I can also confirm the issue on Amazon AWS t2.nano Linux ip-172-31-5-83 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux after DDing a 512Mb file: top - 18:36:00 up 9 min, 1 user, load average: 1.03, 0.64, 0.30 Tasks: 74 total, 3 running, 71 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.5 us, 27.0 sy, 0.2 ni, 41.3 id, 9.8 wa, 0.0 hi, 0.0 si, 21.2 st KiB Mem: 498852 total, 86092 used, 412760 free, 4852 buffers KiB Swap: 0 total, 0 used, 0 free. 15444 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 32 root 20 0 0 0 0 R 98.4 0.0 1:59.16 kswapd0 1 root 20 0 37432 2552 1044 S 0.0 0.5 0:02.77 systemd 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0 5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H 6 root 20 0 0 0 0 S 0.0 0.0 0:00.02 kworker/u30:0 7 root 20 0 0 0 0 S 0.0 0.0 0:00.03 rcu_sched 8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh 9 root 20 0 0 0 0 R 0.0 0.0 0:00.02 rcuos/0 10 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuob/0 11 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0 12 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 13 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 khelper 14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kdevtmpfs 15 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 netns 16 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 perf 17 root 20 0 0 0 0 S 0.0 0.0 0:00.01 xenwatch root@ip-172-31-5-83:/home/ubuntu# ps -aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.4 0.5 37432 2552 ? Ss 18:26 0:02 /sbin/init root 2 0.0 0.0 0 0 ? S 18:26 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S 18:26 0:00 [ksoftirqd/0] root 5 0.0 0.0 0 0 ? S< 18:26 0:00 [kworker/0:0H] root 6 0.0 0.0 0 0 ? S 18:26 0:00 [kworker/u30:0] root 7 0.0 0.0 0 0 ? S 18:26 0:00 [rcu_sched] root 8 0.0 0.0 0 0 ? S 18:26 0:00 [rcu_bh] root 9 0.0 0.0 0 0 ? S 18:26 0:00 [rcuos/0] root 10 0.0 0.0 0 0 ? S 18:26 0:00 [rcuob/0] root 11 0.0 0.0 0 0 ? S 18:26 0:00 [migration/0] root 12 0.0 0.0 0 0 ? S 18:26 0:00 [watchdog/0] root 13 0.0 0.0 0 0 ? S< 18:26 0:00 [khelper] root 14 0.0 0.0 0 0 ? S 18:26 0:00 [kdevtmpfs] root 15 0.0 0.0 0 0 ? S< 18:26 0:00 [netns] root 16 0.0 0.0 0 0 ? S< 18:26 0:00 [perf] root 17 0.0 0.0 0 0 ? S 18:26 0:00 [xenwatch] root 18 0.0 0.0 0 0 ? S 18:26 0:00 [xenbus] root 20 0.0 0.0 0 0 ? S 18:26 0:00 [khungtaskd] root 21 0.0 0.0 0 0 ? S< 18:26 0:00 [writeback] root 22 0.0 0.0 0 0 ? SN 18:26 0:00 [ksmd] root 23 0.0 0.0 0 0 ? S< 18:26 0:00 [crypto] root 24 0.0 0.0 0 0 ? S< 18:26 0:00 [kintegrityd] root 25 0.0 0.0 0 0 ? S< 18:26 0:00 [bioset] root 26 0.0 0.0 0 0 ? S< 18:26 0:00 [kblockd] root 27 0.0 0.0 0 0 ? S< 18:26 0:00 [ata_sff] root 28 0.0 0.0 0 0 ? S< 18:26 0:00 [md] root 29 0.0 0.0 0 0 ? S< 18:26 0:00 [devfreq_wq] root 30 0.0 0.0 0 0 ? S 18:26 0:00 [kworker/u30:1] root 32 23.3 0.0 0 0 ? R 18:26 2:11 [kswapd0] root 33 0.0 0.0 0 0 ? S 18:26 0:00 [fsnotify_mark] root 34 0.0 0.0 0 0 ? S 18:26 0:00 [ecryptfs-kthrea] root 45 0.0 0.0 0 0 ? S< 18:26 0:00 [kthrotld] root 46 0.0 0.0 0 0 ? S< 18:26 0:00 [acpi_thermal_pm] root 47 0.0 0.0 0 0 ? S 18:26 0:00 [scsi_eh_0] root 48 0.0 0.0 0 0 ? S< 18:26 0:00 [scsi_tmf_0] root 49 0.0 0.0 0 0 ? S 18:26 0:00 [scsi_eh_1] root 50 0.0 0.0 0 0 ? S< 18:26 0:00 [scsi_tmf_1] root 55 0.0 0.0 0 0 ? S< 18:26 0:00 [ipv6_addrconf] root 74 0.0 0.0 0 0 ? S< 18:26 0:00 [deferwq] root 75 0.0 0.0 0 0 ? S< 18:26 0:00 [charger_manager] root 129 0.0 0.0 0 0 ? S< 18:26 0:00 [kpsmoused] root 140 0.0 0.0 0 0 ? S 18:26 0:00 [kworker/0:2] root 246 0.0 0.0 0 0 ? S 18:26 0:00 [jbd2/xvda1-8] root 247 0.0 0.0 