Very Computer

by **Wm. Allen Vonderschmi** » Sat, 12 Apr 1997 04:00:00

I received the following error today...
CONFIG: timeout - Timeout table overflow (NCALL = 30 exceeded).

Last night I removed 5 SCSI drives from an Adaptec 1540B
controller and added a Compaq 32bit Fast Wide EISA controller with 6
SCSI Fast Wide drives. I retained the IDE boot drive in this system
and reloaded from tape the filesystems that were on these drives.
Anyway it has been a while since I have seen this error on any of our
UNIX systems and now can't seem to find what this parameter is used
for. I know I can use idtune or configure to adjust the NCALL setting
but I would like to know 'why' I need to increase this setting. Any
pointers to information would be greatly appreciated.

by **Bela Lubki** » Tue, 15 Apr 1997 04:00:00

> I received the following error today...
> CONFIG: timeout - Timeout table overflow (NCALL = 30 exceeded).

> Last night I removed 5 SCSI drives from an Adaptec 1540B
> controller and added a Compaq 32bit Fast Wide EISA controller with 6
> SCSI Fast Wide drives. I retained the IDE boot drive in this system
> and reloaded from tape the filesystems that were on these drives.
> Anyway it has been a while since I have seen this error on any of our
> UNIX systems and now can't seem to find what this parameter is used
> for. I know I can use idtune or configure to adjust the NCALL setting
> but I would like to know 'why' I need to increase this setting. Any
> pointers to information would be greatly appreciated.

Timeouts are a way for the kernel to schedule an event in the future.
Any driver might use them. Different drivers might use them
differently. You have apparently just discovered that the Compaq driver
you've switched to uses them more than the Adaptec "ad" driver you
switched from. No big deal, just give the kernel more table entries to
work with.

Quote:>Bela<

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