Re: high load avg

["Leon Keijser" <errtu@xxxxxxx>]

Hi Luca,

> if you are using Kernel 2.6.x (with x >11) then read the thread
> started by me some time ago on this list

Thanks for the pointer. It didn't patch against 2.6.13 though, but i noticed
it was only changing occurrences of ssleep(); with 2 other lines. Four times
in a row in that file, starting around 73% i believe.

Aaanyway, kernel patched & rebooted. Load avg is now pretty normal again :)

Modified patch for 2.6.13:

--- a/net/ipv4/ipvs/ip_vs_sync.c   2005-11-03 13:55:15.000000000 +0100
+++ b/net/ipv4/ipvs/ip_vs_sync.c   2005-11-03 14:03:03.000000000 +0100
@@ -655,7 +655,8 @@
                if (stop_master_sync)
                        break;

-               ssleep(1);
+               __set_current_state(TASK_INTERRUPTIBLE);
+               schedule_timeout(HZ);
        }

        /* clean up the sync_buff queue */
@@ -711,8 +712,8 @@

                if (stop_backup_sync)
                        break;
-
-               ssleep(1);
+               __set_current_state(TASK_INTERRUPTIBLE);
+               schedule_timeout(HZ);
        }

        /* release the sending multicast socket */
@@ -824,7 +825,8 @@
        if ((pid = kernel_thread(sync_thread, startup, 0)) < 0) {
                IP_VS_ERR("could not create sync_thread due to %d... "
                          "retrying.\n", pid);
-               ssleep(1);
+               __set_current_state(TASK_INTERRUPTIBLE);
+               schedule_timeout(HZ);
                goto repeat;
        }

@@ -858,7 +860,8 @@
        if ((pid = kernel_thread(fork_sync_thread, &startup, 0)) < 0) {
                IP_VS_ERR("could not create fork_sync_thread due to %d... "
                          "retrying.\n", pid);
-               ssleep(1);
+               __set_current_state(TASK_INTERRUPTIBLE);
+               schedule_timeout(HZ);
                goto repeat;
        }




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