Different VMSTAT output on Linux and Solaris machines
Hi,
I am porting a piece of code from Solaris to Linux. Code uses VMSTAT command.
On Solaris machine VMSTAT output is following:
vmstat:
On Linux machine VMSTAT output is following:
vmstat
I want the paging information on linux.How can I get it?
Last edited by Scott; 07-13-2013 at 04:01 AM..
Reason: Code tags
i have 2 question about vmstat
1)
pin (pagein) output of vmstat is always zero for our system
what is the meaning of this?
(pout significantly changes depending on the running processes)
2)
sometimes react output
of vmstat is given in K like 44K
sometimes it is given without any unit... (1 Reply)
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)
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)
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)
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)
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)
hello,
I'm planning to do inventory of all our servers but this time it's more on physical. Meaning I would like to check all hardware connected to it (external only like storage, power support) including the count Would like to get perhaps its serial nr..(linux and solaris different servers... (2 Replies)
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)
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)
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
LEARN ABOUT DEBIAN
vmstat
VMSTAT(8) System Administration VMSTAT(8)NAME
vmstat - Report virtual memory statistics
SYNOPSIS
vmstat [options] [delay [count]]
DESCRIPTION
vmstat reports information about processes, memory, paging, block IO, traps, disks and cpu activity.
The first report produced gives averages since the last reboot. Additional reports give information on a sampling period of length delay.
The process and memory reports are instantaneous in either case.
OPTIONS
delay The delay between updates in seconds. If no delay is specified, only one report is printed with the average values since boot.
count Number of updates. In absence of count, when delay is defined, default is infinite.
-a, --active
Display active and inactive memory, given a 2.5.41 kernel or better.
-f, --forks
The -f switch displays the number of forks since boot. This includes the fork, vfork, and clone system calls, and is equivalent to
the total number of tasks created. Each process is represented by one or more tasks, depending on thread usage. This display does
not repeat.
-m, --slabs
Displays slabinfo.
-n, --one-header
Display the header only once rather than periodically.
-s, --stats
Displays a table of various event counters and memory statistics. This display does not repeat.
-d, --disk
Report disk statistics (2.5.70 or above required).
-D, --disk-sum
Report some summary statistics about disk activity.
-p, --partition device
Detailed statistics about partition (2.5.70 or above required).
-S, --unit character
Switches outputs between 1000 (k), 1024 (K), 1000000 (m), or 1048576 (M) bytes. Note this does not change the swap (si/so) or block
(bi/bo) fields.
-V, --version
Display version information and exit.
-h, --help
Display help and exit.
FIELD DESCRIPTION FOR VM MODE
Procs
r: The number of processes waiting for run time.
b: The number of processes in uninterruptible sleep.
Memory
swpd: the amount of virtual memory used.
free: the amount of idle memory.
buff: the amount of memory used as buffers.
cache: the amount of memory used as cache.
inact: the amount of inactive memory. (-a option)
active: the amount of active memory. (-a option)
Swap
si: Amount of memory swapped in from disk (/s).
so: Amount of memory swapped to disk (/s).
IO
bi: Blocks received from a block device (blocks/s).
bo: Blocks sent to a block device (blocks/s).
System
in: The number of interrupts per second, including the clock.
cs: The number of context switches per second.
CPU
These are percentages of total CPU time.
us: Time spent running non-kernel code. (user time, including nice time)
sy: Time spent running kernel code. (system time)
id: Time spent idle. Prior to Linux 2.5.41, this includes IO-wait time.
wa: Time spent waiting for IO. Prior to Linux 2.5.41, included in idle.
st: Time stolen from a virtual machine. Prior to Linux 2.6.11, unknown.
FIELD DESCRIPTION FOR DISK MODE
Reads
total: Total reads completed successfully
merged: grouped reads (resulting in one I/O)
sectors: Sectors read successfully
ms: milliseconds spent reading
Writes
total: Total writes completed successfully
merged: grouped writes (resulting in one I/O)
sectors: Sectors written successfully
ms: milliseconds spent writing
IO
cur: I/O in progress
s: seconds spent for I/O
FIELD DESCRIPTION FOR DISK PARTITION MODE
reads: Total number of reads issued to this partition
read sectors: Total read sectors for partition
writes : Total number of writes issued to this partition
requested writes: Total number of write requests made for partition
FIELD DESCRIPTION FOR SLAB MODE
cache: Cache name
num: Number of currently active objects
total: Total number of available objects
size: Size of each object
pages: Number of pages with at least one active object
NOTES
vmstat does not require special permissions.
These reports are intended to help identify system bottlenecks. Linux vmstat does not count itself as a running process.
All linux blocks are currently 1024 bytes. Old kernels may report blocks as 512 bytes, 2048 bytes, or 4096 bytes.
Since procps 3.1.9, vmstat lets you choose units (k, K, m, M). Default is K (1024 bytes) in the default mode.
vmstat uses slabinfo 1.1
FILES
/proc/meminfo
/proc/stat
/proc/*/stat
SEE ALSO free(1), iostat(1), mpstat(1), ps(1), sar(1), top(1)BUGS
Does not tabulate the block io per device or count the number of system calls.
AUTHORS
Written by Henry Ware <al172@yfn.ysu.edu>.
Fabian Frederick <ffrederick@users.sourceforge.net> (diskstat, slab, partitions...)
REPORTING BUGS
Please send bug reports to <procps@freelists.org>
procps-ng September 2011 VMSTAT(8)