| 2007-11-01 20:24:39 |
Ohad Lutzky |
bug |
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added bug |
| 2007-12-23 06:04:10 |
lcampagn |
linux-meta: status |
New |
Confirmed |
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| 2009-06-02 19:26:43 |
Andy Whitcroft |
affects |
linux-meta (Ubuntu) |
linux (Ubuntu) |
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| 2009-08-17 00:58:50 |
Rocko |
bug watch added |
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http://bugzilla.kernel.org/show_bug.cgi?id=13205 |
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| 2010-11-15 00:58:54 |
Nuno Sucena Almeida |
bug |
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added subscriber Nuno Sucena Almeida |
| 2011-04-22 19:46:08 |
Uhurusurfa |
bug |
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added subscriber Uhurusurfa |
| 2011-05-26 08:59:37 |
adam jvok |
bug |
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added subscriber adam jvok |
| 2011-06-08 15:14:15 |
Simon Wenner |
bug |
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added subscriber Simon Wenner |
| 2012-04-15 02:55:57 |
penalvch |
linux (Ubuntu): status |
Confirmed |
Incomplete |
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| 2012-04-15 02:56:18 |
penalvch |
tags |
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dapper needs-upstream-testing |
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| 2012-04-15 02:56:40 |
penalvch |
description |
I run a batch matlab job server here at my lab, running Dapper 6.06 (for the LTS). One of the users has submitted a very memory-consuming job, which successfully crashes the server. Upon closer inspection, the crash happens like this:
1. I run matlab with the given file (as an ordinary, unpriveleged user)
2. RAM usage quickly fills up
3. Once the RAM meter hits 100%, the system freezes: All SSH connections freeze up, and while switching VTs directly on the machine works, no new processes run - so one can't log in, or do anything if he is logged in. (Sometimes typing doesn't work at all)
Note that the swap - while 7 gigs of it are available - is never used. (The machine has 7 gigs of RAM as well)
I've tried the same on my Gutsy 32-bit box, and there was no system freezeup - matlab simply notified that the system was out of memory. However, it did this once memory was 100% in use - and still, swap didn't get used at all! (Though it is mounted correctly and shows up in "top" and "free").
So first thing's first - I'd like to eliminate the crash issue. I suppose I could switch the server to 32-bit, but I think that would be a performance loss, considering that it does a lot of heavy computation. There is no reason, however, that this should happen on a 64-bit machine anyway. Why does it?
The second concerning thing is swap - how come it doesn't get used? |
I run a batch matlab job server here at my lab, running Dapper 6.06 (for the LTS). One of the users has submitted a very memory-consuming job, which successfully crashes the server. Upon closer inspection, the crash happens like this:
1. I run matlab with the given file (as an ordinary, unpriveleged user)
2. RAM usage quickly fills up
3. Once the RAM meter hits 100%, the system freezes: All SSH connections freeze up, and while switching VTs directly on the machine works, no new processes run - so one can't log in, or do anything if he is logged in. (Sometimes typing doesn't work at all)
Note that the swap - while 7 gigs of it are available - is never used. (The machine has 7 gigs of RAM as well)
I've tried the same on my Gutsy 32-bit box, and there was no system freezeup - matlab simply notified that the system was out of memory. However, it did this once memory was 100% in use - and still, swap didn't get used at all! (Though it is mounted correctly and shows up in "top" and "free").
So first thing's first - I'd like to eliminate the crash issue. I suppose I could switch the server to 32-bit, but I think that would be a performance loss, considering that it does a lot of heavy computation. There is no reason, however, that this should happen on a 64-bit machine anyway. Why does it?
