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Date: Sat, 12 Feb 2011 01:08:16 +0100
From: Sascha Warner <swarner@...tec.de>
To: linux-kernel@...r.kernel.org
Subject: linux-next-20110211 ntpd issue
Hi,
while testing linux-next 20110211 i saw how my memory filled, about 1
MB/s went into use by the Kernel somehow. Seeing the below, i tried
killing my ntpd which stopped the mem eating. I have applied fixes to
zcache and epoll. This machine is a Q6600.
[ 30.896025] eth0: no IPv6 routers present
[ 83.968025] P2489 P2488
[ 83.968029] INFO: rcu_preempt_state detected stalls on CPUs/tasks: {
P2489 P2488} (detected by 2, t=15002 jiffies)
[ 83.968036] ntpd S ffff88013fccc330 0 2489 2488
0x00000000
[ 83.968042] ffff88013ba0ba58 0000000000000086 ffff88013ba0ba48
ffffffff00000000
[ 83.968048] 0000000000011280 ffff88013fccc0a0 0000000000011280
ffff88013ba0bfd8
[ 83.968053] 0000000000011280 ffff88013ba0bfd8 ffff88013fccc338
ffff88013ba0a000
[ 83.968058] Call Trace:
[ 83.968067] [<ffffffff814d2f49>]
schedule_hrtimeout_range_clock+0xa9/0x130
[ 83.968073] [<ffffffff8105d830>] ? hrtimer_wakeup+0x0/0x30
[ 83.968078] [<ffffffff810eb5af>] ? __pollwait+0x6f/0xf0
[ 83.968082] [<ffffffff814d2fde>] schedule_hrtimeout_range+0xe/0x10
[ 83.968086] [<ffffffff810eb474>] poll_schedule_timeout+0x44/0x60
[ 83.968090] [<ffffffff810ec897>] do_sys_poll+0x367/0x4f0
[ 83.968094] [<ffffffff810eb540>] ? __pollwait+0x0/0xf0
[ 83.968098] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 83.968102] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 83.968106] [<ffffffff81491805>] ? inet_recvmsg+0x95/0xc0
[ 83.968111] [<ffffffff81429008>] ? sock_recvmsg+0xf8/0x130
[ 83.968115] [<ffffffff81429184>] ? sock_sendmsg+0xe4/0x110
[ 83.968120] [<ffffffff810b543c>] ? handle_pte_fault+0x53c/0x940
[ 83.968124] [<ffffffff810b2bae>] ? __pte_alloc+0xde/0x130
[ 83.968128] [<ffffffff810b6bc2>] ? handle_mm_fault+0x192/0x2e0
[ 83.968132] [<ffffffff8142b53f>] ? sys_recvfrom+0xbf/0x120
[ 83.968136] [<ffffffff81490c91>] ? inet_dgram_connect+0x31/0x80
[ 83.968141] [<ffffffff810638dc>] ? ktime_get_ts+0xac/0xe0
[ 83.968145] [<ffffffff810eb822>] ? poll_select_set_timeout+0x82/0x90
[ 83.968149] [<ffffffff810ecaf7>] sys_poll+0x77/0x100
[ 83.968153] [<ffffffff81002dbb>] system_call_fastpath+0x16/0x1b
[ 83.968157] ntpd S ffff88013ffc0e50 0 2488 1
0x00000000
[ 83.968162] ffff88013ba09a58 0000000000000086 0000000000000001
0000000000000001
[ 83.968167] 0000000000011280 ffff88013ffc0bc0 0000000000011280
ffff88013ba09fd8
[ 83.968172] 0000000000011280 ffff88013ba09fd8 ffff88013ffc0e58
ffff88013ba08000
