Date: Fri, 14 Aug 1998 15:20:29 +0100 From: "Neil A. Carson" <neil@causality.com> To: bugs@FreeBSD.ORG Subject: Possible bugs in FreeBSD kernel Message-ID: <35D447AD.946BB082@causality.com>
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Greetings, While running FreeBSD no my laptop, I've come into the following problems. I'm using a slightly old -current source tree and possibly some of these issues may have been fixed---I can't see that they have though. As usual, be prepared to accept the possibility that I'm talking complete rubbish and have got everythign wrong :) I'm running ona Fujitsu Lifebook 900 laptop with P233 CPU. I have a plug-in 3Com Etherlink III PCMCIA card connected to a 10BaseT network. 1) Ethernet: This seems to pick up and use the zp driver, so my interface is zp0. - This driver, for some reason, eats system time for breakfast. On NFS ops my system regularly boosts to 70% of its time spent in the kernel... Don't know what doing. - During inward FTPs, I get around 100KB/sec xfer rates due to repeated stalls for around 1/2 sec. Wierd. - In intensive NFS ops (eg dd from /dev/zero to a file on an NFS mounted FS) I get very good xfer rates, but the thing occasionally hangs the kernel which then recovers 30-40 secs later. 2) APM: It seems a while ago in FreeBSD the APM `cpu lower clock rate on idle' option aws disabled. It used to use a #if NAPM>0 thing in there, but someone disabled this in favour of a function vector for the idle/hlt code instead. I can't see any evidence to suggest that this vector change was implemented in the general APM code, so it could be that most CPUs aren't saving power out there. I might have missed this, though. Sorry if this is a complete waste of time... Cheers, Neil To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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