Abnormal memory usage of dom0 under Squeeze leading to crash
Hi,
We normally run Lenny dom0 with 384 MB of RAM in our production server.
But as we did few trials with Squeeze, I had the very bad finding that a
Squeeze dom0 requires at least 1024 MB of RAM. As soon as I do something
like "xm mem-set Domain-0 800", my server crashes: OOM starts killing
processes, starting with sshd, then mdadm and so on, then the server
reboots by itself. This enormous amount of RAM isn't normal at all, and
I am wondering what is happening.
If I sort processes by memory usage using top, what I can see is 2 xend
processes taking 1.0 and 1.5% of the RAM (out of 1024 MB). This doesn't
seem to be so much, and I don't understand. My server really shouldn't
behave like this! (we even used to run dom0 with 192 MB of RAM back when
we were using Xen 2.0.7 and sarge...) My concern isn't even the waste of
RAM, but a danger for the stability of the system. It just doesn't feel
right!
I have attached the output of dpkg -l, and my setup script is available
here:
wget
"http://git.gplhost.com/gitweb/?p=mgmt-scripts.git;a=blob_plain;f=scripts/dom0-postinstall-squeeze;hb=2c869ce9d729d80a687f1fbdbf0081e140152b44";
-O dom0-postinstall-squeeze
With both of the above, it's going to be easy to reproduce. As Squeeze
is said to be out in 3 days, it would be great to find out what's going
on and fix asap.
Does anyone have an idea of what's going on? I just don't get it...
Thomas Goirand (zigo)
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Description
+++-=======================================-===========================-======================================================================
ii acpi 1.5-2 displays information on ACPI devices
ii acpi-support-base 0.137-5 scripts for handling base ACPI events such as the power button
ii acpid 1:2.0.7-1 Advanced Configuration and Power Interface event daemon
ii adduser 3.112+nmu2 add and remove users and groups
ii apt 0.8.10.3 Advanced front-end for dpkg
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ii base-passwd 3.5.22 Debian base system master password and group files
ii bash 4.1-3 The GNU Bourne Again SHell
ii bcc 0.16.17-3.1 16-bit x86 C compiler
ii bin86 0.16.17-3.1 16-bit x86 assembler and loader
ii bind9utils 1:9.7.2.dfsg.P3-1.1 Utilities for BIND
ii binutils 2.20.1-16 The GNU assembler, linker and binary utilities
ii bridge-utils 1.4-5 Utilities for configuring the Linux Ethernet bridge
ii bsdmainutils 8.0.13 collection of more utilities from FreeBSD
ii bsdutils 1:2.17.2-9 Basic utilities from 4.4BSD-Lite
ii busybox 1:1.17.1-8 Tiny utilities for small and embedded systems
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ii console-terminus 4.30-2 Fixed-width fonts for fast reading on the Linux console
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ii discover-data 2.2010.10.18 Data lists for Discover hardware detection system
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ii gcc-4.4-base 4.4.5-8 The GNU Compiler Collection (base package)
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ii gettext-base 0.18.1.1-3 GNU Internationalization utilities for the base system
ii git 1:1.7.2.3-2.2 fast, scalable, distributed revision control system
ii gnupg 1.4.10-4 GNU privacy guard - a free PGP replacement
ii gpgv 1.4.10-4 GNU privacy guard - signature verification tool
ii grep 2.6.3-3 GNU grep, egrep and fgrep
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ii iptables 1.4.8-3 administration tools for packet filtering and NAT
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rc kbd 1.15.2-2 Linux console font and keytable utilities
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ii libbz2-1.0 1.0.5-6 high-quality block-sorting file compressor library - runtime
ii libc-bin 2.11.2-10 Embedded GNU C Library: Binaries
ii libc-dev-bin 2.11.2-10 Embedded GNU C Library: Development binaries
ii libc6 2.11.2-10 Embedded GNU C Library: Shared libraries
ii libc6-dev 2.11.2-10 Embedded GNU C Library: Development Libraries and Header Files
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ii libc6-i386 2.11.2-10 Embedded GNU C Library: 32-bit shared libraries for AMD64
ii libcaca-dev 0.99.beta17-1 development files for libcaca
ii libcaca0 0.99.beta17-1 colour ASCII art library
ii libcap-ng0 0.6.4-1 An alternate posix capabilities library
ii libcap2 1:2.19-3 support for getting/setting POSIX.1e capabilities