0 0 ? S< 18:26 0:00 [ext4-rsv-conver] root 301 0.0 0.0 0 0 ? S 18:27 0:00 [kauditd] root 311 0.0 0.8 39756 4248 ? Ss 18:27 0:00 /lib/systemd/systemd-journald root 319 0.0 0.0 0 0 ? S 18:27 0:00 [kworker/0:10] root 338 0.0 0.5 43284 2528 ? Ss 18:27 0:00 /lib/systemd/systemd-udevd systemd+ 388 0.0 0.1 100300 636 ? Ssl 18:27 0:00 /lib/systemd/systemd-timesyncd root 505 0.0 0.0 0 0 ? S< 18:27 0:00 [kworker/0:1H] root 574 0.0 1.3 23460 6888 ? Ss 18:27 0:00 dhclient -1 -v -pf /run/dhclient.eth0.pid -lf /var/lib/dhcp/dhclient.eth0.leases eth0 message+ 653 0.0 0.1 42856 944 ? Ss 18:27 0:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation root 668 0.0 0.1 28540 756 ? Ss 18:27 0:00 /lib/systemd/systemd-logind root 669 0.0 0.1 33612 712 ? Ss 18:27 0:00 /sbin/cgmanager -m name=systemd daemon 670 0.0 0.0 19180 420 ? Ss 18:27 0:00 /usr/sbin/atd -f syslog 679 0.0 0.2 260604 1224 ? Ssl 18:27 0:00 /usr/sbin/rsyslogd -n root 682 0.0 0.2 280228 1400 ? Ssl 18:27 0:00 /usr/lib/accountsservice/accounts-daemon root 683 0.0 0.0 29848 232 ? Ss 18:27 0:00 /usr/bin/lxcfs /var/lib/lxcfs/ root 684 0.0 0.1 26052 716 ? Ss 18:27 0:00 /usr/sbin/cron -f lxc-dns+ 809 0.0 0.1 45272 844 ? S 18:27 0:00 dnsmasq -u lxc-dnsmasq --strict-order --bind-interfaces --pid-file=/run/lxc/dnsmasq.pid --listen-address 10.0.3. root 826 0.0 0.2 277036 1300 ? Ssl 18:27 0:00 /usr/lib/policykit-1/polkitd --no-debug root 1018 0.0 0.2 69932 1236 ? Ss 18:28 0:00 /usr/sbin/sshd -D root 1026 0.0 0.1 14576 532 tty1 Ss+ 18:28 0:00 /sbin/agetty --noclear tty1 linux root 1027 0.0 0.0 12824 416 ttyS0 Ss+ 18:28 0:00 /sbin/agetty --keep-baud 115200 38400 9600 ttyS0 vt220 root 1119 0.0 0.2 99776 1452 ? Ss 18:28 0:00 sshd: ubuntu [priv] ubuntu 1121 0.0 0.3 45168 1680 ? Ss 18:28 0:00 /lib/systemd/systemd --user ubuntu 1122 0.0 0.3 58792 1604 ? S 18:28 0:00 (sd-pam) ubuntu 1190 0.0 0.2 99776 1464 ? S 18:29 0:00 sshd: ubuntu@pts/0 ubuntu 1191 0.0 0.5 21356 2620 pts/0 Ss 18:29 0:00 -bash root 1216 0.0 0.3 55524 1736 pts/0 S 18:30 0:00 sudo su root 1217 0.0 0.2 48812 1240 pts/0 S 18:30 0:00 su root 1218 0.0 0.5 19836 2632 pts/0 S 18:30 0:00 bash root 1238 0.0 0.0 0 0 ? S 18:32 0:00 [kworker/u30:2] root 1255 0.0 0.5 17200 2624 pts/0 R+ 18:36 0:00 ps -aux root@ip-172-31-5-83:/home/ubuntu# dmesg [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 4.2.0-22-generic (buildd@lcy01-22) (gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) ) #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 (Ubuntu 4.2.0-22.27-generic 4.2.6) [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic root=UUID=8b439d74-d58f-493e-ae94-3074e2fcfe1d ro console=tty1 console=ttyS0 net.ifnames=0 [ 0.000000] KERNEL supported cpus: [ 0.000000] Intel GenuineIntel [ 0.000000] AMD AuthenticAMD [ 0.000000] Centaur CentaurHauls [ 0.000000] x86/fpu: xstate_offset[2]: 0240, xstate_sizes[2]: 0100 [ 0.000000] x86/fpu: Supporting XSAVE feature 0x01: 'x87 floating point registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x02: 'SSE registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x04: 'AVX registers' [ 0.000000] x86/fpu: Enabled xstate features 0x7, context size is 0x340 bytes, using 'standard' format. [ 0.000000] x86/fpu: Using 'eager' FPU context switches. [ 0.000000] e820: BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009dfff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009e000-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001fffffff] usable [ 0.000000] BIOS-e820: [mem 0x00000000fc000000-0x00000000ffffffff] reserved [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.4 