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title: Track Virtual Memory System Page Reclamation
name: mmreclaim.stp
version: 1.0
author: Red Hat
keywords: memory
subsystem: memory
status: experimental
exit: user-controlled
output: sorted-list
scope: system-wide
description: The mmreclaim.stp script uses the virtual memory tracepoints available in some kernels to track page reclaim activity that occurred while the script was running. It's useful in debugging performance problems that occur due to page reclamation.
test_support: stap -l 'kernel.trace("mm_directreclaim_reclaimall")' && stap -l 'kernel.trace("mm_pagereclaim_shrinkinactive")' && stap -l 'kernel.trace("mm_pagereclaim_free")' && stap -l 'kernel.trace("mm_pagereclaim_pgout")' && stap -l 'kernel.trace("mm_pagereclaim_shrinkactive_a2a")' && stap -l 'kernel.trace("mm_pagereclaim_shrinkinactive_i2a")' && stap -l 'kernel.trace("mm_pagereclaim_shrinkactive_a2i")' && stap -l 'kernel.trace("mm_pagereclaim_shrinkinactive_i2i")'
test_check: stap -p4 mmreclaim.stp
test_installcheck: stap mmreclaim.stp -c "sleep 0.2"