[ 83.968177] Call Trace:
[ 83.968182] [<ffffffff8102f8e5>] ? check_preempt_curr+0x75/0xa0
[ 83.968186] [<ffffffff814d2fad>]
schedule_hrtimeout_range_clock+0x10d/0x130
[ 83.968190] [<ffffffff8105a479>] ? add_wait_queue+0x49/0x60
[ 83.968194] [<ffffffff810eb5af>] ? __pollwait+0x6f/0xf0
[ 83.968198] [<ffffffff814d2fde>] schedule_hrtimeout_range+0xe/0x10
[ 83.968202] [<ffffffff810eb474>] poll_schedule_timeout+0x44/0x60
[ 83.968206] [<ffffffff810ec897>] do_sys_poll+0x367/0x4f0
[ 83.968210] [<ffffffff810eb540>] ? __pollwait+0x0/0xf0
[ 83.968213] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 83.968227] [<ffffffff81428525>] ? sock_aio_write+0x135/0x150
[ 83.968230] [<ffffffff814283f0>] ? sock_aio_write+0x0/0x150
[ 83.968237] [<ffffffff810da8ab>] ? do_sync_readv_writev+0xcb/0x110
[ 83.968240] [<ffffffff8110e4d2>] ? fsnotify+0x1b2/0x2c0
[ 83.968242] [<ffffffff810b2bae>] ? __pte_alloc+0xde/0x130
[ 83.968245] [<ffffffff810dac20>] ? do_readv_writev+0x190/0x1d0
[ 83.968248] [<ffffffff810f6354>] ? mnt_get_count+0x44/0x60
[ 83.968251] [<ffffffff810f59b3>] ?
vfsmount_lock_global_unlock_online+0x43/0x80
[ 83.968254] [<ffffffff810f68d6>] ? mntput_no_expire+0xa6/0xe0
[ 83.968256] [<ffffffff810f692a>] ? mntput+0x1a/0x30
[ 83.968259] [<ffffffff810dbacf>] ? fput+0x15f/0x200
[ 83.968262] [<ffffffff810ecaf7>] sys_poll+0x77/0x100
[ 83.968265] [<ffffffff81002dbb>] system_call_fastpath+0x16/0x1b
[ 83.968267] ntpd S ffff88013fccc330 0 2489 2488
0x00000000
[ 83.968270] ffff88013ba0ba58 0000000000000086 ffff88013ba0ba48
ffffffff00000000
[ 83.968273] 0000000000011280 ffff88013fccc0a0 0000000000011280
ffff88013ba0bfd8
[ 83.968277] 0000000000011280 ffff88013ba0bfd8 ffff88013fccc338
ffff88013ba0a000
[ 83.968280] Call Trace:
[ 83.968283] [<ffffffff814d2f49>]
schedule_hrtimeout_range_clock+0xa9/0x130
[ 83.968286] [<ffffffff8105d830>] ? hrtimer_wakeup+0x0/0x30
[ 83.968288] [<ffffffff810eb5af>] ? __pollwait+0x6f/0xf0
[ 83.968291] [<ffffffff814d2fde>] schedule_hrtimeout_range+0xe/0x10
[ 83.968293] [<ffffffff810eb474>] poll_schedule_timeout+0x44/0x60
[ 83.968296] [<ffffffff810ec897>] do_sys_poll+0x367/0x4f0
[ 83.968299] [<ffffffff810eb540>] ? __pollwait+0x0/0xf0
[ 83.968301] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 83.968304] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 83.968307] [<ffffffff81491805>] ? inet_recvmsg+0x95/0xc0
[ 83.968309] [<ffffffff81429008>] ? sock_recvmsg+0xf8/0x130
[ 83.968312] [<ffffffff81429184>] ? sock_sendmsg+0xe4/0x110
[ 83.968315] [<ffffffff810b543c>] ? handle_pte_fault+0x53c/0x940
[ 83.968317] [<ffffffff810b2bae>] ? __pte_alloc+0xde/0x130
