Column DLNC Miss

Source /usr/bin/sar -a

Description
The directory name lookup cache can be calculated by
dnlc.hitrate = 100* (namei - iget)/namei

If we have an alarm condition, it means the directory name lookup cache is too small and a lot of inodes are being read.

DNLC Miss AMBER : dnlc.hitrate < 90% && namei > 50

DNLC ok GREEN : dnlc.hitrate >=90%

Caveats

srtdate_sar-a: 20041027110423	SGT "sar -a 15 4"

SunOS sr-csin05-04 5.9 Generic_117171-02 sun4u    10/27/2004

11:03:09  iget/s namei/s dirbk/s
11:03:24      21    7294      12
11:03:39       6    1699       5
11:03:54       0    1231       0
11:04:09       7    3888       1

Average        9    3527       5
enddate_sar-a: 20041027110423	SGT

Column	DLNC Miss
Source	/usr/bin/sar -a
Description	The directory name lookup cache can be calculated by dnlc.hitrate = 100* (namei - iget)/namei If we have an alarm condition, it means the directory name lookup cache is too small and a lot of inodes are being read. DNLC Miss AMBER : dnlc.hitrate < 90% && namei > 50 DNLC ok GREEN : dnlc.hitrate >=90%
Caveats

srtdate_sar-a: 20041027110423 SGT "sar -a 15 4" SunOS sr-csin05-04 5.9 Generic_117171-02 sun4u 10/27/2004 11:03:09 iget/s namei/s dirbk/s 11:03:24 21 7294 12 11:03:39 6 1699 5 11:03:54 0 1231 0 11:04:09 7 3888 1 Average 9 3527 5 enddate_sar-a: 20041027110423 SGT