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Name	Size	Permission
glibc-malloc.meta	381 B	-rw-r--r--
glibc-malloc.stp	2.43 KB	-rw-r--r--
hugepage_clear_delays.meta	946 B	-rw-r--r--
hugepage_clear_delays.stp	483 B	-rwxr-xr-x
hugepage_collapse.meta	718 B	-rw-r--r--
hugepage_collapse.stp	159 B	-rwxr-xr-x
hugepage_cow_delays.meta	1.08 KB	-rw-r--r--
hugepage_cow_delays.stp	475 B	-rwxr-xr-x
hugepage_split.meta	756 B	-rw-r--r--
hugepage_split.stp	153 B	-rwxr-xr-x
hw_watch_addr.meta	787 B	-rw-r--r--
hw_watch_addr.stp	167 B	-rwxr-xr-x
hw_watch_addr.tcl	97 B	-rw-r--r--
hw_watch_sym.meta	715 B	-rw-r--r--
hw_watch_sym.stp	167 B	-rwxr-xr-x
hw_watch_sym.tcl	97 B	-rw-r--r--
kmalloc-top	3.8 KB	-rwxr-xr-x
kmalloc-top.meta	695 B	-rw-r--r--
last_100_frees.meta	420 B	-rw-r--r--
last_100_frees.stp	803 B	-rwxr-xr-x
last_100_frees.tcl	79 B	-rw-r--r--
last_100_frees.txt	774 B	-rw-r--r--
mmanonpage.meta	1.2 KB	-rw-r--r--
mmanonpage.stp	1.77 KB	-rwxr-xr-x
mmfilepage.meta	929 B	-rw-r--r--
mmfilepage.stp	3.47 KB	-rwxr-xr-x
mmreclaim.meta	606 B	-rw-r--r--
mmreclaim.stp	5.11 KB	-rwxr-xr-x
mmwriteback.meta	1008 B	-rw-r--r--
mmwriteback.stp	1.92 KB	-rwxr-xr-x
numa_faults.meta	702 B	-rw-r--r--
numa_faults.stp	973 B	-rwxr-xr-x
numa_faults.txt	1.67 KB	-rw-r--r--
overcommit.meta	484 B	-rw-r--r--
overcommit.stp	217 B	-rwxr-xr-x
pfaults.meta	744 B	-rw-r--r--
pfaults.stp	875 B	-rwxr-xr-x
pfaults.txt	558 B	-rw-r--r--
vm.tracepoints.meta	608 B	-rw-r--r--
vm.tracepoints.stp	414 B	-rwxr-xr-x
vm.tracepoints.txt	557 B	-rw-r--r--

Code Editor : mmfilepage.stp

#!/usr/bin/stap
#
# Note that there are 2 sets of filemap kernel tracepoints:
#
# - older kernels RHEL5 (2.6.18) - RHEL6 (2.6.32): mm_filemap_fault,
#   mm_filemap_cow, mm_filemap_unmap mm_filemap_userunmap
# - newer kernels: mm_filemap_add_to_page_cache,
#   mm_filemap_delete_from_page_cache
#
# This script attempts to handle them both.

global traced_pid, command
global allocation, free

global old_set_hits
global file_fault, file_cow, file_uunmap, file_kunmap
global file_page_cache_add, file_page_cache_delete

function log_event:long ()
{
  return (!traced_pid || traced_pid == pid())
}

probe kernel.{trace("mm_page_alloc")!, trace("mm_page_allocation")} {
  if (!log_event()) next
  allocation[pid()] <<< 1
  command[pid()] = execname()
}

probe kernel.{trace("mm_page_free")!, trace("mm_page_free_direct")} {
  if (!log_event()) next
  free[pid()] <<< 1
}

probe kernel.trace("mm_filemap_fault")? {
  if (!log_event()) next
  old_set_hits <<< 1
  file_fault[pid()] <<< 1
}

probe kernel.trace("mm_filemap_cow")? {
  if (!log_event()) next
  old_set_hits <<< 1
  file_cow[pid()] <<< 1
}

probe kernel.trace("mm_filemap_unmap")? {
  if (!log_event()) next
  old_set_hits <<< 1
  file_kunmap[pid()] <<< 1
}

probe kernel.trace("mm_filemap_userunmap")? {
  if (!log_event()) next
  old_set_hits <<< 1
  file_uunmap[pid()] <<< 1
}

probe kernel.trace("mm_filemap_add_to_page_cache")? {
  if (!log_event()) next
  file_page_cache_add[pid()] <<< 1
}

probe kernel.trace("mm_filemap_delete_from_page_cache")? {
  if (!log_event()) next
  file_page_cache_delete[pid()] <<< 1
}

probe never {
  # Do a few initializations to let stap know what the global
  # variable types are. Note that since we're in a "never"
  # probe, these initializations will never actually happen.
  traced_pid = 0
  old_set_hits <<< 1
  file_fault[0] <<< 1
  file_cow[0] <<< 1
  file_uunmap[0] <<< 1
  file_kunmap[0] <<< 1
  file_page_cache_add[0] <<< 1
  file_page_cache_delete[0] <<< 1
}

probe begin {
  printf("Starting data collection\n")
  if (target())
    printf("mode Specific Pid, traced pid: %d\n\n", target())
  else
    printf("mode - All Pids\n\n")
}

probe end {
  printf("Terminating data collection\n")

# We'll either have hits from the old set of filemap tracepoints
  # (mm_filemap_fault, mm_filemap_cow, mm_filemap_unmap,
  # mm_filemap_userunmap) or the new set of filemap tracepoints
  # (mm_filemap_add_to_page_cache,
  # mm_filemap_delete_from_page_cache). Print out the set that got
  # hits. 
  if (@count(old_set_hits)) {
    printf("%-16s %6s %9s %9s %8s %8s %8s %8s\n",
	   "Command", "Pid", "Alloc", "Free",
	   "F_fault", "F_cow", "F_kunmap", "F_uunmap")
    printf("%-16s %6s %9s %9s %8s %8s %8s %8s\n",
	   "-------", "---", "-----", "----",
	   "-------", "-----", "--------", "--------")
  }
  else {
    printf("%-16s %6s %9s %9s %8s %8s\n",
	   "Command", "Pid", "Alloc", "Free", "CacheAdd", "CacheDel")
    printf("%-16s %6s %9s %9s %8s %8s\n",
	   "-------", "---", "-----", "----", "--------", "--------")
  }

foreach (pid in allocation-) {
    if (@count(old_set_hits))
      printf("%-16s %6d %9d %9d %8d %8d %8d %8d\n",
	     command[pid], pid,
	     @count(allocation[pid]), @count(free[pid]),
	     @count(file_fault[pid]), @count(file_cow[pid]),
	     @count(file_kunmap[pid]), @count(file_uunmap[pid]))
    else
      printf("%-16s %6d %9d %9d %8d %8d\n",
	     command[pid], pid,
	     @count(allocation[pid]), @count(free[pid]),
	     @count(file_page_cache_add[pid]),
	     @count(file_page_cache_delete[pid]))
  }
}

${this.title}

Code Editor : mmfilepage.stp