IBM
C9010-022 · Question #155
C9010-022 Question #155: Real Exam Question with Answer & Explanation
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Question
A system with multiple applications is experiencing bursts of activity. This drives the free pages list very low, resulting in increased wait times for applications. Given the vmstat output below, what can be done to increase the number of free pages to compensate for these bursts of activity?
db2serv2: /# vmstat -v
vmstat -v
33554432 memory pages
32552800 lruable pages
106 free pages
1 memory pools
2507104 pinned pages
90.0 maxpin percentage
76.0 minperm percentage
95.0 maxperm percentage
10.0 numperm percentage
3520502 file pages
0.0 compressed percentage
0 compressed pages
10.0 numclient percentage
95.0 maxclient percentage
3512039 client pages
0 remote pageouts scheduled
18 pending disk I/Os blocked with no pbuf
0 paging space I/Os blocked with no pbuf
2007 filesystem I/Os blocked with no fsbuf
59 client filesystem I/Os blocked with no fsbuf
0 external pager filesystem I/Os blocked with no fsbuf
8.0 percentage of memory used for computational pages
Options
- AIncrease the maxpin tunable.
- BIncrease the page space size.
- CIncrease the lru_file_repage setting.
- DIncrease the minfree and maxfree tunables
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