Date: Sat, 05 Aug 2000 19:20:18 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Dennis <dennis@etinc.com> Cc: hackers@FreeBSD.ORG Subject: Re: FreeBSD belly up with big config Message-ID: <727.965496018@critter.freebsd.dk> In-Reply-To: Your message of "Sat, 05 Aug 2000 13:21:47 EDT." <200008051708.NAA00486@etinc.com>
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In message <200008051708.NAA00486@etinc.com>, Dennis writes: >With 1800 interfaces in the system Freebsd seems to use about 50Mhz of cpu >when idle in "interrupts" even when there are no interrupts to process. on >a 500Mhz box it uses 10% of the cpu and it seems linear with different >speed processors. > >the 1800 interfaces are 900 DLCIs on a T3 frame with 900 bridge groups >(rather common for a DSL delivered via Frame). This with just one >line...the same problem could occur with say 8 T1 lines with 100+ DLCIs on >each. > >It seems that there is substantial overhead just scanning interfaces for >some routine maintenance...is there any hope of alleviating this deboggle? Sure: send us your patches! -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD coreteam member | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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