Subject: NMBCLUSTERS & rtk0
To: None <port-dreamcast@netbsd.org>
From: Alex Kirk <alex@schnarff.com>
List: port-dreamcast
Date: 11/13/2002 21:48:25
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So I realize I'm just sending another problem out to the list without being 
able to really help fix it, but if nothing else, I might well be 
highlighting somethign that's an easy fix for a real live developer out 
there. 

Anyway, as I mentioned earlier, I've got Qmail and a Mixmaster anonymous 
reamiler running on my Dreamcast. It's been running pretty smoothly so far; 
it was up for 4 days, and crashed in the middle of a large FTP download; 
since then, it's been up for 6+ days with almost no trouble. Oh, and in case 
anyone was still wondering, the issue with not being able to load the kernel 
was specific to a (flaky) system I was using to send it out. 

In any case, I noticed just now that Qmail has quit logging on me, so I 
decided to check out the syslog for weird errors. Not surprisingly, I got a 
nice string of them: 

Nov 13 11:29:33 dreamcast /netbsd: WARNING: mclpool limit reached; increase 
NMBCLUSTERS
Nov 13 11:29:33 dreamcast /netbsd: rtk0: unable to allocate Tx cluster
Nov 13 11:29:33 dreamcast last message repeated 2 times
Nov 13 11:29:33 dreamcast /netbsd: rtk0: unable to allocate Rx cluster
Nov 13 11:29:33 dreamcast last message repeated 5 times
Nov 13 11:29:33 dreamcast /netbsd: rtk0: unable to allocate Tx cluster
Nov 13 11:29:33 dreamcast last message repeated 10 times 

Since they all happened at the same time, they're obviously related...and 
since we know rtk0 is a shitty piece of hardware, I'm not too worried. 
Still, I wonder, should I change NMBCLUSTERS and recompile my kernel? Is 
this indicative of an issue in the driver? Or is this just something small 
and transient that I shouldn't worry about? 


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