[ 83.968320] [<ffffffff810b6bc2>] ? handle_mm_fault+0x192/0x2e0
[ 83.968323] [<ffffffff8142b53f>] ? sys_recvfrom+0xbf/0x120
[ 83.968325] [<ffffffff81490c91>] ? inet_dgram_connect+0x31/0x80
[ 83.968328] [<ffffffff810638dc>] ? ktime_get_ts+0xac/0xe0
[ 83.968331] [<ffffffff810eb822>] ? poll_select_set_timeout+0x82/0x90
[ 83.968334] [<ffffffff810ecaf7>] sys_poll+0x77/0x100
[ 83.968336] [<ffffffff81002dbb>] system_call_fastpath+0x16/0x1b
[ 83.968338] ntpd S ffff88013ffc0e50 0 2488 1
0x00000000
[ 83.968341] ffff88013ba09a58 0000000000000086 0000000000000001
0000000000000001
[ 83.968344] 0000000000011280 ffff88013ffc0bc0 0000000000011280
ffff88013ba09fd8
[ 83.968348] 0000000000011280 ffff88013ba09fd8 ffff88013ffc0e58
ffff88013ba08000
[ 83.968351] Call Trace:
[ 83.968354] [<ffffffff8102f8e5>] ? check_preempt_curr+0x75/0xa0
[ 83.968357] [<ffffffff814d2fad>]
schedule_hrtimeout_range_clock+0x10d/0x130
[ 83.968359] [<ffffffff8105a479>] ? add_wait_queue+0x49/0x60
[ 83.968362] [<ffffffff810eb5af>] ? __pollwait+0x6f/0xf0
[ 83.968364] [<ffffffff814d2fde>] schedule_hrtimeout_range+0xe/0x10
[ 83.968367] [<ffffffff810eb474>] poll_schedule_timeout+0x44/0x60
[ 83.968370] [<ffffffff810ec897>] do_sys_poll+0x367/0x4f0
[ 83.968372] [<ffffffff810eb540>] ? __pollwait+0x0/0xf0
[ 83.968375] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 83.968378] [<ffffffff81428525>] ? sock_aio_write+0x135/0x150
[ 83.968381] [<ffffffff814283f0>] ? sock_aio_write+0x0/0x150
[ 83.968384] [<ffffffff810da8ab>] ? do_sync_readv_writev+0xcb/0x110
[ 83.968386] [<ffffffff8110e4d2>] ? fsnotify+0x1b2/0x2c0
[ 83.968389] [<ffffffff810b2bae>] ? __pte_alloc+0xde/0x130
[ 83.968392] [<ffffffff810dac20>] ? do_readv_writev+0x190/0x1d0
[ 83.968394] [<ffffffff810f6354>] ? mnt_get_count+0x44/0x60
[ 83.968397] [<ffffffff810f59b3>] ?
vfsmount_lock_global_unlock_online+0x43/0x80
[ 83.968400] [<ffffffff810f68d6>] ? mntput_no_expire+0xa6/0xe0
[ 83.968402] [<ffffffff810f692a>] ? mntput+0x1a/0x30
[ 83.968405] [<ffffffff810dbacf>] ? fput+0x15f/0x200
[ 83.968407] [<ffffffff810ecaf7>] sys_poll+0x77/0x100
[ 83.968410] [<ffffffff81002dbb>] system_call_fastpath+0x16/0x1b
[ 465.795998] P2844
[ 465.796000] INFO: rcu_preempt_state detected stalls on CPUs/tasks: {
P2844} (detected by 2, t=15002 jiffies)
[ 465.796001] links S ffff88013543ec50 0 2844 2687
0x00000000
[ 465.796001] ffff88013b93b908 0000000000000086 ffff88013b93b8f8
ffffffff00000000
[ 465.796001] 0000000000011280 ffff88013543e9c0 0000000000011280
ffff88013b93bfd8
[ 465.796001] 0000000000011280 ffff88013b93bfd8 ffff88013543ec58
