Canonical Supporting IBM POWER8

With this Ubuntu guest run on PowerKVM hypervisor and Ubuntu cloud can manage PowerKVM Hypervisor & also Big Data.

http://thevarguy.com/ubuntu/062714/canonical-pursues-ibm-power8-ubuntu-cloud-server-and-big-data?fb_action_ids=10152629146592450&fb_action_types=og.recommends

Pathetic situation for women in Bangalore ATMs

This evening, went to an ICICI bank ATM in kammanahali, Bangalore to withdraw money.  When i was about to come out of ATM, one old lady came inside ATM and requested me for  help.  She spoke very good english.   She inserted her debit card in ATM and provided all details ( language, savings, amount, pin..etc) with out my help .  She was able to proceed further on her own with out any assistance from me.  I was wondering, why the hell she asked me to stay, when she was able to do on her own.

I thought of leaving,  since she has provided all the details and about to receive money .  She requested me to stay in ATM for some more time.

She collected her money and we both came out. Then she said  " I am very scared to go to ATM these days, due to recent incidents in ATM.  I have been waiting in front of ATM since 10 mins  to find some one in ATM. ". 

Finally she said, "God Bless you my son" 

She needed some one to accompany here, when ever she goes to an ATM. Such pathetic situation it is. :(




Recent Bangalore ATM incident: 
http://www.youtube.com/watch?v=fp9YAKdOQLI ,

POWER8 News

Open power: 

http://openpowerfoundation.org/

Open Sourced BIOS Helps Power8 Compete With X86 

 

http://www.enterprisetech.com/2014/07/15/open-sourced-bios-helps-power8-compete-x86/

Google acquires a taste for power

http://www.cnet.com/news/google-acquires-a-taste-for-ibms-power8-processors/

 Deploy and manage workload on power8

http://www.jorgecastro.org/2014/05/01/deploying-and-managing-workloads-to-power8/



http://www.itjungle.com/tfh/tfh033114-story01.html

Power8 code:
https://code.google.com/p/power8/downloads/list

macvtap

http://hekate.homeip.net/2011/06/kvm-macvtap-interface-bridging/

New Autotest usage

1)  get autotest git recursively.

git clone --recursive git://github.com/autotest/autotest.git

2)  cd autotest/client/tests/virt

3) cd kvm  or cd libvirt

4) ./get_started.py

5) change tests.cfg which is in cfg folder

6) cd autotest/client/tests/virt

7) export AUTOTEST_PATH= 
                                            for ex: /home/autotest

8) ./run -t kvm --verbose

    or

   ./run -t libvirt --verbose

Please use ./run -h for more help. 

Great article on git by nvie. http://nvie.com/posts/a-successful-git-branching-model/

Perf KVM

Perf KVM in RHEL6.1:
===================

Thanks to supriya kannery for documenting perf kvm

RPM
=====
[root @]# rpm -qa | grep perf
perf-2.6.32-131.0.15.el6.x86_64

Preparation:
==========
Before running perf kvm in host, need to save files /proc/modules and /proc/kallsyms from guest into host.
One of the easiest methods is as follows:

> start VM with host portforwarding
start guest

> Login to the guest and save modules and kallsyms
cat /proc/modules > /tmp/modules
cat /proc/modules > /tmp/kallsyms
>> From host get the above two files.
scp -P 5555 root@localhost:/tmp/kallsyms guest-kallsyms
scp -P 5555 root@localhost:/tmp/modules guest-modules

Note: if directly scp from /proc/modules, zero sized files are copied. Hence first save /proc/xx into locate files in guest and then copy to host.

Start recording events in guest and host
===========================
perf kvm --host --guest --guestkallsyms=guest-kallsyms --guestmodules=guest-modules record -a -o perf.data

Output will be stored in perf.data.kvm if both --host and --guest are specified. If only --host is specified the file will be named perf.data.host and if only --guest is specified file will be named perf.data.guest

On pressing Ctl+C or SIGINT perf stops recording.

Report the events:
===============
perf kvm --host --guest --guestkallsyms=guest-kallsyms --guestmodules=guest-modules report -i perf.data --force

Note: without using --force I couldn't collect report even though the recorded file and report was generated using same userid or root. This might be a bug to be looked at. But for now, reporting works with --force option.

Sample results:
[root]# perf kvm --host --guest --guestmodules=guest-modules report -i perf.data.kvm --force > analyse
[root]# cat analyse
# Events: 7K cycles
#
# Overhead Command Shared Object Symbol
# ........ ............ ................. .....................................
#
95.06% vi vi [.] 0x48287
0.61% init [kernel.kallsyms] [k] intel_idle
0.36% vi libc-2.12.so [.] _wordcopy_fwd_aligned
0.32% vi libc-2.12.so [.] __strlen_sse42
0.14% swapper [kernel.kallsyms] [k] intel_idle
0.13% init [kernel.kallsyms] [k] uhci_irq
0.11% perf [kernel.kallsyms] [k] generic_exec_single
0.11% init [kernel.kallsyms] [k] tg_shares_up
0.10% qemu-kvm [kernel.kallsyms] [k] tg_shares_up


[root]# perf report --sort comm,dso -i perf.data.kvm --force > highlevel
[root]# cat highlevel
# Events: 7K cycles
#
# Overhead Command Shared Object
# ........ ............ .................
#
95.06% vi vi
1.55% init [kernel.kallsyms]
0.75% vi [kernel.kallsyms]
0.69% vi libc-2.12.so
0.50% perf [kernel.kallsyms]
0.30% swapper [kernel.kallsyms]
0.19% ps [kernel.kallsyms]
0.17% qemu-kvm [kernel.kallsyms]
0.09% events/5 [kernel.kallsyms]
0.09% events/1 [kernel.kallsyms]
0.09% events/24 [kernel.kallsyms]
0.08% ps libc-2.12.so
0.08% events/25 [kernel.kallsyms]
0.07% kondemand/8 [kernel.kallsyms]
0.07% kondemand/23 [kernel.kallsyms]
0.07% perf libc-2.12.so
0.07% watchdog/26 [kernel.kallsyms]
0.01% kondemand/15 [kernel.kallsyms]
0.01% ksoftirqd/18 [kernel.kallsyms]
0.01% perf [nfs]
0.01% ps libproc-3.2.8.so
0.01% qemu-kvm [unknown]
0.01% qemu-kvm qemu-kvm
0.00% sleep [kernel.kallsyms]
0.00% awk [kernel.kallsyms]