add psi-top

nohang.conf

@@ -325,7 +325,9 @@ print_proc_table = False
 
 extra_table_info = cgroup_v1
 
-print_victim_info = True
+print_victim_info = False
+
+    # print_victim_cmdline
 
 max_ancestry_depth = 1
 

trash/memleak/memleak

@@ -6,7 +6,7 @@ from time import sleep
 x = []
 
 while True:
-    x.append('#' * 9999999)
+    x.append('#' * 99999)
     sleep(0.1)
-    system('sleep 99 &')
+    system('sleep 9999 &')
 

trash/psi-top

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+
+from ctypes import CDLL
+from time import sleep
+
+"""
+    Execute the command
+    find /sys/fs/cgroup -name memory.pressure
+    to find available memory.pressue files (except /proc/pressure/memory).
+    (actual for cgroup2)
+"""
+
+psi_path = '/proc/pressure/memory'
+
+
+def mlockall():
+
+    MCL_CURRENT = 1
+    MCL_FUTURE = 2
+    MCL_ONFAULT = 4
+
+    libc = CDLL('libc.so.6', use_errno=True)
+
+    result = libc.mlockall(
+        MCL_CURRENT | MCL_FUTURE | MCL_ONFAULT
+    )
+    if result != 0:
+        result = libc.mlockall(
+            MCL_CURRENT | MCL_FUTURE
+        )
+        if result != 0:
+            print('WARNING: cannot lock all memory')
+        else:
+            pass
+    else:
+        pass
+
+
+mlockall()
+
+
+def psi_path_to_metrics(psi_path):
+
+    with open(psi_path) as f:
+        psi_list = f.readlines()
+    # print(psi_list)
+    some_list, full_list = psi_list[0].split(' '), psi_list[1].split(' ')
+    #print(some_list, full_list)
+    some_avg10 = some_list[1].split('=')[1]
+    some_avg60 = some_list[2].split('=')[1]
+    some_avg300 = some_list[3].split('=')[1]
+
+    full_avg10 = full_list[1].split('=')[1]
+    full_avg60 = full_list[1].split('=')[1]
+    full_avg300 = full_list[1].split('=')[1]
+
+    return (some_avg10, some_avg60, some_avg300,
+            full_avg10, full_avg60, full_avg300)
+
+
+print('Path to PSI file: {}\n'.format(psi_path))
+
+
+print('      avg10  avg60 avg300         avg10  avg60 avg300')
+
+while True:
+    (some_avg10, some_avg60, some_avg300,
+     full_avg10, full_avg60, full_avg300) = psi_path_to_metrics(psi_path)
+
+    print('some {} {} {} | full {} {} {}'.format(
+        some_avg10.rjust(6),
+        some_avg60.rjust(6),
+        some_avg300.rjust(6),
+        full_avg10.rjust(6),
+        full_avg60.rjust(6),
+        full_avg300.rjust(6)))
+
+    sleep(2)