Questions tagged [vmstat]
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25 questions
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Understanding `pgpgin` in `/proc/vmstat` as I/O Counters: Relationship with I/O Bandwidth Measurements
Hi Kernel I/O Experts,
I have a question regarding the pgpgin and pgpgout counters in /proc/vmstat, specifically focusing on pgpgin. I’ve been exploring performance monitoring tools like vmstat and ...
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Completely confused with vmstat
So, from what I've found, there are multiple versions of vmstat out there for various OSes like Linux, BSD, and Solaris. I'm referring to Linux's vmstat procps-ng 3.3.17 .
Now, to be more specific, ...
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In Linux what is the difference between swapping and paging? [duplicate]
I am trying to figure out what the difference is between paging and swapping on linux. My question mainly relates to the output vmstat gives you. Example:
$ vmstat -s
8022500 K total memory
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- 101
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Calculating Free Memory using kstat vs vmstat vs mdb
In attempting to calculate the free memory under Solaris 10, I noticed I get different results using vmstat versus kstat or mdb.
The basic commands:
/usr/bin/kstat -p unix::system_pages:freemem | cut -...
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Linux memory calculation and mearsure: what plus what equals to what?
I've read some articles about Linux memory management and understand (perhaps not proficient) the concept of free memory, available memory, swap, etc. But when I check with the following command:
cat /...
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What does pgalloc_(dma|dma32|normal|movable) in /proc/vmstat measure?
My /proc/vmstat contains the following rows:
pgalloc_dma 0
pgalloc_dma32 288126724
pgalloc_normal 33952724486
pgalloc_movable 0
I'm wondering what they are measurements of. Are they counters of the ...
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How to check memory utilization in solaris 11 machine?
May I know how to calculate total memory utilization and percent of a Solaris 11.3 machine?
Am I wrong in below calculation? or any other way?
memfree=$(vmstat 1 2 | awk '{print $5}' | tail -1)
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412
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How to remove the average from vmstat?
In the man vmstat there is the following explanation about the first line:
The first report produced gives averages since the last reboot.
Additional reports give information on a sampling period ...
- 519
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131
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vmstat - Threads Waiting for Runtime vs Load Average?
I've read in a few places now that "load average" shown in top, uptime, and other places is based on the "average length of run queue".
I'm looking at the first column in vmstat with the header r1 ...
- 10.8k
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How do I determine amount of resources that Docker host needs to provision to a container, by inspecting a running system?
My goal is to define container definitions("ContainerDefinitions") with appropriate memory size needed in RAM to launch the docker container.
For example, below code snippet for jenkins container(...
- 1,596
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what's the meaning of swpd in vmstat
I am using vmstat on my linux machine, and it shows
➜ ~ vmstat ...
- 11
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"One-shot" swapping activity monitoring
I am trying to monitor the swapping activity in a Linux Server in the last, say, 1, 5 or 15 minutes.
One way is to run vmstat and keep watching si and so counters during these intervals.
However how ...
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IO wait time is higher than disk utilization. Isn't this impossible? [duplicate]
I am trying to improve my understanding, following this (so far) unanswered question: Possible limiting factor during upgrade of Fedora VM - not disk or cpu or network?
I ran the following test load, ...
- 53.5k
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4
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Match the column heading and print the values of the column using awk
How to print column free using awk or sed command?
Depends on vmstat version column, free may change from column number 5 to something else.
bash-3.00$ vmstat 1 1|tail -2
r b w swap free re mf pi po ...
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CPU section in vmstat
The man page for vmstat states, for example for wa section, " time spent waiting for IO" but what is the unit of time? Is it in seconds?
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