From owner-freebsd-stable Wed May 3 3:52:45 2000 Delivered-To: freebsd-stable@freebsd.org Received: from relay.uvd.chel.su (uvd.chel.su [195.54.2.174]) by hub.freebsd.org (Postfix) with ESMTP id 38FE937B8D2 for ; Wed, 3 May 2000 03:52:25 -0700 (PDT) (envelope-from lw@pd.chel.ru) Received: from isergeya.uvd.chel.su (isergeya.uvd.chel.su [192.168.200.123]) by relay.uvd.chel.su (Postfix) with ESMTP id 04C00FD; Wed, 3 May 2000 16:51:55 +0600 (YEKST) Date: Wed, 3 May 2000 16:52:27 +0500 From: "Sergey A. Ivanov" X-Mailer: The Bat! (v1.41) UNREG / CD5BF9353B3B7091 Reply-To: "Sergey A. Ivanov" X-Priority: 3 (Normal) Message-ID: <15703.000503@pd.chel.ru> To: Peter Jeremy Cc: freebsd-stable@FreeBSD.ORG Subject: Re[2]: sio interrupt handler problem In-reply-To: <00Apr29.104753est.115205@border.alcanet.com.au> References: <00Apr29.104753est.115205@border.alcanet.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hello Peter, Saturday, April 29, 2000, 5:47:49 AM, you wrote: PJ> On Mon, Apr 24, 2000 at 05:34:37PM +1000, Sergey A. Ivanov wrote: >> I have 4.0S installed on old 468dx66. Part of dmesg: >> >>sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 >>sio0: type 16450 PJ> [Gives SILO overflows at 38.4k] PJ> I agree that 16450's are best avoided, but this should still work. PJ> I can get 38.4k through a 16450 using pppd in 2.2.5 on a 386DX25 PJ> (though it won't do 57.6k). A 486dx66 has about 5 times the CPU PJ> power, the overall system should be at least twice as fast. I don't PJ> believe that 4.0S has more than doubled the interrupt overheads, so PJ> there must be some other explanation. PJ> What other related activity do you have? Are you loading the other PJ> serial port or parallel port? No. Single modem, no printers. i'm changed MIO card (same sio type - no luck), patched kernel (FIFO_RX_HIGH -> FIFO_RX_MEDL) - all just same. It works fine at 486dx33/IDE (now i have 486dx66/SCSI). Best regards, Sergey mailto:lw@pd.chel.ru ICQ UIN: 49432691 http://lw.narod.ru To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message