Bug #62675 innodb_lru_scan_depth needs a description
Submitted: 11 Oct 2011 0:39 Modified: 26 Nov 2011 16:14
Reporter: Mark Callaghan Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Documentation Severity:S3 (Non-critical)
Version:5.6.3 OS:Any
Assigned to: John Russell CPU Architecture:Any

[11 Oct 2011 0:39] Mark Callaghan 
Description:
This has no description:
http://dev.mysql.com/doc/refman/5.6/en/innodb-parameters.html#sysvar_innodb_lru_scan_depth

How to repeat:
read the docs

Suggested fix:
read the docs
[11 Oct 2011 3:53] Valeriy Kravchuk 
Thank you for the bug report.
[26 Nov 2011 16:14] John Russell 
Description added to the documentation:

A parameter that influences the algorithms and heuristics for the flush operation for the InnoDB buffer pool. Primarily of interest to performance experts tuning I/O-intensive workloads. It specifies how far down the buffer pool LRU list the page_cleaner thread scans looking for dirty pages to flush. This is a background operation performed once a second. If you have spare I/O capacity under a typical workload, increase the value. If a write-intensive workload saturates your I/O capacity, decrease the value, especially if you have a large buffer pool.