WORKAROUND: Enabling DMA in the BIOS |
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| 2012-06-29 13:22:32 |
pityka |
bug |
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added subscriber pityka |
| 2012-07-12 10:29:53 |
Lesmana Zimmer |
bug |
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added subscriber Lesmana Zimmer |
| 2012-07-31 01:45:00 |
Helio Tadao Goto |
bug |
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added subscriber Helio Tadao Goto |
| 2012-07-31 13:48:55 |
NickNackGus |
linux (Ubuntu): status |
Incomplete |
Confirmed |
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| 2012-07-31 14:00:12 |
NickNackGus |
attachment added |
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typical RAM and swap usage https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/+attachment/3243704/+files/Screenshot.png |
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| 2012-07-31 14:40:51 |
penalvch |
linux (Ubuntu): status |
Confirmed |
Incomplete |
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| 2012-07-31 14:40:58 |
penalvch |
attachment removed |
typical RAM and swap usage https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/+attachment/3243704/+files/Screenshot.png |
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| 2012-07-31 14:59:11 |
Uhurusurfa |
removed subscriber Uhurusurfa |
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| 2012-09-21 04:53:03 |
Mark Russell |
bug |
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added subscriber Mark Russell |
| 2013-01-14 17:15:02 |
jarondl |
bug |
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added subscriber jarondl |
| 2013-04-29 14:58:43 |
Moses Gingerich |
bug |
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added subscriber Moses Gingerich |
| 2014-01-18 14:26:46 |
Mariusz Szczepańczyk |
bug |
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added subscriber Mariusz Szczepańczyk |
| 2014-10-16 21:14:15 |
Mike Udall |
removed subscriber Mike Udall |
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| 2015-02-12 10:18:04 |
Wim |
bug |
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added subscriber Wim |
| 2015-10-10 12:14:29 |
yas |
bug |
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added subscriber yas |
| 2015-10-10 18:30:34 |
penalvch |
linux (Ubuntu): importance |
Undecided |
Low |
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| 2015-10-10 19:33:53 |
lcampagn |
removed subscriber lcampagn |
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| 2015-10-16 01:13:25 |
penalvch |
bug |
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added subscriber h |
| 2016-03-09 21:19:18 |
penalvch |
bug |
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added subscriber Cossio |
| 2016-04-24 23:30:24 |
penalvch |
bug |
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added subscriber marco |
| 2016-05-18 15:29:04 |
Ivan |
bug |
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added subscriber Ivan |
| 2016-06-17 14:59:21 |
pmelix |
bug |
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added subscriber pmelix |
| 2016-08-14 07:54:25 |
Mikko Rytkönen |
bug |
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added subscriber Mikko Rytkönen |
| 2017-04-17 18:50:16 |
Mark Russell |
removed subscriber Mark Russell |
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| 2017-09-27 00:20:48 |
insp |
bug |
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added subscriber insp |
| 2017-10-20 17:03:55 |
Jan Niklas Hasse |
bug |
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added subscriber Jan Niklas Hasse |
| 2017-12-03 22:29:21 |
Danil Antonov |
bug |
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added subscriber Danil Antonov |
| 2018-01-16 04:56:45 |
mostafa741 |
information type |
Public |
Public Security |
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| 2018-01-16 04:56:47 |
mostafa741 |
information type |
Public Security |
Private Security |
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| 2018-01-16 04:56:58 |
mostafa741 |
information type |
Private Security |
Public |
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| 2018-01-16 21:22:05 |
Mihai b |
linux (Ubuntu): status |
Incomplete |
Confirmed |
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| 2018-01-19 12:58:20 |
mikkk |
bug |
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added subscriber mikkk |
| 2018-02-01 14:34:27 |
Tomi Kyöstilä |
bug |
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added subscriber Tomi Kyöstilä |
| 2018-02-01 23:48:59 |
William Yam |
bug |
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added subscriber William Yam |
| 2018-02-05 23:46:12 |
Iiridayn |
bug task added |
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linux (Arch Linux) |
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| 2018-03-10 17:06:36 |
cm |
bug |
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added subscriber cm |
| 2018-03-16 13:24:33 |
Vitaly Karpenko |
bug |
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added subscriber Vitaly Karpenko |
| 2018-03-27 20:08:30 |
Mariusz Szczepańczyk |
removed subscriber Mariusz Szczepańczyk |
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| 2018-03-29 08:26:12 |
Lancillotto |
attachment added |
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mem-eater https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/+attachment/5094516/+files/mem-eater |
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| 2018-04-02 01:56:14 |
Daniel Aleksandersen |
bug watch added |
|
https://bugzilla.redhat.com/show_bug.cgi?id=1472336 |
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| 2018-04-02 01:56:14 |
Daniel Aleksandersen |
bug task added |
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fedora |
|
| 2018-04-02 02:37:43 |
Bug Watch Updater |
fedora: status |
Unknown |
Confirmed |
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| 2018-04-02 02:37:43 |
Bug Watch Updater |
fedora: importance |
Unknown |
Medium |
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| 2018-04-02 02:37:47 |
Bug Watch Updater |
bug watch added |
|
https://bugzilla.redhat.com/show_bug.cgi?id=1357032 |
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| 2018-05-29 18:29:42 |
Bug Watch Updater |
fedora: status |
Confirmed |
Won't Fix |
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| 2018-06-07 17:57:59 |
tlc |
bug |
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added subscriber tlc |
| 2018-06-13 04:14:01 |
Denis Kalinin |
bug |
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added subscriber Denis Kalinin |