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ii libcwidget3 0.5.16-3 high-level terminal interface library for C++ (runtime files)
ii libdb4.7 4.7.25-9 Berkeley v4.7 Database Libraries [runtime]
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ii libdbus-1-dev 1.2.24-4 simple interprocess messaging system (development headers)
ii libdevmapper1.02.1 2:1.02.48-5 The Linux Kernel Device Mapper userspace library
ii libdirectfb-1.2-9 1.2.10.0-4 direct frame buffer graphics - shared libraries
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ii libdns69 1:9.7.2.dfsg.P3-1.1 DNS Shared Library used by BIND
ii libdrm2 2.4.21-1~squeeze3 Userspace interface to kernel DRM services -- runtime
ii libedit2 2.11-20080614-2 BSD editline and history libraries
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ii libjpeg62 6b1-1 The Independent JPEG Group's JPEG runtime library (version 6.2)
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ii libncurses5-dev 5.7+20100313-5 developer's libraries and docs for ncurses
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ii libpam-runtime 1.1.1-6.1 Runtime support for the PAM library
ii libpam0g 1.1.1-6.1 Pluggable Authentication Modules library
ii libpci-dev 1:3.1.7-6 Linux PCI Utilities (development files)
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ii libssh2-1 1.2.6-1 SSH2 client-side library
ii libssl0.9.8 0.9.8o-4 SSL shared libraries
ii libstdc++6 4.4.5-8 The GNU Standard C++ Library v3
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ii libunistring0 0.9.3-3 Unicode string library for C
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ii libxtst6 2:1.1.0-3 X11 Testing -- Record extension library
ii libxxf86vm1 1:1.1.0-2 X11 XFree86 video mode extension library
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ii linux-image-2.6-amd64 2.6.32+29 Linux 2.6 for 64-bit PCs (meta-package)
ii linux-image-2.6-xen-amd64 2.6.32+29 Linux 2.6 for 64-bit PCs (meta-package), Xen dom0 support
ii linux-image-2.6.32-5-amd64 2.6.32-30 Linux 2.6.32 for 64-bit PCs
ii linux-image-2.6.32-5-xen-amd64 2.6.32-30 Linux 2.6.32 for 64-bit PCs, Xen dom0 support
ii linux-libc-dev 2.6.32-30 Linux support headers for userspace development
ii locales 2.11.2-10 Embedded GNU C Library: National Language (locale) data [support]
ii login 1:4.1.4.2+svn3283-2 system login tools
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ii lsb-base 3.2-23.2squeeze1 Linux Standard Base 3.2 init script functionality
ii lvm2 2.02.66-5 The Linux Logical Volume Manager
ii make 3.81-8 An utility for Directing compilation.
ii man-db 2.5.7-8 on-line manual pager
ii manpages 3.27-1 Manual pages about using a GNU/Linux system
ii mawk 1.3.3-15 a pattern scanning and text processing language
ii mdadm 3.1.4-1+8efb9d1 tool to administer Linux MD arrays (software RAID)
ii mesa-common-dev 7.7.1-4 Developer documentation for Mesa
ii mime-support 3.48-1 MIME files 'mime.types' & 'mailcap', and support programs
ii module-init-tools 3.12-1 tools for managing Linux kernel modules
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ii mysql-common 5.1.49-3 MySQL database common files, e.g. /etc/mysql/my.cnf
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ii os-prober 1.42 utility to detect other OSes on a set of drives
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ii patch 2.6-2 Apply a diff file to an original
ii pciutils 1:3.1.7-6 Linux PCI Utilities
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ii perl-base 5.10.1-17 minimal Perl system
ii perl-modules 5.10.1-17 Core Perl modules
ii pkg-config 0.25-1.1 manage compile and link flags for libraries
ii popularity-contest 1.49 Vote for your favourite packages automatically
ii postfix 2.7.1-1 High-performance mail transport agent
ii procps 1:3.2.8-9 /proc file system utilities
ii python 2.6.6-3+squeeze5 interactive high-level object-oriented language (default version)
ii python-central 0.6.16+nmu1 register and build utility for Python packages
ii python-crypto 2.1.0-2 cryptographic algorithms and protocols for Python
ii python-minimal 2.6.6-3+squeeze5 minimal subset of the Python language (default version)
ii python-openssl 0.10-1 Python wrapper around the OpenSSL library
ii python-pkg-resources 0.6.14-4 Package Discovery and Resource Access using pkg_resources
ii python-pyasn1 0.0.11a-1 ASN.1 library for Python