present. [ 0.000000] DMI: Xen HVM domU, BIOS 4.2.amazon 12/07/2015 [ 0.000000] Hypervisor detected: Xen [ 0.000000] Xen version 4.2. [ 0.000000] Xen Platform PCI: I/O protocol version 1 [ 0.000000] Netfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated NICs. [ 0.000000] Blkfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated disks. You might have to change the root device from /dev/hd[a-d] to /dev/xvd[a-d] in your root= kernel command line option [ 0.000000] HVMOP_pagetable_dying not supported [ 0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved [ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable [ 0.000000] e820: last_pfn = 0x20000 max_arch_pfn = 0x400000000 [ 0.000000] MTRR default type: write-back [ 0.000000] MTRR fixed ranges enabled: [ 0.000000] 00000-9FFFF write-back [ 0.000000] A0000-BFFFF write-combining [ 0.000000] C0000-FFFFF write-back [ 0.000000] MTRR variable ranges enabled: [ 0.000000] 0 base 0000F0000000 mask 3FFFF8000000 uncachable [ 0.000000] 1 base 0000F8000000 mask 3FFFFC000000 uncachable [ 0.000000] 2 disabled [ 0.000000] 3 disabled [ 0.000000] 4 disabled [ 0.000000] 5 disabled [ 0.000000] 6 disabled [ 0.000000] 7 disabled [ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WC UC- WT [ 0.000000] found SMP MP-table at [mem 0x000fbba0-0x000fbbaf] mapped at [ffff8800000fbba0] [ 0.000000] Scanning 1 areas for low memory corruption [ 0.000000] Base memory trampoline at [ffff880000098000] 98000 size 24576 [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] [ 0.000000] [mem 0x00000000-0x000fffff] page 4k [ 0.000000] BRK [0x01ff1000, 0x01ff1fff] PGTABLE [ 0.000000] BRK [0x01ff2000, 0x01ff2fff] PGTABLE [ 0.000000] BRK [0x01ff3000, 0x01ff3fff] PGTABLE [ 0.000000] init_memory_mapping: [mem 0x1fe00000-0x1fffffff] [ 0.000000] [mem 0x1fe00000-0x1fffffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x00100000-0x1fdfffff] [ 0.000000] [mem 0x00100000-0x001fffff] page 4k [ 0.000000] [mem 0x00200000-0x1fdfffff] page 2M [ 0.000000] RAMDISK: [mem 0x1f20e000-0x1f7adfff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000EA020 000024 (v02 Xen ) [ 0.000000] ACPI: XSDT 0x00000000FC00F5A0 000054 (v01 Xen HVM 00000000 HVML 00000000) [ 0.000000] ACPI: FACP 0x00000000FC00F260 0000F4 (v04 Xen HVM 00000000 HVML 00000000) [ 0.000000] ACPI: DSDT 0x00000000FC0035E0 00BBF6 (v02 Xen HVM 00000000 INTL 20090123) [ 0.000000] ACPI: FACS 0x00000000FC0035A0 000040 [ 0.000000] ACPI: FACS 0x00000000FC0035A0 000040 [ 0.000000] ACPI: APIC 0x00000000FC00F360 0000D8 (v02 Xen HVM 00000000 HVML 00000000) [ 0.000000] ACPI: HPET 0x00000000FC00F4B0 000038 (v01 Xen HVM 00000000 HVML 00000000) [ 0.000000] ACPI: WAET 0x00000000FC00F4F0 000028 (v01 Xen HVM 00000000 HVML 00000000) [ 0.000000] ACPI: SSDT 0x00000000FC00F520 000031 (v02 Xen HVM 00000000 INTL 20090123) [ 0.000000] ACPI: SSDT 0x00000000FC00F560 000031 (v02 Xen HVM 00000000 INTL 20090123) [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at [mem 0x0000000000000000-0x000000001fffffff] [ 0.000000] NODE_DATA(0) allocated [mem 0x1fffb000-0x1fffffff] [ 0.000000] [ffffea0000000000-ffffea00007fffff] PMD -> [ffff88001ea00000-ffff88001f1fffff] on node 0 [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] DMA32 [mem 0x0000000001000000-0x000000001fffffff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009dfff] [ 0.000000] node 0: [mem 0x0000000000100000-0x000000001fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000001fffffff] [ 0.000000] On node 0 totalpages: 130973 [ 0.000000] DMA zone: 64 pages used for memmap [ 0.000000] DMA zone: 21 