ffff88013b93a000
[ 465.796001] Call Trace:
[ 465.796001] [<ffffffff814d2f49>]
schedule_hrtimeout_range_clock+0xa9/0x130
[ 465.796001] [<ffffffff8105d830>] ? hrtimer_wakeup+0x0/0x30
[ 465.796001] [<ffffffff810eb5af>] ? __pollwait+0x6f/0xf0
[ 465.796001] [<ffffffff814d2fde>] schedule_hrtimeout_range+0xe/0x10
[ 465.796001] [<ffffffff810eb474>] poll_schedule_timeout+0x44/0x60
[ 465.796001] [<ffffffff810ebdaa>] do_select+0x57a/0x6e0
[ 465.796001] [<ffffffff81463daa>] ? ip_finish_output+0x12a/0x360
[ 465.796001] [<ffffffff810eb540>] ? __pollwait+0x0/0xf0
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff814641e8>] ? ip_queue_xmit+0x168/0x3e0
[ 465.796001] [<ffffffff8102f8f4>] ? check_preempt_curr+0x84/0xa0
[ 465.796001] [<ffffffff8103859c>] ? try_to_wake_up+0x1bc/0x2d0
[ 465.796001] [<ffffffff8104aac6>] ? lock_timer_base.clone.28+0x36/0x70
[ 465.796001] [<ffffffff810386bd>] ? default_wake_function+0xd/0x10
[ 465.796001] [<ffffffff8102f679>] ? __wake_up_common+0x59/0x90
[ 465.796001] [<ffffffff810ec0c7>] core_sys_select+0x1b7/0x300
[ 465.796001] [<ffffffff8102fbae>] ? __wake_up+0x4e/0x70
[ 465.796001] [<ffffffff8110e4d2>] ? fsnotify+0x1b2/0x2c0
[ 465.796001] [<ffffffff8122acd2>] ? put_ldisc+0x42/0xb0
[ 465.796001] [<ffffffff810638dc>] ? ktime_get_ts+0xac/0xe0
[ 465.796001] [<ffffffff810ec252>] sys_select+0x42/0x100
[ 465.796001] [<ffffffff81002dbb>] system_call_fastpath+0x16/0x1b
[ 465.796001] links S ffff88013543ec50 0 2844 2687
0x00000000
[ 465.796001] ffff88013b93b908 0000000000000086 ffff88013b93b8f8
ffffffff00000000
[ 465.796001] 0000000000011280 ffff88013543e9c0 0000000000011280
ffff88013b93bfd8
[ 465.796001] 0000000000011280 ffff88013b93bfd8 ffff88013543ec58
ffff88013b93a000
[ 465.796001] Call Trace:
[ 465.796001] [<ffffffff814d2f49>]
schedule_hrtimeout_range_clock+0xa9/0x130
[ 465.796001] [<ffffffff8105d830>] ? hrtimer_wakeup+0x0/0x30
[ 465.796001] [<ffffffff810eb5af>] ? __pollwait+0x6f/0xf0
[ 465.796001] [<ffffffff814d2fde>] schedule_hrtimeout_range+0xe/0x10
[ 465.796001] [<ffffffff810eb474>] poll_schedule_timeout+0x44/0x60
[ 465.796001] [<ffffffff810ebdaa>] do_select+0x57a/0x6e0
[ 465.796001] [<ffffffff81463daa>] ? ip_finish_output+0x12a/0x360
[ 465.796001] [<ffffffff810eb540>] ? __pollwait+0x0/0xf0
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff810eb630>] ? pollwake+0x0/0x60
[ 465.796001] [<ffffffff814641e8>] ? ip_queue_xmit+0x168/0x3e0
[ 465.796001] [<ffffffff8102f8f4>] ? check_preempt_curr+0x84/0xa0
[ 465.796001] [<ffffffff8103859c>] ? try_to_wake_up+0x1bc/0x2d0
[ 465.796001] [<ffffffff8104aac6>] ? lock_timer_base.clone.28+0x36/0x70
