Re: DLTs, disconnection and hangs--solved (was: Recent current hangs frequently for 1 to 2 seconds.)

1999-12-22 Thread Wilko Bulte
On Wed, Dec 22, 1999 at 09:37:55AM +1030, Greg Lehey wrote: On Tuesday, 21 December 1999 at 10:07:28 +0100, Wilko Bulte wrote: On Mon, Dec 20, 1999 at 05:08:27PM -0800, Matthew Dillon wrote: It's possible you might be on to something. I've been running iostat at 1 second intervals, and

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-21 Thread Wilko Bulte
On Mon, Dec 20, 1999 at 05:08:27PM -0800, Matthew Dillon wrote: :It's possible you might be on to something. I've been running iostat :at 1 second intervals, and during the last hang I saw: : : ttyad2 da1 sa1 cpu : tin tout KB/t tps

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-21 Thread Matthew Dillon
: :On 1999-Dec-21 12:08:27 +1100, Matthew Dillon [EMAIL PROTECTED] wrote: :Tape drives may: :* Not support disconnection ... :* Implement a crappy SCSI command stack ... :* Not properly terminate the SCSI bus ... :* Introduce too much noise onto the SCSI bus due to bad

DLTs, disconnection and hangs--solved (was: Recent current hangs frequently for 1 to 2 seconds.)

1999-12-21 Thread Greg Lehey
On Tuesday, 21 December 1999 at 10:07:28 +0100, Wilko Bulte wrote: On Mon, Dec 20, 1999 at 05:08:27PM -0800, Matthew Dillon wrote: It's possible you might be on to something. I've been running iostat at 1 second intervals, and during the last hang I saw: ttyad2

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-20 Thread Greg Lehey
On Saturday, 18 December 1999 at 20:16:53 -0800, Matthew Dillon wrote: I've just upgraded to -CURRENT as of yesterday, and I'm noticing a number of occasions where all activity ceases for a second or two at a time; it seems to be related to IDE disk activity with the new ATA driver, but I

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-20 Thread Matthew Dillon
:Thanks. I've put in the patch, but I'm still seeing the problems. It :seems to be related to SCSI activity (I'm currently performing a :backup on a DLT drive, and apart from that very little disk I/O). Any :other ideas? It seems to me as if the whole system freezes :(keystrokes don't echo,

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-20 Thread Greg Lehey
On Monday, 20 December 1999 at 16:19:06 -0800, Matthew Dillon wrote: :Thanks. I've put in the patch, but I'm still seeing the problems. It :seems to be related to SCSI activity (I'm currently performing a :backup on a DLT drive, and apart from that very little disk I/O). Any :other ideas?

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-20 Thread Matthew Dillon
:It's possible you might be on to something. I've been running iostat :at 1 second intervals, and during the last hang I saw: : : ttyad2 da1 sa1 cpu : tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id : 36 142

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-19 Thread Matthew Dillon
: driver, but it's also possible that they are due to a bug in the : buffer cache flushing code which the following patch fixes. So try : the patch and see if that fixes your problem. If it doesn't then : we can at least rule it out as being the cause of the problem you :

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-18 Thread Matthew Dillon
:I've just upgraded to -CURRENT as of yesterday, and I'm noticing a :number of occasions where all activity ceases for a second or two at a :time; it seems to be related to IDE disk activity with the new ATA :driver, but I don't have much evidence. I'm running a SiS 5591 :chipset. Has anybody

Re: Recent current hangs frequently for 1 to 2 seconds.

1999-12-18 Thread Greg Lehey
On Saturday, 18 December 1999 at 20:16:53 -0800, Matthew Dillon wrote: :I've just upgraded to -CURRENT as of yesterday, and I'm noticing a :number of occasions where all activity ceases for a second or two at a :time; it seems to be related to IDE disk activity with the new ATA :driver, but I