pages reserved [ 0.000000] DMA zone: 3997 pages, LIFO batch:0 [ 0.000000] DMA32 zone: 1984 pages used for memmap [ 0.000000] DMA32 zone: 126976 pages, LIFO batch:31 [ 0.000000] ACPI: PM-Timer IO Port: 0xb008 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-47 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 low level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 low level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 low level) [ 0.000000] ACPI: IRQ0 used by override. [ 0.000000] ACPI: IRQ5 used by override. [ 0.000000] ACPI: IRQ9 used by override. [ 0.000000] ACPI: IRQ10 used by override. [ 0.000000] ACPI: IRQ11 used by override. [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.000000] smpboot: Allowing 15 CPUs, 14 hotplug CPUs [ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.000000] PM: Registered nosave memory: [mem 0x0009e000-0x0009ffff] [ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000dffff] [ 0.000000] PM: Registered nosave memory: [mem 0x000e0000-0x000fffff] [ 0.000000] e820: [mem 0x20000000-0xfbffffff] available for PCI devices [ 0.000000] Booting paravirtualized kernel on Xen HVM [ 0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns [ 0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:15 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 33 pages/cpu @ffff88001e600000 s96728 r8192 d30248 u262144 [ 0.000000] pcpu-alloc: s96728 r8192 d30248 u262144 alloc=1*2097152 [ 0.000000] pcpu-alloc: [0] 00 01 02 03 04 05 06 07 [0] 08 09 10 11 12 13 14 -- [ 0.000000] xen: PV spinlocks enabled [ 0.000000] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes) [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 128904 [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic root=UUID=8b439d74-d58f-493e-ae94-3074e2fcfe1d ro console=tty1 console=ttyS0 net.ifnames=0 [ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes) [ 0.000000] Calgary: detecting Calgary via BIOS EBDA area [ 0.000000] Calgary: Unable to locate Rio Grande table in EBDA - bailing! [ 0.000000] Memory: 491268K/523892K available (8148K kernel code, 1237K rwdata, 3800K rodata, 1460K init, 1292K bss, 32624K reserved, 0K cma-reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=15, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] Build-time adjustment of leaf fanout to 64. [ 0.000000] RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=15. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=15 [ 0.000000] NR_IRQS:16640 nr_irqs:952 16 [ 0.000000] xen:events: Using 2-level ABI [ 0.000000] xen:events: Xen HVM callback vector for event delivery is enabled [ 0.000000] Offload RCU callbacks from all CPUs [ 0.000000] Offload RCU callbacks from CPUs: 0-14. [ 0.000000] Console: colour VGA+ 80x25 [ 0.000000] console [tty1] enabled [ 0.000000] Cannot get hvm parameter CONSOLE_EVTCHN (18): -22! [ 0.000000] console [ttyS0] enabled [ 0.000000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 30580167144 ns [ 0.000000] hpet clockevent registered [ 0.000000] tsc: Detected 2400.036 MHz processor [ 0.008000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4800.07 BogoMIPS (lpj=9600144) [ 0.016004] pid_max: default: 32768 minimum: 301 [ 0.020014] ACPI: Core revision 20150619 [ 0.033954] ACPI: All ACPI Tables successfully acquired [ 0.040029] Security Framework initialized [ 0.044016] AppArmor: AppArmor initialized [ 0.048002] Yama: becoming mindful. [ 0.052065] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes) [ 0.060098] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes) [ 