Solaris Internals: Solaris 10 and OpenSolaris Kernel Architecture (2nd Edition)

16.9. MPO Statistics

The exports kstats from the "lgrp" module of the MPO framework are shown in Table 16.1.

Table 16.1. MPO Lgroup Statistics

Statistic

Description

lwp migrations

# migrations away from this lgrp

alloc fail

# times alloc fails for chosen lgrp

pages migrated from

# pages migrated from this lgrp

pages migrated to

# pages migrated to this lgrp

pages failed to migrate to

# pages failed to migrate to this lgrp

pages failed to migrate from

# pages failed to migrate from this lgrp

pages marked for migration

# pages marked to migrate from this lgrp

pages failed to mark

# pages marked to migrate from this lgrp

default policy

# of times default policy applied

next-touch policy

# of times next touch policy applied

random policy

# of times random policy applied

span process policy

# of times random proc policy applied

span psrset policy

# of times random pset policy applied

round robin policy

# of times round robin policy applied

The statistics can be accessed through the kstat interfaces.

sol9# kstat lgrp module: lgrp instance: 1 name: lgrp1 class: misc alloc fail 278218728 cpus 4 crtime 291.87058224 default policy 0 load average 72495 lwp migrations 0 next-touch policy 689363494 pages avail 2097152 pages failed to mark 0 pages failed to migrate from 0 pages failed to migrate to 0 pages free 1778727 pages installed 2097152 pages marked for migration 0 pages migrated from 0 pages migrated to 0 random policy 12575460 round robin policy 0 snaptime 678923.87893152 span process policy 0 span psrset policy 0

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