Beside the changes to CPUs, I would just change the
and if it doesn't help, additionally
Monitor the increase of
per day for some days and check if the difference per day decreases after making the recommended changes.
Let us know what vmstat looks like when you have 6 virtual CPUs. Setting up a long time monitoring might reveal when the paging in/out to Paging Space occurs.
---------- Post updated at 03:15 PM ---------- Previous update was at 02:11 PM ----------
I did not mention the pc column of vmstat so far; it constantly shows a pc (physical cpu consumption) of 3.0 which is all you have. Even changing it to more virtual CPUs might not really unburden your 3 physical CPUs. I would strongly go for more CPU units for that LPAR or check out if there is any optimizations possible in the way the application works (code, config, ...).
Last edited by zaxxon; 12-16-2010 at 04:44 AM..
Reason: zaxxon, the word is "physical", "physical", "phy...."...
can someone tell me a good site to go to in order to learn this. please do not recommen nay books because i dont have interest in that. if you know of any good sites with good straight forward explanation on how to split loads on machines that has excessive loading, please let me know
Also,... (1 Reply)
Hi all,
long time ago I posted something, but now, it is needed again :(
Currently, I am handling with a big NFS Server for more than 200 clients, this sever has to work with 256 NFSDs. Because of this huge amount of NFSDs, there are thousands of small write accesses down to the disk and... (3 Replies)
Hi to all,
I'm interested in finding an introduction about Performance Tuning under Unix (or Linux); can somebody please point me in the right direction?
Best regards (1 Reply)
Sorry,
This is out of scope of this group.But I require the clarification pretty urgently.
My Oracle database is parallely enabled.
Still,in a particular table queries do not work "parallely" always.
How is this? (9 Replies)
Hi All,
In last one week, i have posted many questions in this portal. At last i am succeeded to make my 1st unix script.
following are 2 points where my script is taking tooooo long.
1. Print the total number of records excluding header & footer. I have found that awk 'END{print NR -... (2 Replies)
Hi,
I am facing a strange issue. Application is deployed in a cluster with 2 Unix nodes (with same configuration). On one node the application is working fine but on another node we see this behavior I found using vmstat- when the server is not yet started everything is OK; when you start the... (3 Replies)
Dear all,
I have a Local zone , where users feel that performance is not good.
Is it wise to collect the inputs from the local zone rather than taking from the global zone.
And also Can I tune from Global zone , so that it will reflect in local zone.
Rgds
rj (2 Replies)
Overview:
Introduction
What Does Success Mean?
What Does Performance Mean?
Every Picture is Worth a Thousand Words
Work Like a Physicist
Work Like You Walk - One Step at a Time
Learn to Know Your System
Choose Your Weapons!
Tools of the Trade 1 - vmstat
A Little Theory Along the Way -... (1 Reply)
I have a IBM Power9 server coupled with a NVMe StorWize V7000 GEN3 storage, doing some benchmarks and noticing that single thread I/O (80% Read / 20% Write, common OLTP I/O profile) seems slow.
./xdisk -R0 -r80 -b 8k -M 1 -f /usr1/testing -t60 -OD -V
BS Proc AIO read% IO Flag IO/s ... (8 Replies)
Discussion started by: c3rb3rus
8 Replies
LEARN ABOUT CENTOS
tuned
tuned(8) Adaptive system tuning daemon tuned(8)NAME
tuned - dynamic adaptive system tuning daemon
SYNOPSIS
tuned [options]
DESCRIPTION
tuned is a dynamic adaptive system tuning daemon that tunes system settings dynamically depending on usage.
OPTIONS -c CONFFILE, --conffile=CONFFILE
Specify the name and path of the configuration file. By default the /etc/tuned.conf is used.
-d, --daemon
This options starts tuned as a daemon as opposed to in the foreground without forking at startup.
-D, --debug Sets the highest logging level. This could be very useful when having trouble with tuned.
-h, --help Show this help.
-l [LOG], --log[=LOG]
Log to the file LOG. If no LOG file is specified /var/log/tuned/tuned.log is used.
--no-dbus Do not attach to DBus.
-P [PID], --pid[=PID]
Write process ID to the PID file. If no PID file is specified /run/tuned/tuned.pid is used.
-p PROFILE, --profile PROFILE
Tunning profile to be activated. It will override other settings (e.g. from tuned-adm). This is intended for debugging pur-
poses.
-v, --version
Show version information.
FILES
/etc/tuned
/usr/share/doc/tuned-*/README
SEE ALSO tuned.conf(5)tuned-adm(8)AUTHOR
Jan Kalua <jkaluza@redhat.com>
Jan Velak <jvcelak@redhat.com>
Jaroslav karvada <jskarvad@redhat.com>
Phil Knirsch <pknirsch@redhat.com>
REPORTING BUGS
Report bugs to <power-management@lists.fedoraproject.org>.
Fedora Power Management SIG 28 Mar 2012 tuned(8)