0.068046] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes) [ 0.072004] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes) [ 0.080171] Initializing cgroup subsys blkio [ 0.088005] Initializing cgroup subsys memory [ 0.092011] Initializing cgroup subsys devices [ 0.096003] Initializing cgroup subsys freezer [ 0.100003] Initializing cgroup subsys net_cls [ 0.104003] Initializing cgroup subsys perf_event [ 0.112004] Initializing cgroup subsys net_prio [ 0.116003] Initializing cgroup subsys hugetlb [ 0.120056] CPU: Physical Processor ID: 0 [ 0.124743] mce: CPU supports 2 MCE banks [ 0.128020] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 [ 0.136002] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 [ 0.159504] ftrace: allocating 30910 entries in 121 pages [ 0.188675] x2apic: IRQ remapping doesn't support X2APIC mode [ 0.196003] Switched APIC routing to physical flat. [ 0.202098] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0 [ 0.249577] clocksource: xen: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.256007] Xen: using vcpuop timer interface [ 0.256013] installing Xen timer for CPU 0 [ 0.260052] smpboot: CPU0: Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz (fam: 06, model: 3f, stepping: 02) [ 0.268027] cpu 0 spinlock event irq 53 [ 0.271942] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only. [ 0.276737] x86: Booted up 1 node, 1 CPUs [ 0.280007] smpboot: Total of 1 processors activated (4800.07 BogoMIPS) [ 0.284010] NMI watchdog: disabled (cpu0): hardware events not enabled [ 0.288003] NMI watchdog: Shutting down hard lockup detector on all cpus [ 0.292349] devtmpfs: initialized [ 0.297159] evm: security.selinux [ 0.300005] evm: security.SMACK64 [ 0.303716] evm: security.SMACK64EXEC [ 0.304005] evm: security.SMACK64TRANSMUTE [ 0.308003] evm: security.SMACK64MMAP [ 0.312003] evm: security.ima [ 0.315722] evm: security.capability [ 0.316141] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [ 0.320097] pinctrl core: initialized pinctrl subsystem [ 0.324129] RTC time: 18:26:47, date: 01/10/16 [ 0.328133] NET: Registered protocol family 16 [ 0.332153] cpuidle: using governor ladder [ 0.336014] cpuidle: using governor menu [ 0.340075] ACPI: bus type PCI registered [ 0.344005] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.348389] PCI: Using configuration type 1 for base access [ 0.353036] ACPI: Added _OSI(Module Device) [ 0.356005] ACPI: Added _OSI(Processor Device) [ 0.360003] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.364006] ACPI: Added _OSI(Processor Aggregator Device) [ 0.369023] xen: --> pirq=16 -> irq=9 (gsi=9) [ 0.371647] ACPI: Interpreter enabled [ 0.372008] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20150619/hwxface-580) [ 0.380004] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20150619/hwxface-580) [ 0.387055] ACPI: (supports S0 S3 S4 S5) [ 0.388003] ACPI: Using IOAPIC for interrupt routing [ 0.392031] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 0.457209] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 0.460013] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI] [ 0.464014] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 0.468058] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 0.472766] acpiphp: Slot [0] registered [ 0.477601] acpiphp: Slot [3] registered [ 0.480385] acpiphp: Slot [4] registered [ 0.484388] acpiphp: Slot [5] registered [ 0.488372] acpiphp: Slot [6] registered [ 0.492412] acpiphp: Slot [7] registered [ 0.496360] acpiphp: Slot [8] registered [ 0.500496] acpiphp: Slot [9] registered [ 0.504742] acpiphp: Slot [10] registered [ 0.508376] acpiphp: Slot [11] registered [ 0.512377] acpiphp: Slot [12] registered [ 0.516580] acpiphp: Slot [13] registered [ 0.520399] acpiphp: Slot [14] registered [ 0.525385] acpiphp: Slot [15] registered [ 0.528788] acpiphp: Slot [16] registered [ 0.532401] acpiphp: Slot [17] registered [ 0.536405] acpiphp: Slot [18] registered [ 0.540406] acpiphp: Slot [19] registered [ 0.544488] acpiphp: Slot [20] registered [ 0.548519] acpiphp: Slot [21] registered [ 0.552441] acpiphp: Slot [22] registered [ 0.556506] acpiphp: Slot [23] registered [ 0.560403] acpiphp: Slot [24] registered [ 0.564398] acpiphp: Slot [25] registered [ 0.568378] acpiphp: Slot [26] registered [ 0.572522] acpiphp: Slot [27] registered [ 0.576338] acpiphp: Slot [28] registered [ 0.580363] acpiphp: Slot [29] registered [ 0.584471] acpiphp: Slot [30] registered [ 0.588676] acpiphp: Slot [31] registered [ 0.592364] PCI host bridge to bus 0000:00 [ 0.596006] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.600004] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 0.604014] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 0.608008] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 0.612007] pci_bus 0000:00: root bus resource [mem 0xf0000000-0xfbffffff window] [ 0.616311] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 [ 0.618280] pci 0000:00:01.0: [8086:7000] type 00 class 0x060100 [ 0.621316] pci 0000:00:01.1: [8086:7010] type 00 class 0x010180 [ 0.624548] pci 0000:00:01.1: reg 0x20: [io 0xc100-0xc10f] [ 0.625614] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] [ 0.628008] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6] [ 0.632006] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] [ 0.636007] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376] [ 0.641393] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 [ 0.641675] * Found PM-Timer Bug on the chipset. Due to workarounds for a bug, * this clock source is slow. Consider trying other clock sources [ 0.645558] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 0.649085] pci 0000:00:02.0: [1013:00b8] type 00 class 0x030000 [ 0.649592] pci 0000:00:02.0: reg 0x10: [mem 0xf0000000-0xf1ffffff pref] [ 0.650014] pci 0000:00:02.0: reg 0x14: [mem 0xf3000000-0xf3000fff] [ 0.652462] pci 0000:00:03.0: [5853:0001] type 00 class 0xff8000 [ 0.653341] pci 0000:00:03.0: reg 0x10: [io 0xc000-0xc0ff] [ 0.653644] pci 0000:00:03.0: reg 0x14: [mem 0xf2000000-0xf2ffffff pref] [ 0.658618] ACPI: PCI Interrupt Link [LNKA] (IRQs *5 10 11) [ 0.664263] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 0.671933] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 0.676297] ACPI: PCI Interrupt Link [LNKD] (IRQs *5 10 11) [ 0.705541] ACPI: Enabled 2 GPEs in block 00 to 0F [ 0.708044] xen:balloon: Initialising balloon driver [ 0.716025] xen_balloon: Initialising balloon driver [ 0.720126] vgaarb: setting as boot device: PCI:0000:00:02.0 [ 0.724000] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none [ 0.724010] vgaarb: loaded [ 0.727870] vgaarb: bridge control possible 0000:00:02.0 [ 0.728175] init_memory_mapping: [mem 0x20000000-0x27ffffff] [ 0.732005] [mem 0x20000000-0x27ffffff] page 2M [ 0.732884] [ffffea0000800000-ffffea00009fffff] PMD -> [ffff88001da00000-ffff88001dbfffff] on node 0 [ 0.732938] SCSI subsystem initialized [ 0.736044] libata version 3.00 loaded. [ 0.736066] ACPI: bus type USB registered [ 0.740028] usbcore: registered new interface driver usbfs [ 0.744011] usbcore: registered new interface driver hub [ 0.748020] usbcore: registered new device driver usb [ 0.752137] PCI: Using ACPI for IRQ routing [ 0.756006] PCI: pci_cache_line_size set to 64 bytes [ 0.756571] e820: reserve RAM buffer [mem 0x0009e000-0x0009ffff] [ 0.756684] NetLabel: Initializing [ 0.760004] NetLabel: domain hash size = 128 [ 0.764004] NetLabel: protocols = UNLABELED CIPSOv4 [ 0.768015] NetLabel: unlabeled traffic allowed by default [ 0.772090] HPET: 3 timers in total, 0 timers will be used for per-cpu timer [ 0.776017] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 0.782375] hpet0: 3 comparators, 64-bit 62.500000 MHz counter [ 0.787073] clocksource: Switched to clocksource xen [ 0.794102] AppArmor: AppArmor Filesystem Enabled [ 0.798669] pnp: PnP ACPI init [ 0.802157] system 00:00: [mem 0x00000000-0x0009ffff] could not be reserved [ 0.810376] system 00:00: Plug and Play ACPI device, IDs PNP0c02 (active) [ 0.810457] system 00:01: [io 0x08a0-0x08a3] has been reserved [ 0.816516] system 00:01: [io 0x0cc0-0x0ccf] has been reserved [ 0.822414] system 00:01: [io 0x04d0-0x04d1] has been reserved [ 0.828243] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active) [ 0.828268] xen: --> pirq=17 -> irq=8 (gsi=8) [ 0.828288] pnp 00:02: Plug and Play ACPI device, IDs PNP0b00 (active) [ 0.828307] xen: --> pirq=18 -> irq=12 (gsi=12) [ 0.828321] pnp 00:03: Plug and Play ACPI device, IDs PNP0f13 (active) [ 0.828335] xen: --> pirq=19 -> irq=1 (gsi=1) [ 0.828347] pnp 00:04: Plug and Play ACPI device, IDs PNP0303 PNP030b (active) [ 0.828360] xen: --> pirq=20 -> irq=6 (gsi=6) [ 0.828362] pnp 00:05: [dma 2] [ 0.828374] pnp 00:05: Plug and Play ACPI device, IDs PNP0700 (active) [ 0.828393] xen: --> pirq=21 -> irq=4 (gsi=4) [ 0.828406] pnp 00:06: Plug and Play ACPI device, IDs PNP0501 (active) [ 0.828439] system 00:07: [io 0x10c0-0x1141] has been reserved [ 0.835889] system 00:07: [io 0xb044-0xb047] has been reserved [ 0.841914] system 00:07: Plug and Play ACPI device, IDs PNP0c02 (active) [ 0.865915] pnp: PnP ACPI: found 8 devices [ 0.875866] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 0.884236] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 0.884238] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window] [ 0.884240] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window] [ 0.884241] pci_bus 0000:00: resource 7 [mem 0xf0000000-0xfbffffff window] [ 0.884277] NET: Registered protocol family 2 [ 0.889317] TCP established hash table entries: 4096 (order: 3, 32768 bytes) [ 0.896188] TCP bind hash table entries: 4096 (order: 4, 65536 bytes) [ 0.902456] TCP: Hash tables configured (established 4096 bind 4096) [ 0.909178] UDP hash table entries: 256 (order: 1, 8192 bytes) [ 0.915583] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes) [ 0.923462] NET: Registered protocol family 1 [ 0.927634] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 0.933727] pci 0000:00:01.0: PIIX3: Enabling Passive Release [ 0.938804] pci 0000:00:01.0: Activating ISA DMA hang workarounds [ 0.944771] pci 0000:00:02.0: Video device with shadowed ROM [ 0.944836] PCI: CLS 0 bytes, default 64 [ 0.944904] Trying to unpack rootfs image as initramfs... [ 1.918341] Freeing initrd memory: 5760K (ffff88001f20e000 - ffff88001f7ae000) [ 1.925681] RAPL PMU detected, API unit is 2^-32 Joules, 3 fixed counters 655360 ms ovfl timer [ 1.933270] hw unit of domain pp0-core 2^-14 Joules [ 1.938299] hw unit of domain package 2^-14 Joules [ 1.943812] hw unit of domain dram 2^-16 Joules [ 1.949483] microcode: CPU0 sig=0x306f2, pf=0x1, revision=0x25 [ 1.956101] microcode: Microcode Update Driver: v2.00