I have a Freebsd server that crashes at random it seems. Thing are fine and then it just dies. I have checked the logs and havent found anything helpful in them. Today when it crashed I got this error on my ssh session "Command terminated on signal 11." Any ideas what could be causing this.....ram gone bad? Over heating? etc...?


Thanks

Signal 11 is a hardware problem, so yes try to replace the ram.

Well, sig 11 isn't always a hardware problem... but yes, it most likely is. (Try running a make buildworld; if you get sig 11s then it's a pretty clear sign of a hardware error.)

Bad memory often causes this, but so does inadequate cpu cooling. On rare occasions it will even be caused by poorly seated IDE cables.

Thanks for the replys, I will test those things out. The harddisk is a 10K rpm scsi, if its get hot could this shut off and cause the problem possibly too? I didnt have any problems for a few months until last week I moved the server to be between 2 others to make more space(1u servers)so heat is first what came to my mind.

Thanks

Mar 17 12:05:34 www2 /kernel: CRC Value Mismatch
Mar 17 12:05:34 www2 /kernel: (da0:ahc0:0:0:0): READ(10). CDB: 28 0 0 a6 f2 8f 0 0 20 0
Mar 17 12:05:34 www2 /kernel: (da0:ahc0:0:0:0): ABORTED COMMAND asc:48,0
Mar 17 12:05:34 www2 /kernel: (da0:ahc0:0:0:0): Initiator detected error message received
Mar 17 12:05:34 www2 /kernel: (da0:ahc0:0:0:0): parity error detected in Data-in phase. SEQADDR(0x8b) SCSIRATE(0xc2)


Found this in the /var/log/messages today after/durring its crash.

The box is up, and I see these lines being inserted while the server is online...

Thanks