possible BUG#22320 removed because it does not help.

storage/maria/unittest/ma_pagecache_consist.c

@@ -470,18 +470,8 @@ int main(int argc __attribute__((unused)),
   pthread_mutex_lock(&LOCK_thread_count);
   while (thread_count)
   {
-    /*
-      workaround until we know why it crashes randomly on some machine
-      (BUG#22320).
-    */
-    sleep(1);
     if ((error= pthread_cond_wait(&COND_thread_count,&LOCK_thread_count)))
       diag("COND_thread_count: %d from pthread_cond_wait\n",error);
-    /*
-      workaround until we know why it crashes randomly on some machine
-      (BUG#22320).
-    */
-    sleep(1);
   }
   pthread_mutex_unlock(&LOCK_thread_count);
   DBUG_PRINT("info", ("thread ended"));
@@ -497,12 +487,6 @@ int main(int argc __attribute__((unused)),
   }
   my_delete(file1_name, MYF(0));
 
-  /*
-    workaround until we know why it crashes randomly on some machine
-    (BUG#22320).
-  */
-  sleep(2);
-
   DBUG_PRINT("info", ("file1 (%d) closed", file1.file));
   DBUG_PRINT("info", ("Program end"));
 

storage/maria/unittest/ma_pagecache_rwconsist.c

@@ -354,11 +354,6 @@ int main(int argc __attribute__((unused)),
 
   DBUG_PRINT("info", ("file1 (%d) closed", file1.file));
   DBUG_PRINT("info", ("Program end"));
-  /*
-    workaround until we know why it crashes randomly on some machine
-    (BUG#22320).
-  */
-  sleep(2);
   } /* SKIP_BIG_TESTS */
   my_end(0);