Bug #22657 No statistics available on DiskPageBufferMemory
Submitted: 25 Sep 2006 9:13 Modified: 18 Dec 2008 21:14
Reporter: Johan Andersson Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Cluster: Disk Data Severity:S4 (Feature request)
Version:mysql-5.1 OS:Any (*)
Assigned to: CPU Architecture:Any

[25 Sep 2006 9:13] Johan Andersson 
Description:
Provide statistics on DiskPageBufferMemory utilization.
It would be very good to see:
Hit rate
# of Used pages
# of Free pages
# of Dirty pages
# of Total pages

Avg cost going out to disk
Max cost going out to disk
Mean cost going out to disk

With disk cost we can figure out how much the disk adds to the query cost.

How to repeat:
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Suggested fix:
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