Questions tagged [iotop]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
14 views

How to list the I/O usage per disk?

Using iostat, I can get the processes that use up the disk and how much - but can't specify the disk iostat -o Using dstat, I can see usage per disk - but not the processes that use it. dstat -tdD ...
user avatar
  • 101
0 votes
1 answer
40 views

IOTOP complains: CONFIG_TASK_DELAY_ACCT not enabled in kernel

Looking about, I see that the standard fix is to add this to the kernel boot parameters. Using systemd-boot, my arch.conf looks like this : title Arch Linux linux /vmlinuz-linux initrd /intel-...
user avatar
1 vote
1 answer
114 views

why is iotop showing "?err"

when I run iotop, the second column "PRIO" shows ?err everywhere. What does this mean? I did not find any mention of err in the manual page. I am using custom compiled kernel. Could it be ...
user avatar
2 votes
0 answers
205 views

Process shows as 100% I/O bound while producing minimal disk activity, disk util is at 100%

We are having quite strange problem. There is a program (cryptocurrency node to be precise) which has local database of all the transactions ever made. Database is huge - around 15 TB. The problem is ...
user avatar
5 votes
3 answers
614 views

Why are processes blocked by I/O in case of heavy system load?

I have a workstation(2x Intel Xeon family CPUs and 128GiB of RAM) running several virtual machines and while the combined CPU usage is <30%, then the load average is between 20 and 25. For example, ...
user avatar
  • 6,378
-1 votes
1 answer
30 views

RAM bandwidth activity

I compile sources in /tmp mounted into RAM. I'd like to know fast it is! That's show/monitor I/O activity (MB/s) for this device. If I want to monitor HD bandwidth I would have used tools like iotop ...
user avatar
  • 2,528
6 votes
3 answers
6k views

Why does a gunzip to dd pipeline slow down at the end?

my command: gunzip -c serial2udp.image.gz | sudo dd of=/dev/mmcblk0 conv=fsync,notrunc status=progress bs=4M my output: 15930949632 bytes (16 GB, 15 GiB) copied, 1049 s, 15.2 MB/s 0+331128 ...
user avatar
  • 81
1 vote
1 answer
1k views

How to see an average of I/O of disk with iotop command?

With iotop -o command I can see the write and read speed of the disk per second. But it varies a lot, from 0 to high values. I'd like to see an average of it per minute or per 10 seconds. How can I ...
user avatar
16 votes
2 answers
8k views

Error with command iotop on CentOS

When using sudo iotop (latest version 0.6-2.el7) in a terminal in my newly installed CentOS 7.5, I get the following error message: Traceback (most recent call last): File "/sbin/iotop", line 17, ...
user avatar
  • 263