linux-kernel - Re: sched_setscheduler() vs idle

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 29 May 2015 20:48:56 +0200
From:	Mike Galbraith <umgwanakikbuti@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	ktkhai@...allels.com
Subject: Re: sched_setscheduler() vs idle_balance() race


P.S. intel_idle is not all that wonderful on this box.

-   78.31%  [kernel]       [k] _raw_spin_lock                                                                                                                                                                                              ▒
   - _raw_spin_lock                                                                                                                                                                                                                        ▒
      - 94.91% tick_broadcast_oneshot_control                                                                                                                                                                                              ▒
           intel_idle                                                                                                                                                                                                                      ▒
           cpuidle_enter_state                                                                                                                                                                                                             ▒
           cpuidle_enter                                                                                                                                                                                                                   ▒
         + cpu_startup_entry                                                                                                                                                                                                               ▒
      + 1.63% pull_rt_task                                                                                                                                                                                                                 ▒
      + 1.35% __sched_setscheduler                                                                                                                                                                                                         ▒
      + 1.11% push_rt_task.part.46                                                                                                                                                                                                         ▒
+    2.44%  [kernel]       [k] native_write_msr_safe



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/