Chapter 5. Memory Tapset

Table of Contents

vm_fault_contains — Test return value for page fault reason
vm.pagefault — Records that a page fault occurred.
vm.pagefault.return — Indicates what type of fault occurred.
addr_to_node — Returns which node a given address belongs to within a NUMA system.
vm.write_shared — Attempts at writing to a shared page.
vm.write_shared_copy — Page copy for shared page write.
vm.mmap — Fires when an mmap is requested.
vm.munmap — Fires when an munmap is requested.
vm.brk — Fires when a brk is requested (i.e. the heap will be resized).
vm.oom_kill — Fires when a thread is selected for termination by the OOM killer.
vm.kmalloc — Fires when kmalloc is requested.
vm.kmem_cache_alloc — Fires when \
vm.kmalloc_node — Fires when kmalloc_node is requested.
vm.kmem_cache_alloc_node — Fires when \
vm.kfree — Fires when kfree is requested.
vm.kmem_cache_free — Fires when \
proc_mem_size — Total program virtual memory size in pages.
proc_mem_rss — Program resident set size in pages.
proc_mem_shr — Program shared pages (from shared mappings).
proc_mem_txt — Program text (code) size in pages.
proc_mem_data — Program data size (data + stack) in pages.
mem_page_size — Number of bytes in a page for this architecture.
bytes_to_string — Human readable string for given bytes.
pages_to_string — Turns pages into a human readable string.
proc_mem_string — Human readable string of current proc memory usage.

This family of probe points is used to probe memory-related events or query the memory usage of the current process. It contains the following probe points: