m4.10xl also looks good:
[7399124.202570] lp1497428: module verification failed: signature and/or
required key missing - tainting kernel
[7399124.223762] pageblock_nr_pages 0x200
[7399124.226007] node 0 zone 0 info:
[7399124.227849] node 0 zone 0 provided page pfn 0xfff valid 1 present 1
[739912
Looks like this has been corrected, from a recent c4.8xl launch:
--
[0.00] Linux version 3.13.0-71-generic (buildd@lgw01-09) (gcc version
4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015
(Ubuntu 3.13.0-71.114-generic 3.13.11-ckt29)
[0.00] Command line:
Agreed that this is an issue with acpi-cpufreq.
turbostat is broken on Trusty:
$ sudo turbostat
/dev/cpu/0/msr offset 0x641 read failed
But using Brendan Gregg's msr-cloud-tools [1] it seems we are actually
running at max frequency (with intel_idle.max_cstate=0
processor.max_cstate=0 but without
We have tested the patched kernel on one network intensive (high packet)
workload with max_cstate=1 and ondemand governor disabled and it has
lower network throughput than the default kernel had with
intel_pstate=enable. There also appears to be a futex performance issue
with the c4.8xlarge which w
apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1477171/+attachment/4443521/+files/ProcModules.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1477171/+attachment/4443522/+files/UdevDb.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1477171/+attachment/4443520/+files/ProcInterrupts.txt
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apport information
** Tags added: apport-collected ec2-images
** Description changed:
Please can the intel_pstate driver be enabled by default on the Ubuntu
EC2 AMIs. On instances with support for C-states and P-States [1] there
is a notable performance impact and lack of support for highe
apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1477171/+attachment/4443519/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "UdevLog.txt"
https://bugs.launchpad.net/bugs/1477171/+attachment/4443523/+files/UdevLog.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1477171/+attachment/4443524/+files/WifiSyslog.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1477171/+attachment/4443518/+files/Lspci.txt
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