This fix appears to have corrected the problem, at least for me. I no
longer see the CPU at 100% when I log in after a major software upgrade.
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sreadahead uses 100 % of the CPU in Karmic
https://bugs.launchpad.net/bugs/421116
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** Branch linked: lp:ubuntu/sreadahead
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sreadahead uses 100 % of the CPU in Karmic
https://bugs.launchpad.net/bugs/421116
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This bug was fixed in the package sreadahead - 1.0-4
---
sreadahead (1.0-4) karmic; urgency=low
* Replace custom bubble sort with qsort(), to avoid using 100% CPU
for a long time after boot. LP: #421116, #434116.
-- Anders KaseorgSun, 20 Sep 2009 13:31:45 -0400
** Change
I have uploaded the fix for this bug, however due to the freeze it may
take a little while to show up, so I've also uploaded it to the ubuntu-
boot PPA. Please test.
** Changed in: sreadahead (Ubuntu Karmic)
Status: In Progress => Fix Committed
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sreadahead uses 100 % of the CPU in Karm
** Changed in: sreadahead (Ubuntu Karmic)
Milestone: None => ubuntu-9.10
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sreadahead uses 100 % of the CPU in Karmic
https://bugs.launchpad.net/bugs/421116
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** Changed in: sreadahead (Ubuntu Karmic)
Assignee: Anders Kaseorg (anders-kaseorg) => Scott James Remnant (scott)
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sreadahead uses 100 % of the CPU in Karmic
https://bugs.launchpad.net/bugs/421116
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Bugs, which is subscri
** Also affects: sreadahead (Ubuntu Karmic)
Importance: Undecided
Assignee: Anders Kaseorg (anders-kaseorg)
Status: In Progress
** Changed in: sreadahead (Ubuntu Karmic)
Importance: Undecided => Medium
** Tags added: ubuntu-boot
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sreadahead uses 100 % of the CPU in Karmic
ht
On Sun, 2009-09-20 at 17:52 +, Anders Kaseorg wrote:
> As it turns out, the 100% CPU time is spent bubble-sorting a list of
> readahead records. That’s idiotic. The C library comes with a standard
> qsort() function for a reason. This is easy to fix and we should do so.
>
Right, I'd looked
Patch: http://bazaar.launchpad.net/~anders-kaseorg/sreadahead/qsort/revision/44
Fixed packages: https://launchpad.net/~anders-kaseorg/+archive/ppa
** Changed in: sreadahead (Ubuntu)
Status: Confirmed => In Progress
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sreadahead uses 100 % of the CPU in Karmic
https://bugs.launchpad.net/
As it turns out, the 100% CPU time is spent bubble-sorting a list of
readahead records. That’s idiotic. The C library comes with a standard
qsort() function for a reason. This is easy to fix and we should do so.
** Changed in: sreadahead (Ubuntu)
Status: Won't Fix => Confirmed
** Change
On Thu, 2009-09-17 at 15:25 +, Steve Dodier wrote:
> Scott, is the intented behaviour of sreadahead to run only once, or
> after each reboot ? If it is meant to run only once as you said, then
> there definately is a problem, because it keeps running after the first
> one.
>
It will usually p
Scott, is the intented behaviour of sreadahead to run only once, or
after each reboot ? If it is meant to run only once as you said, then
there definately is a problem, because it keeps running after the first
one.
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sreadahead uses 100 % of the CPU in Karmic
https://bugs.launchpad.net/bugs/4211
I am seeing this on every reboot, not just the first. I just rebooted
twice in a row without doing any updates. The system had been running
smoothly overnight before the first reboot, then I let sreadahead finish
before rebooting again and it started up again. If this is considered
normal behavior
i can confirm this annoying behaviour in karmic64bit.
for some reason sreadahead keeps popping up after every reboot with 100%cpu for
10+ seconds. quite a nuisance.
(and yes, this wasn't the case before readahead was replaced by
sreadahead)
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sreadahead uses 100 % of the CPU in Karmic
https://
I have never interrupt it but after 27 reboots. it wasn't
improved...
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sreadahead uses 100 % of the CPU in Karmic
https://bugs.launchpad.net/bugs/421116
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u
This is quite normal, it takes a few minutes after the first boot to
generate the lists - it's operating as a "very low priority" so
shouldn't affect system performance.
If you don't let it finish, it will be slow every time you boot ;-)
** Changed in: sreadahead (Ubuntu)
Status: New => Wo
I can confirm this bug as I've seen the same behavior. After a fresh
boot, when I log in my CPU is running at 100% and the culprit is
sreadahead. sreadahead then exits after a minute or so. If you want,
you can disable sreadahead by editing the file at
/etc/init/sreadahead.conf and commenting ou
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