Questions tagged [atop]
Atop is an ASCII full-screen performance monitor that is capable of reporting the activity of all processes (even if processes have finished during the interval), daily logging of system and process activity for long-term analysis, highlighting overloaded system resources by using colors, etc.
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atop is not logging daily
I installed atop on Rocky 9 to monitor CPU spike issues. On 2/8/2024 (2 days ago) I enabled and started atop:
systemctl enable atop
systemctl start atop
Thus, a file was created in /var/log/atop ...
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Persistent atop across reboots
atop shows total CPU time since the last reboot. How can I have it persist across reboots?
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When using atop as a systemd service it only runs and logs to file once
I am on CentOS 7 and using atop v2.6.0
If I run atop manually with the following command everything runs as expected and the log is written to every 10 seconds:
/usr/bin/atop -w /var/log/atop/...
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How to completely stop atop from creating logs for good?
I've installed atop on a orangePi/RaspberryPi with only 40MB for /var/log.
It quickly filled my partition to 100%, I then purged it apt purge atop to remove it and its configuration files.
atop ...
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What are "shrss" / "shswp" in atop?
From atop manual (official):
MEM - Memory occupation.
This line contains the total amount of physical memory (tot), [...] the resident size of shared memory including tmpfs
(shmem), the ...
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atop died with exit status 53
I was running atop. It was working, but later it died with exit status 53.
$ atop
$ echo $?
53
Is this a bug in atop? Or is my system failing?
Pre-emptive extra details :-)
I checked in the ...
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atop shows `swout` (swapping) when I have gigabytes of free memory. Why?
Why did atop show that I was swapping out over 20,000 pages - over 80 megabytes - when I had gigabytes of free memory?
I have not noticed a performance problem with this. I simply wish to take the ...
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`dd` is running at full speed, but I only see 20% disk utilization. Why?
sudo dd if=/dev/sda of=/dev/null bs=1M iflag=direct
atopsar -d 5 # in a second terminal
top # in a third terminal
Results from atopsar :
19:18:32 disk busy read/s KB/read ...
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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, ...
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`systemctl status atop` shows it has failed, but there is no error message
I installed atop, and then immediately upgraded from Fedora 29 to Fedora 30.
Now atop failed to start during boot. But there is no error message. It only shows that atop exited with code 7. Why ...
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Possible limiting factor during upgrade of Fedora VM - not disk or cpu or network? [duplicate]
I'm upgrading a VM from Fedora 29 to Fedora 30. I triggered the update from inside GNOME Software. It downloaded the upgrade, and asked to reboot. It started installing...
atop shows the qemu ...
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How to read several days log files when use `atopsar`?
My system is centos 7.4 with atop-2.3.0-8.el7.x86_64.
I already have 3 days log in var/log/atop, such as atop_20190312 atop_20190313 atop_20190314.
I want to find out the peak period of CPU ...
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Why does atop open a raw socket?
I install atop on Debian 9. It runs as a monitoring daemon.
Why is it listening on a raw socket? Raw sockets are used to generate arbitrary IPv4 packets or capture all packets read all packets for ...
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Writeback cache (`dirty`) seems to be limited to even less than dirty_background_ratio. What is it being limited by? How is this limit calculated?
I have been testing Linux 4.18.16-200.fc28.x86_64. My system has 7.7G total RAM, according to free -h.
I have default values for the vm.dirty* sysctl's. dirty_background_ratio is 10, and ...
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atop shows queue depth is higher than maximum
In my atop logs, I see avq ("average queue depth") over 600. This is on an LVM Logical Volume (LV). Both the LV and the physical volume have nr_requests (maximum queue depth) of 128.
(Note, to see ...
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