10 More Discussions You Might Find Interesting
1. Solaris
Hi,
Recently from the vmstat output in the image attached, the first line of the cpu idle column shows a value of 15. Although the subsequent values show higher than 90, is there a reason why the first value is so low?
Is this a problem?
Thanks. (4 Replies)
Discussion started by: anaigini45
4 Replies
2. Linux
I m checking idle time using vmstat, below are the results
var=$(ssh wmtmgr@$hostname vmstat | tail -1 | awk '{print $15}')
89
and now im subtracting 89 with 100 & im getting expected results
expr 100 - $var
11
Now How can I get the result 11 in one line code? (4 Replies)
Discussion started by: sam@sam
4 Replies
3. UNIX for Dummies Questions & Answers
Hi,
Users are reporting performance issue on my Sun Solaris 10 server. I am on the server. I don't see a issue or I might be looking at the wrong thing. Please help.
I don't see anything on sar. it's all zero on that. Not sure why users are reporting high CPU and unresponsive at times. ... (1 Reply)
Discussion started by: samnyc
1 Replies
4. Solaris
Hi,
I am porting a piece of code from Solaris to Linux. Code uses VMSTAT command.
On Solaris machine VMSTAT output is following:
uname -a:
SunOS rgsm01 5.9 Generic_118558-03 sun4u sparc SUNW,Sun-Fire-V440
vmstat:
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr m1 m2... (3 Replies)
Discussion started by: Basant Mishra
3 Replies
5. AIX
Hi AIX Expert,
the fr (page freed/page replacement) and sr (pages scanned by page-replacement algorithm) values from the vmstat output (see below please) are very high. I usually see this high value during the oracle database backup. In addition, the page scan/page steal/ page faults values... (7 Replies)
Discussion started by: Beginer0705
7 Replies
6. Solaris
Hi all.
I need some assistance with my vmstat output.
We have several oracle db's running on our solaris machine:
SunOS rcworaprd 5.9 Generic_112233-07 sun4u sparc SUNW,Sun-Fire-480R
Recently I bumped up our main Oracle database to use 6 GB instead of 4 GB as vmstat output was showing... (1 Reply)
Discussion started by: jamie_collins
1 Replies
7. AIX
Hello everybody, When i run Nmon the output is really incomprehensible
vmstat 5
System configuration: lcpu=16 mem=24576MB ent=4.00
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------------------... (3 Replies)
Discussion started by: Vit0_Corleone
3 Replies
8. UNIX for Advanced & Expert Users
Hello,
I'm seeing this problem with vmstat, where the first line of output always has the same CPU statistics. For example:
neked@nekedmachine:~$ date && vmstat
Fri Jul 24 06:57:08 EDT 2009
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd ... (0 Replies)
Discussion started by: neked
0 Replies
9. Shell Programming and Scripting
I need to capture the vmstat output of a server every 5 minutes, in a text filename with the name in the format vmoutput. yesterday's date.txt. I need to get the vmstat o/p for the whole day with 5 minutes interval and send it (preferably ftp) to my local desktop folder.
eg: vmstat 300... (1 Reply)
Discussion started by: yuvanash
1 Replies
10. UNIX for Dummies Questions & Answers
Hello all
This is a sample vmstat output ...
$ vmstat 2 2
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr hx hx hx hx in sy cs us sy id
1 0 0 23105784 7810488 323 767 1742 5 5 0 0 0 0 0 0 683 780 457 43 ... (9 Replies)
Discussion started by: luft
9 Replies
vmstat(1) General Commands Manual vmstat(1)
NAME
vmstat - report virtual memory statistics
SYNOPSIS
[interval [count]]
| |
DESCRIPTION
The command reports certain statistics kept about process, virtual memory, trap, and CPU activity. It also can clear the accumulators in
the kernel structure.
Options
recognizes the following options:
Report disk transfer information as a separate section,
in the form of transfers per second.
Provide an output format
that is more easily viewed on an 80-column display device. This format separates the default output into two groups: vir-
tual memory information and CPU data. Each group is displayed as a separate line of output. On multiprocessor systems,
this display format also provides CPU utilization on a per CPU basis for the active processors.
Report the number of processes swapped in and out
and instead of page reclaims and address translation faults and
interval Display successive lines which are summaries over the last interval seconds. The first line reported is for the time
since a reboot and each subsequent line is for the last interval only. If interval is zero, the output is displayed once
only. If the option is specified, the column headers are repeated. If is omitted, the column headers are not repeated.
The command prints what the system is doing every five seconds. This is a good choice of printing interval since this is
how often some of the statistics are sampled in the system; others vary every second.
count Repeat the summary statistics count times. If count is omitted or zero, the output is repeated until an interrupt or quit
signal is received. From the terminal, these are commonly and respectively (see stty(1)).
Report on the number of forks
and the number of pages of virtual memory involved since boot-up.
Print the total number of several kinds of paging-related events
from the kernel structure that have occurred since boot-up or since was last executed with the option.
Clear all accumulators in the kernel
structure. This option is restricted to the super user.
If none of these options is given, displays a one-line summary of the virtual memory activity since boot-up or since the option was last
executed.
Column Descriptions
The column headings and the meaning of each column are:
Information about numbers of processes in various states.
In run queue
Blocked for resources (I/O, paging, etc.)
Runnable or short sleeper (< 20 secs) but swapped
Information about the usage of virtual and real memory.
Virtual pages are considered active if they belong to processes that are running or have run in the last 20 seconds.
Active virtual pages
Size of the free list
Information about page faults and paging activity.
These are averaged each five seconds, and given in units per second.
Page reclaims (without
Address translation faults (without
Processes swapped in (with
Processes swapped out (with
Pages paged in
Pages paged out
Pages freed per second
Anticipated short term memory shortfall
Pages scanned by clock algorithm, per second
Trap/interrupt rate averages per second over last 5 seconds.
Device interrupts per second (nonclock)
System calls per second
CPU context switch rate (switches/sec)
Breakdown of percentage usage of CPU time for the active processors
User time for normal and low priority processes
System time
CPU idle
EXAMPLES
The following examples show the output for various command options. For formatting purposes, some leading blanks have been deleted.
1. Display the default output.
2. Add the disk tranfer information to the default output.
3. Display the default output in 80-column format.
4. Replace the page reclaims and address translation faults with process swapping in the default output.
5. Display the default output twice at five-second intervals. Note that the headers are repeated.
6. Display the default output twice in 80-column format at five-second intervals. Note that the headers are repeated.
7. Display the default output and disk transfers twice in 80-column format at five-second intervals. Note that the headers repeated.
8. Display the number of forks and pages of virtual memory since boot-up.
9. Display the counts of paging-related events.
WARNINGS
Users of must not rely on the exact field widths and spacing of its output, as these will vary depending on the system, the release of HP-
UX, and the data to be displayed.
AUTHOR
was developed by the University of California, Berkeley and HP.
SEE ALSO
iostat(1).
vmstat(1)