       93 Csw       11 dhx1
    V-----------------------------------------------|   50 Trp          dm1
  59.0% Sys  35.8% User   5.2% Nice   0.0% Idle     |  634 Sys       37 dhr2
|    |    |    |    |    |    |    |    |    |    | |  264 Int       12 dhx2
==============================>>>>>>>>>>>>>>>>>---  |      Pdm          dm2
                                                    |   24 Flt        2 dhr3
Namei         Sys-cache     Proc-cache              |      Scn        2 dhx3
    Calls     hits    %     hits     %              |      Rev          dm3
      200      167   84        2     1              |                 1 dhr4
Showing vmstat, refresh every 5 seconds.            |                 1
                                                    |
                                                    |
                                               **NOTICE**

In the past, I have noticed that the SYS has been, what I consider high,
at >30%.  Any opinions??????

Thanks in advance.


-- 

Steve Herber			CSNET herber@bgsu.edu
Sr. Systems Programmer		UUCP  ...!osu-cis!bgsuvax!herber
Bowling Green State Univ.