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Message-ID: <4FD349FF.7060305@linux.vnet.ibm.com> Date: Sat, 09 Jun 2012 18:35:03 +0530 From: "Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com> To: cheng renquan <crquan@...il.com> CC: linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>, Linux PM mailing list <linux-pm@...r.kernel.org> Subject: Re: 67 kworker threads ? On 06/09/2012 01:49 AM, cheng renquan wrote: > I have kernel v3.4.0 up & running over 2 weeks on a 4-cores typical > lenovo laptop, > with suspend & resume only, every day; have just found after a resume the kernel > may spawn too many kworker threads, totally 67 kworker threads now, > I think this is abnormal > > $ ps fu -e |awk 'NR <=2 || /[k]worker/' > USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND > root 2 0.0 0.0 0 0 ? S Jun07 0:00 [kthreadd] > root 10271 0.0 0.0 0 0 ? S 11:35 0:00 \_ > [kworker/0:3] > root 11683 0.0 0.0 0 0 ? S 11:46 0:00 \_ > [kworker/u:0] > root 14364 0.0 0.0 0 0 ? S 12:08 0:01 \_ > [kworker/0:0] > root 14965 0.1 0.0 0 0 ? S 12:13 0:03 \_ > [kworker/u:1] > root 17154 0.0 0.0 0 0 ? S 12:31 0:00 \_ > [kworker/u:2] > root 17937 0.0 0.0 0 0 ? S 12:38 0:00 \_ > [kworker/u:3] > root 18286 0.0 0.0 0 0 ? S 12:39 0:00 \_ > [kworker/u:4] > root 18287 0.0 0.0 0 0 ? S 12:39 0:00 \_ > [kworker/u:5] > root 18288 0.0 0.0 0 0 ? S 12:39 0:00 \_ > [kworker/u:6] > root 18289 0.0 0.0 0 0 ? S 12:39 0:00 \_ > [kworker/u:7] > root 18290 0.0 0.0 0 0 ? S 12:39 0:00 \_ > [kworker/u:8] > root 18291 0.0 0.0 0 0 ? S 12:39 0:00 \_ > [kworker/u:9] > root 18292 0.0 0.0 0 0 ? S 12:39 0:00 \_ > [kworker/u:10] > root 18300 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/1:2] > root 18303 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/2:2] > root 18306 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/3:0] > root 18320 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:11] > root 18321 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:12] > root 18322 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:13] > root 18323 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:14] > root 18324 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:15] > root 18325 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:16] > root 18326 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:17] > root 18327 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:18] > root 18328 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:19] > root 18329 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:20] > root 18330 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:21] > root 18331 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:22] > root 18332 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:23] > root 18333 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:24] > root 18334 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:25] > root 18335 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:26] > root 18336 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:27] > root 18337 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:28] > root 18338 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:29] > root 18339 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:30] > root 18340 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:31] > root 18341 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:32] > root 18342 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:33] > root 18343 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:34] > root 18344 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:35] > root 18345 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:36] > root 18346 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:37] > root 18347 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:38] > root 18348 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:39] > root 18349 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:40] > root 18350 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:41] > root 18351 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:42] > root 18352 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:43] > root 18353 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:44] > root 18354 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:45] > root 18355 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:46] > root 18356 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:47] > root 18357 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:48] > root 18358 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:49] > root 18359 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:50] > root 18360 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:51] > root 18361 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:52] > root 18362 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:53] > root 18363 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:54] > root 18364 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:55] > root 18365 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:56] > root 18366 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:57] > root 18367 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:58] > root 18368 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/u:59] > root 18369 0.9 0.0 0 0 ? S 13:05 0:01 \_ > [kworker/3:1] > root 18370 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/0:1] > root 18374 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/0:2] > root 18380 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/1:0] > root 18393 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/2:0] > root 18506 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/3:2] > root 18571 0.0 0.0 0 0 ? S 13:05 0:00 \_ > [kworker/2:1] Can you share your .config please? Regards, Srivatsa S. Bhat -- 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/
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