[ 465.796001] [<ffffffff810386bd>] ? default_wake_function+0xd/0x10
[ 465.796001] [<ffffffff8102f679>] ? __wake_up_common+0x59/0x90
[ 465.796001] [<ffffffff810ec0c7>] core_sys_select+0x1b7/0x300
[ 465.796001] [<ffffffff8102fbae>] ? __wake_up+0x4e/0x70
[ 465.796001] [<ffffffff8110e4d2>] ? fsnotify+0x1b2/0x2c0
[ 465.796001] [<ffffffff8122acd2>] ? put_ldisc+0x42/0xb0
[ 465.796001] [<ffffffff810638dc>] ? ktime_get_ts+0xac/0xe0
[ 465.796001] [<ffffffff810ec252>] sys_select+0x42/0x100
[ 465.796001] [<ffffffff81002dbb>] system_call_fastpath+0x16/0x1b
[ 680.055998] P0
[ 680.056000] INFO: rcu_preempt_state detected stalls on CPUs/tasks: {
P0} (detected by 2, t=15002 jiffies)
[ 680.056001] swapper R running task 0 0 0
0x00000000
[ 680.056001] ffffffff8169fef8 ffff8800bfc11c40 0000000000011c40
0000000000000000
[ 680.056001] ffffffff8169fe88 ffffffff810036ce ffffffff8169fef8
0000000000000000
[ 680.056001] 0000000000000001 0000000000000000 00000000ffffffff
0000000000000000
[ 680.056001] Call Trace:
[ 680.056001] [<ffffffff810036ce>] ? apic_timer_interrupt+0xe/0x20
[ 680.056001] [<ffffffff8105f73c>] ?
__atomic_notifier_call_chain+0x4c/0x70
[ 680.056001] [<ffffffff8105f771>] ? atomic_notifier_call_chain+0x11/0x20
[ 680.056001] [<ffffffff810011c0>] ? enter_idle+0x20/0x30
[ 680.056001] [<ffffffff81001256>] cpu_idle+0x56/0xa0
[ 680.056001] [<ffffffff814b457f>] rest_init+0x8f/0xa0
[ 680.056001] [<ffffffff8172094b>] start_kernel+0x2e5/0x2f0
[ 680.056001] [<ffffffff817200ff>] x86_64_start_reservations+0xfc/0x100
[ 680.056001] [<ffffffff817201f8>] x86_64_start_kernel+0xf5/0xfc
[ 680.056001] swapper R running task 0 0 0
0x00000000
[ 680.056001] ffffffff8169fef8 ffff8800bfc11c40 0000000000011c40
0000000000000000
[ 680.056001] ffffffff8169fe88 ffffffff810036ce ffffffff8169fef8
0000000000000000
[ 680.056001] 0000000000000001 0000000000000000 00000000ffffffff
0000000000000000
[ 680.056001] Call Trace:
[ 680.056001] [<ffffffff810036ce>] ? apic_timer_interrupt+0xe/0x20
[ 680.056001] [<ffffffff8105f73c>] ?
__atomic_notifier_call_chain+0x4c/0x70
[ 680.056001] [<ffffffff8105f771>] ? atomic_notifier_call_chain+0x11/0x20
[ 680.056001] [<ffffffff810011c0>] ? enter_idle+0x20/0x30
[ 680.056001] [<ffffffff81001256>] cpu_idle+0x56/0xa0
[ 680.056001] [<ffffffff814b457f>] rest_init+0x8f/0xa0
[ 680.056001] [<ffffffff8172094b>] start_kernel+0x2e5/0x2f0
[ 680.056001] [<ffffffff817200ff>] x86_64_start_reservations+0xfc/0x100
[ 680.056001] [<ffffffff817201f8>] x86_64_start_kernel+0xf5/0xfc
Kind regards,
Sascha Warner
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