Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 10 Jul 2001 13:55:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 10 Jul 2001 13:55:36 -0400 Received: from portraits.wsisiz.edu.pl ([213.135.44.34]:18226 "EHLO portraits.wsisiz.edu.pl") by vger.kernel.org with ESMTP id ; Tue, 10 Jul 2001 13:55:19 -0400 Date: Tue, 10 Jul 2001 19:54:51 +0200 (CEST) From: Lukasz Trabinski To: Subject: 2.4.7-pre7, softirq and serial driver. Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=ISO-8859-2 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello In Changelog to pre5 we can read: -pre5: - Andrea Arkangeli: softirq cleanups and fixes, and everybody is happy again (ie I changed some details to make me happy ;) I'm happy, because before pre5, I have a lot problems with my fast serial cards (Titan Electronics) works with 921600 baud. Problems was with reciving packets, ping has looked like this: # ping pc-5.chl.pl -s 1600 -c 35 (1500 is MTU) [...] 1608 bytes from pc-5.chl.pl (212.160.254.134): icmp_seq=20 ttl=128 time=44.596 msec [...] --- pc-5.chl.pl ping statistics --- 35 packets transmitted, 14 packets received, 60% packet loss round-trip min/avg/max/mdev = 44.545/44.946/48.502/1.004 ms As You see, there was a lot of (60%) packet loss from this host. Now (with 2.4.6-pre7) ,is almost OK (just after reboot): # ping pc-5.chl.pl -s 1600 -c 20 --- pc-5.chl.pl ping statistics --- 20 packets transmitted, 18 packets received, 10% packet loss round-trip min/avg/max/mdev = 44.988/45.378/48.094/0.779 ms Only 2 packets was lost! I was very happy, but after few hours (4-5) I have again 60% or more packet loss! Where is a problem? Maybe serial driver is buggy? Additional information about this host: [root@vendeta /root]# lspci 00:00.0 Host bridge: Intel Corporation 430HX - 82439HX TXC [Triton II] (rev 01) 00:07.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] (rev 01) 00:07.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] 00:0e.0 Serial controller: Titan Electronics Inc: Unknown device a005 00:0e.1 Communication controller: Titan Electronics Inc: Unknown device ffff 00:0f.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03) 00:10.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03) 00:11.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03) 01:04.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 22) 01:05.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 22) 02:04.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 22) 02:05.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 22) 03:04.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 22) 03:05.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 22) [root@vendeta /root]# procinfo Linux 2.4.7-pre5 (root@bofh.polvoice.pl) (gcc 2.96 20000731 ) #1 1CPU [vendeta] Memory: Total Used Free Shared Buffers Cached Mem: 62504 18472 44032 0 392 11736 Swap: 19792 0 19792 Bootup: Tue Jul 10 19:21:54 2001 Load average: 0.00 0.00 0.00 1/24 904 user : 0:00:12.37 0.8% page in : 11357 nice : 0:00:00.00 0.0% page out: 1565 system: 0:01:52.31 7.0% swap in : 1 idle : 0:24:43.89 92.3% swap out: 0 uptime: 0:26:48.55 context : 43998 irq 0: 160857 timer irq 10: 39388 wanpipe1 irq 1: 2 keyboard irq 11: 6808 serial irq 2: 0 cascade [4] irq 12: 232420 eth1, eth2 irq 5: 236075 eth3, eth4 irq 14: 25849 ide0 irq 9: 125986 eth0 [root@vendeta /root]# cat /proc/tty/driver/serial serinfo:1.0 driver:5.05c revision:2001-07-08 0: uart:unknown port:3F8 irq:4 1: uart:unknown port:2F8 irq:3 2: uart:unknown port:3E8 irq:4 3: uart:unknown port:2E8 irq:3 4: uart:16C950/954 port:6100 irq:11 baud:921600 tx:417044 rx:403722 oe:57 RTS|CTS|DTR|DSR|CD 5: uart:16C950/954 port:6108 irq:11 baud:38400 tx:133 rx:250 RTS|CTS|DTR|DSR -- *[ ?ukasz Tr?bi?ski ]* SysAdmin @wsisiz.edu.pl - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/