Question concerning namei cache

From: Brewer, Edward \(NIH/OD\) <"Brewer,>
Date: Thu, 10 Apr 2003 14:27:40 -0400

Admins,

System is a GS160 Wildfire (8 processors) Tru64 5.1a patch kit 3

Currently I have been using monitor to provide me with a value for the
buffering to the namei cache. I decided to follow the procedures in the
System Configuration and Tuning for Tru64 5.1a. section 9.1.1 to verify.
Following the formula I get the namei buffer at a different value than
monitor.

With monitor it is listed as 87%, by hand I get 77% (which I performed twice
to be sure). I also did the calculation of ncs_goodhits/ncs_badtimehits
which should be less than .1 percent...mine was 3.8 %. From these
indications it looks like I need to do some exploring and tuning, What do
you think?

Raw Data

 ncs_goodhits = 76524644
    ncs_neghits = 6275430
    ncs_badhits = 202144
    ncs_falsehits = 95562
    ncs_miss = 23986482
    ncs_long = 895689
    ncs_badtimehits = 2959832
    ncs_collisions = 25643
    ncs_unequaldups = 23927
    ncs_newentry = 25093548
    ncs_newnegentry = 87703
    ncs_gnn_hit = 6204899
    ncs_gnn_miss = 5594
    ncs_gnn_badhits = 0
    ncs_gnn_collision = 32524
    ncs_pad = {
        [0] 0


Lee Brewer
Received on Thu Apr 10 2003 - 18:28:16 NZST

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