Date: Wed, 10 Nov 1999 18:08:10 -0800 (PST) From: Jin Guojun (FTG staff) <jin@eubie.lbl.gov> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/14814: 4.0-CURRENT SMP mode causes ep0 slow Message-ID: <199911110208.SAA00877@eubie.lbl.gov>
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>Number: 14814 >Category: kern >Synopsis: 4.0-CURRENT SMP mode causes ep0 slow >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Nov 10 18:10:01 PST 1999 >Closed-Date: >Last-Modified: >Originator: Jin Guojun (FTG staff) >Release: FreeBSD 4.0-CURRENT >Organization: >Environment: FreeBSD 4.0-CURRENT after Oct. 1999 Hardware: ASUS P/I P65UP5 MotherBoard with C-P55T2D dual CPU (200MHz Pentium CPU card) daughter board + 3COM 3C509 ethernet NIC >Description: After recompile the kernel to enable SMP, the ep0 drop the throughtput from 7 Mbps to 0.6Mbps Rx and 1.5Mbps Tx. Reinstalled and tested with 3.3-19991110, everything work well. So, the problem is inside kernel of 4.0-CURRENT. >How-To-Repeat: adding following lines into /sys/i386/conf/CURRENT and rebuild kernel: options SMP # Symmetric MultiProcessor Kernel options APIC_IO # Symmetric (APIC) I/O options NAPIC=2 # number of IO APICs >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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