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Re: kern/46596: ehci interrupt storm
The following reply was made to PR kern/46596; it has been noted by GNATS.
From: Andreas Gustafsson <gson%gson.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: Nick Hudson <skrll%netbsd.org@localhost>
Subject: Re: kern/46596: ehci interrupt storm
Date: Tue, 17 Sep 2013 19:41:08 +0300
One weird aspect of this bug is that the interrupt storm sometimes starts
immediately at boot, and sometimes only after a seemingly random delay.
I have set up the machine to run the command
(date; vmstat 1 | head -n 10000) >>/root/vmstat-logs/vmstat.`date
+%Y%m%d-%H%M%S`.log &
from /etc/rc.local, and below are the first 100 lines from a typical
log file specimen. It shows the interrupt storm starting about 50
seconds after rc.local was run; that's where the number in the "in"
column jumps from close to zero to more than 240000 and then stays
that way.
I have no idea what triggers the transition.
--
Andreas Gustafsson, gson%gson.org@localhost
Sat Aug 3 19:33:44 EEST 2013
procs memory page disks faults cpu
r b avm fre flt re pi po fr sr w0 w1 in sy cs us sy id
1 1 10584 16071108 142 0 0 0 0 0 36 1 59 3727 68 0 2 98
0 5 15644 16063272 0 0 0 0 0 0 174 0 193 7536 2 1 0 98
2 0 19268 16055340 372 0 0 0 0 0 251 0 340 39028 26 9 1 90
1 0 23824 16042956 2669 0 0 0 0 0 161 0 163 66916 128 12 2 86
0 1 37168 16028664 0 0 0 0 0 0 297 0 300 9424 2 2 0 97
0 0 41328 16024652 7 0 0 0 0 0 235 0 274 29752 6 7 0 93
0 0 41328 16024760 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 0 0 1 16 6 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 85 0 174 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 1 0 2 16 2 0 0 100
0 0 41328 16024760 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 1 30 2 0 0 100
procs memory page disks faults cpu
r b avm fre flt re pi po fr sr w0 w1 in sy cs us sy id
0 0 41444 16024644 0 0 0 0 0 0 0 0 1 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 15 0 33 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 1 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 5 0 10 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 5 0 10 21 4 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 2 0 4 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 10 0 21 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 9 0 20 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 12 0 24 16 2 0 0 100
procs memory page disks faults cpu
r b avm fre flt re pi po fr sr w0 w1 in sy cs us sy id
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 1 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 9 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 0 0 0 16 2 0 0 100
0 0 41444 16024644 0 0 0 0 0 0 9 0 173780 16 2 0 6 94
0 0 41444 16024644 0 0 0 0 0 0 0 0 241291 16 2 0 6 94
0 0 41448 16024640 0 0 0 0 0 0 0 0 240996 16 2 0 7 93
0 0 41448 16024640 0 0 0 0 0 0 0 0 241695 16 2 0 7 93
0 0 41448 16024640 0 0 0 0 0 0 0 0 241665 16 2 0 9 91
0 0 41448 16024640 0 0 0 0 0 0 0 0 241343 16 2 0 9 91
0 0 41448 16024640 0 0 0 0 0 0 0 0 241681 16 4 0 9 91
0 0 41448 16024640 0 0 0 0 0 0 0 0 241777 16 2 0 8 92
0 0 41448 16024640 0 0 0 0 0 0 0 0 241716 16 2 0 10 90
procs memory page disks faults cpu
r b avm fre flt re pi po fr sr w0 w1 in sy cs us sy id
0 0 41448 16024640 0 0 0 0 0 0 0 0 240859 16 2 0 10 90
0 0 41448 16024640 0 0 0 0 0 0 0 0 241229 16 2 0 7 93
0 0 41448 16024640 0 0 0 0 0 0 9 0 241273 16 2 0 8 92
0 0 41448 16024640 0 0 0 0 0 0 0 0 240923 21 2 0 8 92
0 0 43232 16022160 0 0 0 0 0 0 32 0 242051 1479 2 0 10 90
0 0 45788 16019188 968 0 0 0 0 0 74 0 242057 1688 159 0 7 93
0 0 45792 16019184 0 0 0 0 0 0 0 0 241170 148 14 0 6 94
0 0 45800 16019172 168 0 0 0 0 0 2 0 241135 389 22 0 9 91
0 0 45800 16019164 0 0 0 0 0 0 0 0 240661 67 2 0 8 92
0 0 45800 16019164 0 0 0 0 0 0 4 0 240996 16 2 0 7 93
0 0 45800 16019164 0 0 0 0 0 0 0 0 241335 16 2 0 8 92
0 0 45800 16019164 0 0 0 0 0 0 0 0 241060 16 2 0 8 92
0 0 45800 16019164 0 0 0 0 0 0 0 0 241682 16 2 0 8 92
0 0 45800 16019164 0 0 0 0 0 0 77 0 241996 16 2 0 7 93
0 0 45800 16019164 0 0 0 0 0 0 0 0 241940 16 2 0 7 93
0 0 45800 16019164 0 0 0 0 0 0 0 0 241761 16 2 0 6 94
0 0 45800 16019164 0 0 0 0 0 0 0 0 241305 16 2 0 7 93
0 0 45800 16019164 0 0 0 0 0 0 0 0 241191 16 14 0 7 93
procs memory page disks faults cpu
r b avm fre flt re pi po fr sr w0 w1 in sy cs us sy id
0 0 45800 16019164 0 0 0 0 0 0 0 0 241310 16 2 0 8 92
0 0 45800 16019164 0 0 0 0 0 0 0 0 241560 16 2 0 8 92
0 0 45800 16019164 0 0 0 0 0 0 0 0 241718 40 4 0 9 91
0 0 45800 16019164 0 0 0 0 0 0 0 0 241477 40 4 0 8 92
0 0 45800 16019164 17 0 0 0 0 0 0 0 241381 209 10 0 10 90
0 0 45800 16019120 0 0 0 0 0 0 9 0 241014 408 4 0 9 91
0 1 46608 16006820 3203 0 0 0 0 0 31 0 241433 537 71 0 8 92
0 1 46608 16006820 0 0 0 0 0 0 0 0 240942 16 2 0 8 92
0 1 46608 16006820 0 0 0 0 0 0 0 0 241288 16 2 0 9 91
0 1 46608 16006820 0 0 0 0 0 0 0 0 241236 16 4 0 9 91
0 1 46608 16006820 0 0 0 0 0 0 0 0 241044 16 2 0 9 91
0 1 46608 16006820 0 0 0 0 0 0 0 0 241506 16 6 0 9 91
0 1 46608 16006820 0 0 0 0 0 0 0 0 241603 16 2 0 7 93
0 1 46608 16006820 0 0 0 0 0 0 0 0 241620 16 2 0 7 93
0 1 46608 16006820 0 0 0 0 0 0 0 0 241729 16 2 0 10 90
0 1 46608 16006820 0 0 0 0 0 0 0 0 241363 21 2 0 7 93
0 0 58228 15994924 854 0 0 0 0 0 121 0 240907 904 785 0 9 91
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