Bug#1002807: reportbug: Linux Debian AMD64 5.10.84-1: I/O Scheduler DEADLINE w/ Bad I/O Performance After Installation
Package: reportbug
Version: 7.10.3+deb11u1
Severity: important
X-Debbugs-Cc: jeffredbeard7@gmail.com
1) I prepared a USB flash drive with the newest net installation image (dd
if=/image.iso of=/dev/drive)
2) I restarted the physical (non-virtualized) computer and installed the
system. I noticed, I have not proof but I think, it took way longer than it
should have even from a USB 2.0 interface. By the way, the drive is a 3.0.
3) The system was near unusable. Any ordinary user would have not been able to
use the system.
4) I noticed the disk cache (using command line utility top) was not utilizing
hardly any memory.
5) I went under /sys/ and found the IO scheduler for the block devices was
DEADLINE. It only showed DEADLINE and NOP.
6) I think it might should have CFQ. I'm not an expert on this area.
7) I tweaked the tunables so writes had a 30 second goal and reads had a 5
second goal. I might have tweaked another parameter or two.
8) The system regained about 80% of the performance I would expect. I still
don't think it is running as well as it could.
Without the fixes the system would be a severe problem for any user to the
point they would not utilize the system.
Thank you for making such a great distribution!!! I have always used Debian. So
sorry for reporting the bug!
-- Package-specific info:
** Environment settings:
INTERFACE="gtk"
** /home/kmcguire/.reportbugrc:
reportbug_version "7.10.3+deb11u1"
mode novice
ui gtk
realname "jeff"
email "jeffredbeard7@gmail.com"
no-cc
list-cc-me
smtphost reportbug.debian.org
-- System Information:
Debian Release: 11.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 5.10.0-10-amd64 (SMP w/2 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages reportbug depends on:
ii apt 2.2.4
ii python3 3.9.2-3
ii python3-reportbug 7.10.3+deb11u1
ii sensible-utils 0.0.14
reportbug recommends no packages.
Versions of packages reportbug suggests:
pn claws-mail <none>
pn debconf-utils <none>
pn debsums <none>
pn default-mta | postfix | exim4 | mail-transport-agent <none>
pn dlocate <none>
pn emacs-bin-common <none>
ii file 1:5.39-3
ii gnupg 2.2.27-2
pn python3-urwid <none>
pn reportbug-gtk <none>
ii xdg-utils 1.1.3-4.1
Versions of packages python3-reportbug depends on:
ii apt 2.2.4
ii file 1:5.39-3
ii python3 3.9.2-3
ii python3-apt 2.2.1
ii python3-debian 0.1.39
ii python3-debianbts 3.1.0
ii python3-requests 2.25.1+dfsg-2
ii sensible-utils 0.0.14
python3-reportbug suggests no packages.
-- no debconf information
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