ii python-support 1.0.10 automated rebuilding support for Python modules
ii python-twisted 10.1.0-3 Event-based framework for internet applications (transitional package)
ii python-twisted-bin 10.1.0-3 Event-based framework for internet applications
ii python-twisted-conch 1:10.1.0-1 The Twisted SSH Implementation
ii python-twisted-core 10.1.0-3 Event-based framework for internet applications
ii python-twisted-lore 10.1.0-1 Documentation generator with HTML and LaTeX support
ii python-twisted-mail 10.1.0-1 An SMTP, IMAP and POP protocol implementation
ii python-twisted-names 10.1.0-1 A DNS protocol implementation with client and server
ii python-twisted-news 10.1.0-1 An NNTP protocol implementation with client and server
ii python-twisted-runner 10.1.0-2 Process management, including an inetd server
ii python-twisted-web 10.1.0-1 An HTTP protocol implementation together with clients and servers
ii python-twisted-words 10.1.0-1 Chat and Instant Messaging
ii python-zope.interface 3.5.3-1+b1 Interfaces for Python
ii python2.5 2.5.5-11 An interactive high-level object-oriented language (version 2.5)
ii python2.5-minimal 2.5.5-11 A minimal subset of the Python language (version 2.5)
ii python2.6 2.6.6-8+b1 An interactive high-level object-oriented language (version 2.6)
ii python2.6-minimal 2.6.6-8+b1 A minimal subset of the Python language (version 2.6)
ii readline-common 6.1-3 GNU readline and history libraries, common files
ii rsyslog 4.6.4-2 enhanced multi-threaded syslogd
ii screen 4.0.3-14 terminal multiplexor with VT100/ANSI terminal emulation
ii sed 4.2.1-7 The GNU sed stream editor
ii sensible-utils 0.0.4 Utilities for sensible alternative selection
ii smartmontools 5.39.1+svn3124-2 control and monitor storage systems using S.M.A.R.T.
ii ssh 1:5.5p1-6 secure shell client and server (metapackage)
ii ssl-cert 1.0.28 simple debconf wrapper for OpenSSL
ii sudo 1.7.4p4-2.squeeze.1 Provide limited super user privileges to specific users
ii sysv-rc 2.88dsf-13.1 System-V-like runlevel change mechanism
ii sysvinit 2.88dsf-13.1 System-V-like init utilities
ii sysvinit-utils 2.88dsf-13.1 System-V-like utilities
ii tar 1.23-3 GNU version of the tar archiving utility
ii tasksel 2.88 Tool for selecting tasks for installation on Debian systems
ii tasksel-data 2.88 Official tasks used for installation of Debian systems
ii tcpd 7.6.q-19 Wietse Venema's TCP wrapper utilities
ii texinfo 4.13a.dfsg.1-6 Documentation system for on-line information and printed output
ii tgif 1:4.1.45-3 interactive 2-D drawing facility under X11
ii traceroute 1:2.0.15-1 Traces the route taken by packets over an IPv4/IPv6 network
ii transfig 1:3.2.5.c-1 Utilities for converting XFig figure files
ii tsconf 1.0-7 touch screen library common files
ii tzdata 2010o-1 time zone and daylight-saving time data
ii ucf 3.0025+nmu1 Update Configuration File: preserve user changes to config files.
ii udev 164-3 /dev/ and hotplug management daemon
ii usbutils 0.87-5 Linux USB utilities
ii util-linux 2.17.2-9 Miscellaneous system utilities
ii vim-common 2:7.2.445+hg~cb94c42c0e1a-1 Vi IMproved - Common files
ii vim-tiny 2:7.2.445+hg~cb94c42c0e1a-1 Vi IMproved - enhanced vi editor - compact version
ii wget 1.12-2.1 retrieves files from the web
ii whiptail 0.52.11-1 Displays user-friendly dialog boxes from shell scripts
ii x11-common 1:7.5+8 X Window System (X.Org) infrastructure
ii x11proto-core-dev 7.0.16-1 X11 core wire protocol and auxiliary headers
ii x11proto-input-dev 2.0-2 X11 Input extension wire protocol
ii x11proto-kb-dev 1.0.4-1 X11 XKB extension wire protocol
ii x11proto-xext-dev 7.1.1-2 X11 various extension wire protocol
ii xauth 1:1.0.4-1 X authentication utility
ii xen-hypervisor-4.0-amd64 4.0.1-2 The Xen Hypervisor on AMD64
ii xen-linux-system-2.6.32-5-xen-amd64 2.6.32-30 Xen system with Linux 2.6.32 on 64-bit PCs (meta-package)
ii xen-utils-4.0 4.0.1-2 XEN administrative tools
ii xen-utils-common 4.0.0-1 XEN administrative tools - common files
ii xenstore-utils 4.0.1-2 Xenstore utilities for Xen
ii xkb-data 1.8-2 X Keyboard Extension (XKB) configuration data
ii xtrans-dev 1.2.5-1 X transport library (development files)
ii xz-utils 5.0.0-2 XZ-format compression utilities
ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
ii zlib1g-dev 1:1.2.3.4.dfsg-3 compression library - development
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