I have the latest Debian installed and updated with apt-get.

But my server freezes all the time. Sometime it can be just after a couple of hours and sometimes it can take days.


When the computer freeze there is no way of communicate with the computer. Leeds on the computer is blinking and the fans are still spinning. But otherwise no communication is available.

I have checked all logs in /var/log/ but non of them shows any problem. I'm now running memtest to check the ram and that seems to go correct without any errors.

Is there anything else that can make the computer freez. Something in Debian? Is there anyway to check the temperature in the computer? Can the computer freeze for temp? It doesn't feel that hot thou.


Anyone that can help me out. It's really annoying since I need to be sure that my network home is up.


----edit----
Memtest run without an error for 14 hour.


I now before one freeze got some syslog messages hope they will help:

Mar 24 13:10:56 localhost kernel: ------------[ cut here ]------------
Mar 24 13:10:56 localhost kernel: kernel BUG at mm/slab.c:608!
Mar 24 13:10:56 localhost kernel: invalid opcode: 0000 [#1]
Mar 24 13:10:56 localhost kernel: SMP
Mar 24 13:10:56 localhost kernel: Modules linked in: vmnet vmmon button ac battery ip6table_filter ip6_tables iptable_raw xt_policy xt_multiport ipt_ULOG ipt_TTL ipt_ttl ipt_TOS ipt_tos ipt_TCPMSS ipt_SAME ipt_REJECT ipt_REDIRECT ipt_recent ipt_owner ipt_NETMAP ipt_MASQUERADE ipt_LOG ipt_iprange ipt_hashlimit ipt_ECN ipt_ecn ipt_DSCP ipt_dscp ipt_CLUSTERIP ipt_ah ipt_addrtype ip_nat_tftp ip_nat_snmp_basic ip_nat_pptp ip_nat_irc ip_nat_ftp ip_nat_amanda ip_conntrack_tftp ip_conntrack_pptp ip_conntrack_netbios_ns ip_conntrack_irc ip_conntrack_ftp ts_kmp ip_conntrack_amanda xt_tcpmss xt_pkttype xt_physdev bridge xt_NFQUEUE xt_MARK xt_mark xt_mac xt_limit xt_length xt_helper xt_dccp xt_conntrack xt_CONNMARK xt_connmark xt_CLASSIFY xt_tcpudp xt_state iptable_nat ip_nat ip_conntrack iptable_mangle nfnetlink iptable_filter ip_tables x_tables ipv6 dm_snapshot dm_mirror dm_mod loop tsdev snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer parport_pc parport i2c_i801 snd psmouse soundcore sn
Mar 24 13:10:56 localhost kernel: _page_alloc i2c_core floppy serio_raw pcspkr rtc shpchp pci_hotplug intel_agp agpgart evdev ext3 jbd mbcache sd_mod ide_cd cdrom ata_piix libata scsi_mod ehci_hcd generic uhci_hcd e1000 r8169 piix ide_core usbcore thermal processor fan
Mar 24 13:10:56 localhost kernel: CPU: 1
Mar 24 13:10:56 localhost kernel: EIP: 0060:[<c0156eda>] Tainted: P VLI
Mar 24 13:10:56 localhost kernel: EFLAGS: 00010002 (2.6.18-6-686 #1)
Mar 24 13:10:56 localhost kernel: EIP is at free_block+0x41/0xe4
Mar 24 13:10:56 localhost kernel: eax: 80010068 ebx: dfffd3c0 ecx: df8841c0 edx: c1410600
Mar 24 13:10:56 localhost kernel: esi: e0830200 edi: dffff6c0 ebp: dfff9434 esp: dfb45f28
Mar 24 13:10:56 localhost kernel: ds: 007b es: 007b ss: 0068
Mar 24 13:10:56 localhost kernel: Process events/1 (pid: 7, ti=dfb44000 task=dfb04aa0 task.ti=dfb44000)

The system will freeze if the cpu exceeds its maximum temp. You can install lm-sensors and monitor cpu temps via the command line. If you are using a gui on the server you can install GKrellm to have a constant display of several things. Best thing to do if you suspect this is to get an application called cpuburn-in and stress the box and see if it crashes. You will then know the cause.

Thanks for your reply.


I will test cpuburn and see how it reacts. Have also seen now if I'm not running vmware servern on the machine the freezes is not that freqvent. So if that's beacuse there is some bug in vmware server or that the processeor works extra hard and there fore freeze I do not really know.