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Date:      Wed, 6 Nov 1996 11:23:59 +0800
From:      Khoo Swee Chuan <sckhoo@gandalf>
To:        freebsd-questions@FreeBSD.org
Subject:   vmstat
Message-ID:  <199611060323.LAA23429@gandalf>

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hi,

	Just a  short question, i am running vmstat on my dns
checking why the response of the server is bad, vmstat is runing
every 10 seconds and this is what i see

 procs   memory     page                    disks   faults      cpu
 r b w   avm   fre  flt  re  pi  po  fr  sr f0 w0   in   sy  cs us sy id
 0 2 0 38508   552   79  25  47   8  13 3508  0 51 1038  342  56  1 20 80
 0 2 0 38412  1192   83  35  43  12   9 3580  0 52 1026  341  55  1 18 81
 0 2 0 34240   812   67  14  44   6  10 1422  0 49 1089  481  51  3 18 79
 0 0 0 38412   556   17   3  11   0   3 161  0 12  440  423  23  2  6 92
 0 0 0 38412   352    3   0   2   0   2   0  0  2  275  309  10  1  2 98
 0 2 0 42680   432    8   0   4   0   5 288  0  5  332  438  22  1  4 95
 0 0 0 42680   176    3   0   3   0   1   0  0  3  297  303   9  1  2 98

when disk activity went up to around 50, the responses to nslookup enquiries
went down. And i found out that page fault went up the same time as disk
activities. 

May i know what page fault actually do and how do i tune the system to
reduce that? 

DNS is running on P75 FreeBSD 2.1.0 16MB on ep0 with IDE drive.

I have a plan to upgrade to P133 with SCSI drive with 32MB.

Thanx.

rgds,
sc khoo



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