Submitted to Debian: https://salsa.debian.org/kernel-team/initramfs-
tools/-/merge_requests/114
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https://bugs.launchpad.net/bugs/2065180
Title:
performance regression in dracut-install
Results on a Pi 4B booting from SD card. Stock noble:
$ sudo hyperfine -r 5 "update-initramfs -u"
Benchmark 1: update-initramfs -u
Time (mean ± σ): 189.984 s ± 1.618 s[User: 75.720
Stock noble on a Raspberry Pi Zero 2W:
```
bdrung@zero3:~$ sudo hyperfine -r 5 "update-initramfs -u"
Benchmark 1: update-initramfs -u
Time (mean ± σ): 415.664 s ± 6.015 s[User: 166.728 s, System:
232.523 s]
Range (min … max): 409.139 s … 422.632 s5 runs
```
Replace duplicate
This bug was fixed in the package lvm2 - 2.03.16-3ubuntu4
---
lvm2 (2.03.16-3ubuntu4) oracular; urgency=medium
* initramfs-tools hook: Combine calls to manual_add_modules (LP:
#2065180)
-- Benjamin Drung Fri, 24 May 2024 09:42:08 +0200
** Changed in: lvm2 (Ubuntu)
This bug was fixed in the package thin-provisioning-tools -
0.9.0-2ubuntu6
---
thin-provisioning-tools (0.9.0-2ubuntu6) oracular; urgency=medium
* initramfs-hook: Combine calls to manual_add_modules (LP: #2065180)
-- Benjamin Drung Fri, 24 May 2024 09:08:36 +0200
** Changed
I marked thin-provisioning-tools, lvm2, and cryptsetup as affected to
reduce the number of manual_add_modules calls in the initramfs-tools
hooks in those packages. This will help a bit, but will probably not be
enough to make it fast again.
** Also affects: thin-provisioning-tools (Ubuntu)
** Changed in: dracut
Status: Unknown => New
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Title:
performance regression in dracut-install 060
To manage notifications about this bug
** Bug watch added: github.com/dracut-ng/dracut-ng/issues #316
https://github.com/dracut-ng/dracut-ng/issues/316
** Also affects: dracut via
https://github.com/dracut-ng/dracut-ng/issues/316
Importance: Unknown
Status: Unknown
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** Summary changed:
- performance regression in dracut-install
+ performance regression in dracut-install 060
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Title:
performance regression in
@viraniac well, you're absolutely right! Same SD card with a fresh noble
install, running on a Pi 4, first stock and second with a downgraded
dracut from mantic:
Pi 4B, stock -- 03:05
Pi 4B, downgrade -- 01:10
That is a pretty substantial regression, and diff'ing the initrds once
more showed
Dave Jones,
Could you please install dracut-install package from mantic on noble and
rerun your tests?
Link to dracut-install package from mantic -
http://ports.ubuntu.com/pool/main/d/dracut/dracut-
install_059-4ubuntu2_arm64.deb
I have noticed that installing the above package significantly
Some results from some local testing. These tests were all performed on
the same SD card (a Samsung EVO Select 64GB) with fresh installs of the
jammy and noble server images, after running full upgrades and
rebooting:
Pi 5, noble -- 01:23
Pi 4B, noble -- 03:05
Pi 3B+, noble -- 05:19
Pi 5,
** Patch added: "initramfs.diff"
https://bugs.launchpad.net/ubuntu/+source/dracut/+bug/2065180/+attachment/5776701/+files/initramfs.diff
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same issues on my arm devices.
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Title:
performance regression in dracut-install
To manage notifications about this bug go to:
I have tested ubuntu server images on Khadas VIM4 and Raspberry Pi 4B
2GB variant.
VIM4
Jammy - 22s
Mantic - 21s
Noble - 1m 30s
RPi 4B
Mantic - 1m 50s
Noble - 3m 55s
I don't have a amd64 system to test ubuntu on at the moment.
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dracut-install is used in initramfs-tools to speed up the build time.
I tested `time update-initramfs -u` in chroots on my amd64 laptop.
Results there:
* jammy: 15.585s
* mantic: 5.925s
* noble: 6.466s
So noble is a bit slower than mantic on my hardware. Is this slowdown
hardware related or are
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