Return-Path: Received: from smtp.osdl.org (smtp.osdl.org [65.172.181.25]) by shell0.pdx.osdl.net (8.13.1/8.11.6) with ESMTP id kAJFEEka009238 for ; Sun, 19 Nov 2006 07:14:14 -0800 Received: from fire-2.osdl.org (localhost [127.0.0.1]) by smtp.osdl.org (8.12.8/8.12.8) with ESMTP id kAJFE8ix020411 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO) for ; Sun, 19 Nov 2006 07:14:08 -0800 Received: (from www@localhost) by fire-2.osdl.org (8.12.8/8.12.5/Submit) id kAJFE7Yd020409; Sun, 19 Nov 2006 07:14:07 -0800 Date: Sun, 19 Nov 2006 07:14:07 -0800 Message-Id: <200611191514.kAJFE7Yd020409@fire-2.osdl.org> From: bugme-daemon@bugzilla.kernel.org To: shemminger@osdl.org Subject: [Bug 7551] New: Fluctuating and slow network perfomance X-Bugzilla-Reason: AssignedTo X-Bugzilla-Category: Networking X-Bugzilla-Component: IPV4 Received-SPF: pass (localhost is always allowed.) X-Spam-Status: No, hits=0 required=5 tests=AWL,NO_REAL_NAME,OSDL_HEADER_SUBJECT_BRACKETED X-Spam-Checker-Version: SpamAssassin 2.63-osdl_revision__1.105__ X-MIMEDefang-Filter: osdl$Revision: 1.159 $ X-Scanned-By: MIMEDefang 2.36 http://bugzilla.kernel.org/show_bug.cgi?id=7551 Summary: Fluctuating and slow network perfomance Kernel Version: 2.6.18.x Status: NEW Severity: high Owner: shemminger@osdl.org Submitter: c.gm@usa.net Most recent kernel where this bug did *NOT* occur: 2.6.17.13 Distribution: Crux Hardware Environment: Seem not dependence tested om Intel P4 PII and AMD Optron based. We use Intel or 3com NIC the problem seem to be the same regardels wich nic it runs through. Software Environment: Pure linux router with iptables or as filserver with samba. Teste also on server with Apache and singel NIC, but same issue. Problem Description: Since 2.18.X it seem to be problem with the network performance. This problem might have been for a while but it come more obvious now when I updated the Main router. The trafik is now much slower even testing local between to machines with same kernel version. I tested between mashine with older kernel with same network connection, this show normal transfer speed and ping. Steps to reproduce: I have tested on non loaded local network. THIS IS PART OF THE PROBLEM Ping is flutuating, no other traffic to from the mashine during test. The test are made between two 2.6.18.3 servers. 664 octets from 192.168.117.254: icmp_seq=0 ttl=64 time=9.3 ms 64 octets from 192.168.117.254: icmp_seq=1 ttl=64 time=0.2 ms 64 octets from 192.168.117.254: icmp_seq=2 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=3 ttl=64 time=1.3 ms 64 octets from 192.168.117.254: icmp_seq=4 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=5 ttl=64 time=0.2 ms 64 octets from 192.168.117.254: icmp_seq=6 ttl=64 time=0.2 ms 64 octets from 192.168.117.254: icmp_seq=7 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=8 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=9 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=10 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=11 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=12 ttl=64 time=1.3 ms 64 octets from 192.168.117.254: icmp_seq=13 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=14 ttl=64 time=0.2 ms 64 octets from 192.168.117.254: icmp_seq=15 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=16 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=17 ttl=64 time=1.2 ms 64 octets from 192.168.117.254: icmp_seq=18 ttl=64 time=0.2 ms 64 octets from 192.168.117.254: icmp_seq=19 ttl=64 time=0.2 ms 64 octets from 192.168.117.254: icmp_seq=20 ttl=64 time=0.1 ms 64 octets from 192.168.117.254: icmp_seq=21 ttl=64 time=0.2 ms 64 octets from 192.168.117.254: icmp_seq=22 ttl=64 time=0.2 ms 64 octets from 192.168.117.254: icmp_seq=23 ttl=64 time=1.3 ms 64 octets from 192.168.117.254: icmp_seq=24 ttl=64 time=1.3 ms This is between 2 2.6.17.13 This is very normal ping for our network. 64 octets from 192.168.117.229: icmp_seq=0 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=1 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=2 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=3 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=4 ttl=64 time=0.0 ms 64 octets from 192.168.117.229: icmp_seq=5 ttl=64 time=0.0 ms 64 octets from 192.168.117.229: icmp_seq=6 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=7 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=8 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=9 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=10 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=11 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=12 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=13 ttl=64 time=0.0 ms 64 octets from 192.168.117.229: icmp_seq=14 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=15 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=16 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=17 ttl=64 time=0.0 ms 64 octets from 192.168.117.229: icmp_seq=18 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=19 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=20 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=21 ttl=64 time=0.2 ms 64 octets from 192.168.117.229: icmp_seq=22 ttl=64 time=0.0 ms 64 octets from 192.168.117.229: icmp_seq=23 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=24 ttl=64 time=0.1 ms 64 octets from 192.168.117.229: icmp_seq=25 ttl=64 time=0.1 ms COPY TEST: Are general made between ramddisk I have use both scp and other copy method, like SAMBA and NFS but the problem are simmular, use the result from scp test. TEST 1 This is between two server with kernel 2.6.17.13 scp sysop@229.ndc:/usr/src/linux-2.6.18.3.tar.bz2 /home/sysop sysop@229.ndc's password: linux-2.6.18.3.tar.bz2 100% 40MB 13.3MB/s 00:03 The same speed all time TEST 2 This is between two server with kernel 2.6.16.7 and 2.6.17.13 scp sysop@229.ndc:/usr/src/linux-2.6.18.3.tar.bz2 /home/sysop sysop@229.ndc's password: linux-2.6.18.3.tar.bz2 100% 40MB 10.0MB/s 00:04 Same speed all the time TEST 3 HERE IS PROBLEM SHOWN This is between two server with kernel 2.6.18.3 The speed fluctuate scp sysop@217.25.252.230:/usr/src/linux-2.6.18.1.tar.bz2 /home/sysop sysop@217.25.252.230's password: linux-2.6.18.1.tar.bz2 100% 40MB 8.0MB/s 00:05 TEST 3a scp sysop@217.25.252.230:/usr/src/linux-2.6.18.1.tar.bz2 /home/sysop sysop@217.25.252.230's password: linux-2.6.18.1.tar.bz2 100% 40MB 4.6MB/s 00:09 TEST 3b scp sysop@217.25.252.230:/usr/src/linux-2.6.18.1.tar.bz2 /home/sysop sysop@217.25.252.230's password: linux-2.6.18.1.tar.bz2 100% 40MB 7.6MB/s 00:07 Test 4a This is between two other server with kernel 2.6.18.3 but two other machine differnt NIC. scp sysop@77.ndc:/usr/src/linux-2.6.17.13.tar.bz2 /home/sysop sysop@77.ndc's password: linux-2.6.17.13.tar.bz2 100% 39MB 7.9MB/s 00:05 Test 4a scp sysop@77.ndc:/usr/src/linux-2.6.17.13.tar.bz2 /home/sysop sysop@77.ndc's password: linux-2.6.17.13.tar.bz2 100% 39MB 6.6MB/s 00:06 Im not a programmer, so I can't go more deep down to the problem than this. ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.