09-15-2013
Just a small comment. Beware that depending on the operating system used there are (rare) cases where monitoring commands display slightly different metrics under the same label so might lead to incorrect interpretation.
In particular, what you wrote about the pi/po columns do not apply at least to Solaris vmstat with which the paging activity account disk read and writes due to normal virtual memory I/O like regular mmaped files being accessed.
On Solaris, what AIX reports as pi/po is shown under the api/apo (anonymous pages in/out) columns when the '-p' option is passed to vmstat.
7 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
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)
Discussion started by: TRUEST
1 Replies
2. Filesystems, Disks and Memory
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)
Discussion started by: malcom
3 Replies
3. UNIX for Dummies Questions & Answers
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)
Discussion started by: domyalex
1 Replies
4. Shell Programming and Scripting
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)
Discussion started by: kthri
9 Replies
5. Shell Programming and Scripting
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)
Discussion started by: Amit.Sagpariya
2 Replies
6. Solaris
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)
Discussion started by: jegaraman
2 Replies
7. AIX
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
pmdapmid
PMDAPMID(3) Library Functions Manual PMDAPMID(3)
NAME
pmdaPMID - translate a dynamic performance metric name into a PMID
C SYNOPSIS
#include <pcp/pmapi.h>
#include <pcp/impl.h>
#include <pcp/pmda.h>
int pmdaPMID(char *name, pmID *pmid, pmdaExt *pmda);
cc ... -lpcp_pmda -lpcp
DESCRIPTION
As part of the Performance Metrics Domain Agent (PMDA) API (see PMDA(3)), pmdaPMID is the generic callback for translating a dynamic metric
name into a PMID (pmid).
Because implementing dynamic performance metrics requires specific PMDA support, and the facility is an optional component of a PMDA (most
PMDAs do not support dynamic performance metrics), pmdaPMID is a skeleton implementation that returns PM_ERR_NAME.
A PMDA that supports dynamic performance metrics will provide a private callback that replaces pmdaPMID (by assignment to version.four.pmid
of the pmdaInterface structure) and implements the translation from a dynamic performance metric name into the associated pmid.
DIAGNOSTICS
pmdaPMID returns PM_ERR_NAME if the name is not recognized or cannot be translated, else returns 0.
CAVEAT
The PMDA must be using PMDA_PROTOCOL_4 or later, as specified in the call to pmdaDSO(3) or pmdaDaemon(3).
SEE ALSO
PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3), pmdaMain(3) and pmLookupName(3).
Performance Co-Pilot PCP PMDAPMID(3)