[HADOOP-7832] Using mincore to understand the effect of fadvise in the Linux page cache

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Done
• Component/s: io, native, performance
• Assignee: Cristina L. Abad
• Reporter: Cristina L. Abad
• Created: 17/Nov/11 20:33
• Updated: 13/Feb/15 20:36
• Resolved: 13/Feb/15 20:36

Description

This Jira adds a way to log the percentage of pages of a file that were on the Linux page cache (when the file is being opened) with the purpose of measuring the effect of issuing posix_fadvise (POSIX_FADV_DONTNEED) calls.