10 More Discussions You Might Find Interesting
1. Programming
Oddities with gcc, 2.95.3 for the AMIGA and 4.2.1 for MY current OSX 10.14.1...
I am creating a basic calculator for the AMIGA ADE *NIX emulator in C as it does not have one.
Below are two very condensed snippets of which I have added the results inside the each code section.
IMPORTANT!... (11 Replies)
Discussion started by: wisecracker
11 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. Programming
I use a binary name (ie polo) it gets some parameter , so for debugging normally i do this :
i wrote script for watchdog my app (polo) and check every second if it's not running then start it , the problem is , if my app , remain in state of segmentation fault for a while (ie 15 ... (6 Replies)
Discussion started by: pooyair
6 Replies
4. Shell Programming and Scripting
I have searched in a variety of ways in a variety of places but have come up empty.
I would like to prepend a portion of a section header to each following line until the next section header. I have been using sed for most things up until now but I'd go for a solution in just about anything--... (7 Replies)
Discussion started by: pagrus
7 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. Shell Programming and Scripting
I have a list of Servers in no particular order as follows:
virtualMachines="IIBSBS IIBVICDMS01 IIBVICMA01"And I am generating some output from a pre-existing script that gives me the following (this is a sample output selection).
9/17/2010 8:00:05 PM: Normal backup using VDRBACKUPS... (2 Replies)
Discussion started by: jelloir
2 Replies
7. Linux
Hi everyone,
I need to see some VM manager performance/behavior information on some Linux boxes regarding pages scanned/activation of the paging algorithm in order to get an idea if a given server needs more memory and is actually paging. In Aix servers, by using the vmstat cmd you... (1 Reply)
Discussion started by: jcpetela
1 Replies
8. UNIX for Dummies Questions & Answers
Hi
I wanted to collect data by using vmstat -I 60 >xxxx.txt & using my own account
It was stopped by it self after 2 hours try again same result
We want to collect day date by succession how to collect data using vmstat for day
Thank you (2 Replies)
Discussion started by: Syed_45
2 Replies
9. UNIX for Dummies Questions & Answers
When I exeute vmstat (e.g. vmstat 30 2),
in some machines I get some wierd result as the first line.
like: -117% or 208% for CPU idle percentage.
But the second line is alright.
Could someone explain this please.
Thanks !
Chaadana (4 Replies)
Discussion started by: chaandana
4 Replies
10. UNIX for Advanced & Expert Users
How do you reset the values that vmstat displays?
Vmstat displays a running average from the last the system was restarted on the first line, how do you reset these values without restarting the system? (Solaris 8) (3 Replies)
Discussion started by: kuczerp
3 Replies
VMSTAT(1) General Commands Manual VMSTAT(1)
NAME
vmstat - report virtual memory statistics
SYNOPSIS
vmstat [ -fsi ] [ drives ] [ interval [ count ] ]
DESCRIPTION
Vmstat delves into the system and normally reports certain statistics kept about process, virtual memory, disk, trap and cpu activity. If
given a -f argument, it instead reports on the number of forks and vforks since system startup and the number of pages of virtual memory
involved in each kind of fork. If given a -s argument, it instead prints the contents of the sum structure, giving the total number of
several kinds of paging related events which have occurred since boot. If given a -i argument, it instead reports on the number of inter-
rupts taken by each device since system startup.
If none of these options are given, vmstat will report in the first line a summary of the virtual memory activity since the system has been
booted. If interval is specified, then successive lines are summaries over the last interval seconds. ``vmstat 5'' will print 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, running the output for a while will make it apparent which are recomputed every second. If a
count is given, the statistics are repeated count times. The format fields are:
Procs: information about numbers of processes in various states.
r in run queue
b blocked for resources (i/o, paging, etc.)
w runnable or short sleeper (< 20 secs) but swapped
Memory: information about the usage of virtual and real memory. Virtual pages are considered active if they belong to processes which are
running or have run in the last 20 seconds. A ``page'' here is 1024 bytes.
avm active virtual pages
fre size of the free list
Page: information about page faults and paging activity. These are averaged each five seconds, and given in units per second.
re page reclaims (simulating reference bits)
at pages attached (found in free list)
pi pages paged in
po pages paged out
fr pages freed per second
de anticipated short term memory shortfall
sr pages scanned by clock algorithm, per-second
up/hp/rk/ra: Disk operations per second (this field is system dependent). Typically paging will be split across several of the available
drives. The number under each of these is the unit number.
Faults: trap/interrupt rate averages per second over last 5 seconds.
in (non clock) device interrupts per second
sy system calls per second
cs cpu context switch rate (switches/sec)
Cpu: breakdown of percentage usage of CPU time
us user time for normal and low priority processes
sy system time
id cpu idle
If more than 4 disk drives are configured in the system, vmstat displays only the first 4 drives, with priority given to Massbus disk
drives (i.e. if both Unibus and Massbus drives are present and the total number of drives exceeds 4, then some number of Unibus drives will
not be displayed in favor of the Massbus drives). To force vmstat to display specific drives, their names may be supplied on the command
line.
FILES
/dev/kmem, /vmunix
SEE ALSO
systat(1), iostat(1)
The sections starting with ``Interpreting system activity'' in Installing and Operating 4.2bsd.
4th Berkeley Distribution March 15, 1986 VMSTAT(1)