lordan lordanov, as per
http://www.supermicro.com/support/resources/results.aspx an update is
available for your BIOS (R 3.0b). If you update to this, does it change
anything?
If not, could you please both specify what happened, and provide the output of
the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
Thank you for your understanding.
** Tags added: bios-outdated-r3.0b needs-upstream-testing regression-
potential
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1098342
Title:
out of memory errors when performing I/O on a system with large amount
of RAM and 32-bit pae kernel
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
We have a system with 64GB of RAM which we have to run with a 32-bit
installation for various reasons. When performing I/O on that system,
we suddenly get "Out of memory" errors, and if I/O is fast enough
(i.e. cat /dev/zero > /dev/shm/somefile), the system becomes unusable
very quickly. The following list of example commands will cause an OOM
condition at various speeds:
# Causes OOM and complete denial of service within 10-15 seconds:
cat /dev/zero > /dev/shm/somefile
# Causes OOM and complete denial of service within 30 - 40 seconds:
cat /dev/zero > /dev/shm
# Causes sporadic OOM errors:
cat /dev/sda > /dev/sdb
The /dev/sda and /dev/sdb devices read and write sequentially at about
150MB/s.
The same error was reproduced with the newest upstream 32-bit pae
kernels from 12.10 (quantal) and 13.04 (raring). Also, the same was
reproduced with Debian Queeze 32-bit kernel (2.6.32) installed on
Ubuntu 12.04.
The error appears to be absent in 64-bit kernels (installed instead of
the 32-bit kernel on the same 32-bit Ubuntu 12.04 installation).
Please see attached an example of OOM and DoS that was caused with
"cat /dev/shm > /dev/shm/somefile" in the out_of_memory_errors.txt
attachment.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-35-generic-pae 3.2.0-35.55
ProcVersionSignature: Ubuntu 3.2.0-35.55-generic-pae 3.2.34
Uname: Linux 3.2.0-35-generic-pae i686
AlsaDevices:
total 0
crw-rw---T 1 root audio 116, 1 Jan 10 15:55 seq
crw-rw---T 1 root audio 116, 33 Jan 10 15:55 timer
AplayDevices: aplay: device_list:252: no soundcards found...
ApportVersion: 2.0.1-0ubuntu14
Architecture: i386
ArecordDevices: arecord: device_list:252: no soundcards found...
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211
not found.
CurrentDmesg:
[ 11.884916] NFSD: starting 90-second grace period
[ 18.448013] eth0: no IPv6 routers present
Date: Thu Jan 10 16:10:40 2013
IwConfig: Error: [Errno 2] No such file or directory
MachineType: Supermicro H8DGU
PciMultimedia:
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: root=/dev/sda1 ro
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.2.0-35-generic-pae N/A
linux-backports-modules-3.2.0-35-generic-pae N/A
linux-firmware 1.79.1
RfKill: Error: [Errno 2] No such file or directory
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 12/10/10
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.1
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: H8DGU
dmi.board.vendor: Supermicro
dmi.board.version: 1234567890
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 17
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 1234567890
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1.1:bd12/10/10:svnSupermicro:pnH8DGU:pvr1234567890:rvnSupermicro:rnH8DGU:rvr1234567890:cvnSupermicro:ct17:cvr1234567890:
dmi.product.name: H8DGU
dmi.product.version: 1234567890
dmi.sys.vendor: Supermicro
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