DragonFly bugs List (threaded) for 2006-03
Re: (cache_lock diagnostics)
On Tue, 2006-03-21 at 10:08 -0800, Matthew Dillon wrote:
> :This is a DFly 1.4.0 system (DragonFly 1.4.0-RELEASE (myhost) #3: Thu
> :Jan 19 08:33:37 EST 2006) that is being used primarily as a spam
> :filtering machine and, as such, sees some pretty high volume. About a
> :week ago I started getting the following type of messages appearing in
> :my logs and am wondering about a) the nature of the severity these
> :represent b) the underlying cause and c) how to diagnose further.
> :As a side note, this machine was upgraded from a 1.0 system and the
> :ports replaced/upgraded using pkgsrc.
> As long as the machine doesn't deadlock in the name resolution code,
> the messages are harmless. The messages are printed when the filename
> resolver blocks for more then one second and will occur more often on
> busy systems.
> I should probably change the default timeout. You can adjust the
> default timeout with the debug.nclockwarn sysctl. This value is in
> ticks so 100 = 1 second. Try 500 (5 seconds). The sysctl only effects
> the reporting of the warning.
Sounds good, I will use the sysctl then to keep the chatter down :-) As
far as I can tell, the box still performs as usual and I haven't seen
any specific performance issues resulting from this.
p.s. Sorry about the lack of subject line; when I originally posted this
I pasted the errors into the body and forgot to go back and add a