| 2018-06-30 21:31:38 |
penalvch |
summary |
System freeze on high memory usage |
System freeze on high memory usage when DMA is disabled |
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| 2018-06-30 21:31:43 |
penalvch |
bug task deleted |
linux (Ubuntu) |
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| 2018-06-30 21:31:57 |
Launchpad Janitor |
linux (Ubuntu): status |
New |
Confirmed |
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| 2018-06-30 21:31:57 |
penalvch |
affects |
linux (Arch Linux) |
linux (Ubuntu) |
|
| 2018-06-30 21:31:57 |
penalvch |
linux (Ubuntu): status |
New |
Incomplete |
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| 2018-06-30 21:32:08 |
penalvch |
bug task deleted |
linux (Ubuntu) |
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| 2018-06-30 21:32:22 |
penalvch |
affects |
fedora |
ubuntu |
|
| 2018-06-30 21:32:22 |
penalvch |
ubuntu: importance |
Medium |
Undecided |
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| 2018-06-30 21:32:22 |
penalvch |
ubuntu: status |
Won't Fix |
New |
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| 2018-06-30 21:32:22 |
penalvch |
ubuntu: remote watch |
Red Hat Bugzilla #1472336 |
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| 2018-06-30 21:32:38 |
penalvch |
ubuntu: importance |
Undecided |
Low |
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| 2018-06-30 21:32:38 |
penalvch |
ubuntu: status |
New |
Incomplete |
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| 2018-06-30 21:32:48 |
penalvch |
affects |
ubuntu |
linux (Ubuntu) |
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| 2018-06-30 21:33:09 |
penalvch |
bug |
|
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added subscriber jecks |
| 2018-07-01 06:51:55 |
Tobias Hangleiter |
removed subscriber Tobias Hangleiter |
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| 2018-08-31 14:04:15 |
kd4ua506I9uzkaa |
attachment added |
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le9b.patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/+attachment/5183022/+files/le9b.patch |
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| 2018-08-31 16:22:14 |
Ubuntu Foundations Team Bug Bot |
tags |
dapper needs-upstream-testing |
dapper needs-upstream-testing patch |
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| 2018-08-31 16:22:15 |
Ubuntu Foundations Team Bug Bot |
bug |
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added subscriber Joseph Salisbury |
| 2018-08-31 16:55:58 |
Vitaly Karpenko |
removed subscriber Vitaly Karpenko |
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| 2018-09-01 01:00:56 |
penalvch |
summary |
System freeze on high memory usage when DMA is disabled |
When DMA is disabled system freeze on high memory usage |
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| 2018-09-01 01:01:09 |
penalvch |
tags |
dapper needs-upstream-testing patch |
dapper needs-upstream-testing |
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| 2018-09-23 09:20:59 |
kd4ua506I9uzkaa |
attachment added |
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le9d.patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/+attachment/5191960/+files/le9d.patch |
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| 2018-09-23 12:21:54 |
Ubuntu Foundations Team Bug Bot |
tags |
dapper needs-upstream-testing |
dapper needs-upstream-testing patch |
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| 2018-09-24 19:47:16 |
lou |
bug watch added |
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https://bugzilla.redhat.com/show_bug.cgi?id=1577528 |
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| 2018-10-02 04:17:17 |
Samuel Leslie |
bug |
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added subscriber Samuel Leslie |
| 2018-12-24 17:25:05 |
Simon May |
bug |
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added subscriber Simon May |
| 2019-01-18 13:37:51 |
chernuubyl |
bug |
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added subscriber schertudi |
| 2019-01-18 15:31:07 |
Alfonso |
bug task added |
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linux (Arch Linux) |
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| 2019-01-19 17:11:43 |
Joseph Salisbury |
removed subscriber Joseph Salisbury |
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| 2019-02-14 11:38:01 |
Cachapa |
bug |
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added subscriber Cachapa |
| 2019-02-14 14:09:30 |
Lena Wildervanck |
bug |
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added subscriber Tijmen Wildervanck |
| 2019-02-28 23:53:11 |
Keith Hutton |
bug |
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added subscriber Keith Hutton |
| 2019-04-06 18:30:42 |
h |
removed subscriber h |
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| 2019-07-24 21:19:18 |
Brad Figg |
tags |
dapper needs-upstream-testing patch |
cscc dapper needs-upstream-testing patch |
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| 2019-09-25 23:24:56 |
kd4ua506I9uzkaa |
attachment added |
|
keep Active(file) above certain threshold to avoid constant disk reading when memory pressure https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/+attachment/5291340/+files/le9h.patch |
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| 2019-09-26 00:22:00 |
Ubuntu Foundations Team Bug Bot |
bug |
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added subscriber Terry Rudd |
| 2020-04-13 14:57:17 |
Balázs Orbán |
bug |
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added subscriber Balázs Orbán |
| 2020-09-23 13:18:38 |
gmc |
bug |
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added subscriber gmc |
| 2020-10-24 02:03:25 |
Jan Larres |
bug |
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added subscriber Jan Larres |
| 2021-02-28 07:07:15 |
Mikko Rytkönen |
removed subscriber Mikko Rytkönen |
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| 2021-05-07 05:36:50 |
Saptarshi Roy |
bug |
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added subscriber Saptarshi Roy |
| 2021-07-01 19:08:55 |
Mihai Capotă |
bug |
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added subscriber Mihai Capotă |
| 2022-01-09 09:53:09 |
codywohlers |
bug |
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added subscriber codywohlers |
| 2022-04-22 05:52:36 |
Dennis Schridde |
bug task added |
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gentoo |
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| 2022-04-22 05:53:07 |
Dennis Schridde |
bug |
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added subscriber Dennis Schridde |
