FYI: I get same compilation problem also with linux-*-4.15.0-23-generic
from linux-generic-hwe-16.04-edge on my 32-bit 16.04 LTS!
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https://bugs.launchpad.net/bugs/1778097
@Christopher, sorry this is my main computer, so i cannot re-install
from scratch (also wouldn't really have the time for this and also lack
a separate disk). I assume, just running with old kernels probably
won't work given that they are reasonably old? (otherwise, can you point
me to a kernel
@Christopher. Sorry, can't answer that question: i never run anything
earlier than quantal on this hardware. On the previous laptop (thinkpad
w500) where i run many earlier versions of ubuntu (including quantal
for a few weeks) i did not notice that problem but then that laptop did
have only 8GB
# uname -a
Linux babbage2 3.15.0-031500rc5-generic #201405091635 SMP Fri May 9 20:57:05
UTC 2014 i686 i686 i686 GNU/Linux
unfortunately, problem still exists, e.g., after half a day apt-get
update takes minutes to update package list .. :-(
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# dmidecode -s bios-version ; dmidecode -s bios-release-date
G5ET98WW (2.58 )
04/01/2014
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https://bugs.launchpad.net/bugs/1290337
Title:
[Lenovo ThinkPad W530] I/O slow
fyi: problem also still exists after upgrading to 14.04 ( 3.13.0-24)
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https://bugs.launchpad.net/bugs/1290337
Title:
[Lenovo ThinkPad W530] I/O slow down
Status in
I'm already running with the 2.58 ever since i upgraded to 14.04 four
weeks ago. BTW: Given that the problem also appeared on quite different
hardware (bug 1107150) i doubt that it has anything to do with BIOS.
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yet another observation: yesterday i run all day with the standard 3.11
kernel with all 16GB RAM. At the end of the day i also got in the state
where apt-get update took minutes (tens of them). Interestingly, also,
the vm.cache_drop trick did not seem to have any speed-up effect on it.
Also note
@Joseph, thanks for the info and i could install v3.14-rc7-trusty
(although i had to switch from nvidia to integrated graphics as nvidia
didn't seem to work anymore).
The experience is somewhat mixed so far. In the half-day i'm running it
i haven't seen really bad behaviour (no multi-minute
@joseph: as i replied to a similar request of yours in bug 1107150
(comment 66), i can't find the PAE kernels, e.g., the
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-rc5-trusty/ you
point out does not seem to contain any PAE kernels (at least if still
the old naming conventions apply).
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Public bug reported:
Symptoms are that as time goes by I/O gets slower and slower (primarily if not
even only writes rather than reads).
It can be temporarily cured via /sbin/sysctl -w vm.drop_caches=2 and/or
/sbin/sysctl -w vm.drop_caches=3 but the problem will re-appear again sooner
btw: do not bother looking at the ``nox2apic
rcutree.rcu_idle_gp_delay=1'' boot options. i added them lately trying
to overcome some nvidia-related problems. The problem here exists when
these options were not specified ...
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Chris. Ok, so i opened a new Bug #1290337. Note though that i follow
this bug since several months and much of what was discussed here
(baring the outdated BIOS hypothesis) seemed to match what i saw on my
machine. So i am pretty convinced ``my'' bug is a duplicate of what
zaxx was originally
Chris, this problem occurs for lots of different hardware and BIOSes
(e.g., i have it on a ThinkPad W530 with uptodate BIOS); the bios-
outdated tag is rather misleading and is very unlikely to be related to
the problem?
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FYI: the same problem seems also still present in Saucy / kernel
3.11.0-12. Without lowering considerably the RAM at boot-time (e.g.,
12GB instead of built-in 16GB) I/O write performance is horrible (and
even with 12GB it does not seem right and deteriorates over time ...)
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