From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?UGF3ZcWCIFN0YXN6ZXdza2k=?= Subject: Re: Problem wit route cache Date: Mon, 08 Feb 2010 14:33:48 +0100 Message-ID: <4B7012BC.9000702@itcare.pl> References: <4B700EC2.5090207@itcare.pl> <1265635690.3048.8.camel@edumazet-laptop> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------010305020902080908090908" Cc: Linux Network Development list To: Eric Dumazet Return-path: Received: from r242-20.iq.pl ([86.111.242.20]:43665 "EHLO smtp.iq.pl" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751744Ab0BHNds (ORCPT ); Mon, 8 Feb 2010 08:33:48 -0500 In-Reply-To: <1265635690.3048.8.camel@edumazet-laptop> Sender: netdev-owner@vger.kernel.org List-ID: This is a multi-part message in MIME format. --------------010305020902080908090908 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit W dniu 2010-02-08 14:28, Eric Dumazet pisze: > Le lundi 08 février 2010 à 14:16 +0100, Paweł Staszewski a écrit : > >> Hello >> >> From some time i have problem with route cache in linux >> this is an info that i have in dmesg: >> >> Route hash chain too long! >> Adjust your secret_interval! >> Route hash chain too long! >> Adjust your secret_interval! >> Route hash chain too long! >> Adjust your secret_interval! >> Route hash chain too long! >> Adjust your secret_interval! >> Route hash chain too long! >> Adjust your secret_interval! >> Route hash chain too long! >> Adjust your secret_interval! >> Route hash chain too long! >> Adjust your secret_interval! >> Route hash chain too long! >> Adjust your secret_interval! >> vlan0811: 9 rebuilds is over limit, route caching disabled >> Route hash chain too long! >> Adjust your secret_interval! >> >> The problem is that change of net.ipv4.route.secret_interval is change >> nothing -- no matter that i set secret_interval from dfault 3600 to 2 or >> 10000 i have always the same info about route cahce is disabled. >> Also i change this parameter net.ipv4.rt_cache_rebuild_count from >> default 4 to 9 and the same info - i try also change this to 12 but also >> this change nothing. >> >> The machine that have this info is: >> 2x Intel(R) Xeon(R) CPU X5450 @ 3.00GHz >> 12GB of RAM >> >> > Are you running a 64bit kernel ? > What is your kernel version ? > > Please send : > > # grep . /proc/sys/net/ipv4/route/* > #rtstat -c10 -i1 > > Yes this is x86_64 kernel i kernels 2.6.32.2 / 2.6.32.7 and now 2.6.33-rc6-git5 and on all kernels the same thing happens. grep . /proc/sys/net/ipv4/route/* /proc/sys/net/ipv4/route/error_burst:1250 /proc/sys/net/ipv4/route/error_cost:250 grep: /proc/sys/net/ipv4/route/flush: Permission denied /proc/sys/net/ipv4/route/gc_elasticity:2 /proc/sys/net/ipv4/route/gc_interval:2 /proc/sys/net/ipv4/route/gc_min_interval:0 /proc/sys/net/ipv4/route/gc_min_interval_ms:500 /proc/sys/net/ipv4/route/gc_thresh:65535 /proc/sys/net/ipv4/route/gc_timeout:300 /proc/sys/net/ipv4/route/max_size:524288 /proc/sys/net/ipv4/route/min_adv_mss:256 /proc/sys/net/ipv4/route/min_pmtu:552 /proc/sys/net/ipv4/route/mtu_expires:600 /proc/sys/net/ipv4/route/redirect_load:5 /proc/sys/net/ipv4/route/redirect_number:9 /proc/sys/net/ipv4/route/redirect_silence:5120 /proc/sys/net/ipv4/route/secret_interval:2 This happens not all the time. I have this info only when there are "internet rush hours" - thn there is about 700Mbit/s TX + 700Mbit/s RX forwarded traffic > > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > --------------010305020902080908090908 Content-Type: text/plain; name="rtstat.txt" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="rtstat.txt" cnRzdGF0IC1jMTAgLWkxDQpydF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxy dF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxy dF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxydF9jYWNoZXxy dF9jYWNoZXwNCiBlbnRyaWVzfCAgaW5faGl0fGluX3Nsb3dffGluX3Nsb3dffGluX25vX3Jv fCAgaW5fYnJkfGluX21hcnRpfGluX21hcnRpfCBvdXRfaGl0fG91dF9zbG93fG91dF9zbG93 fGdjX3RvdGFsfGdjX2lnbm9yfGdjX2dvYWxffGdjX2RzdF9vfGluX2hsaXN0fG91dF9obGlz fA0KICAgICAgICB8ICAgICAgICB8ICAgICB0b3R8ICAgICAgbWN8ICAgICB1dGV8ICAgICAg ICB8ICBhbl9kc3R8ICBhbl9zcmN8ICAgICAgICB8ICAgIF90b3R8ICAgICBfbWN8ICAgICAg ICB8ICAgICAgZWR8ICAgIG1pc3N8IHZlcmZsb3d8IF9zZWFyY2h8dF9zZWFyY2h8DQogICAx MjA4MnwzNDQwMjE3Mjk2fDY0NTY0MTM4NzN8ICAgICAgIDB8ICA2MjMwOTR8ICAgICAyOTR8 ICAgICAgIDB8ICAgICAgIDN8ICA3MzUxMTZ8IDU3MDEwNjJ8ICAgICAgIDB8MjYxMjYwNzM5 fDI2MTA0MDM2NXwgICAgICAgMHwgICAgICAgMHw2NTQ2MTc5NjF8ICAxNzkwNDR8DQogICAx MDAzN3wgICAgICAgMHwgIDE1MjE0MnwgICAgICAgMHwgICAgICAgN3wgICAgICAgMHwgICAg ICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgIDEyM3wgICAgICAgMHwgICAgICAgMHwgICAg ICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwNCiAgIDEyMDMyfCAg ICAgICAwfCAgMTU1NzcwfCAgICAgICAwfCAgICAgICA0fCAgICAgICAwfCAgICAgICAwfCAg ICAgICAwfCAgICAgICAwfCAgICAgMTIyfCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAg ICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfA0KICAgMTA5OTF8ICAgICAgIDB8 ICAxNjEwNDB8ICAgICAgIDB8ICAgICAgIDd8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8 ICAgICAgIDB8ICAgICAxMjl8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8 ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8DQogICAgOTg5OHwgICAgICAgMHwgIDE1NTUw M3wgICAgICAgMHwgICAgICAgOXwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAg MHwgICAgIDEyNXwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAg MHwgICAgICAgMHwgICAgICAgMHwNCiAgIDEyNTUzfCAgICAgICAwfCAgMTU3NDU1fCAgICAg ICAwfCAgICAgICA2fCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAg MTI5fCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAg ICAwfCAgICAgICAwfA0KICAgMTA5ODN8ICAgICAgIDB8ICAxNTc3NDJ8ICAgICAgIDB8ICAg ICAgIDl8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAxMjh8ICAg ICAgIDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8ICAg ICAgIDB8DQogICAgOTM3NXwgICAgICAgMHwgIDE1ODIyNnwgICAgICAgMHwgICAgICAgOHwg ICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgIDExNXwgICAgICAgMHwg ICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwgICAgICAgMHwN CiAgIDExOTI5fCAgICAgICAwfCAgMTU5MzQyfCAgICAgICAwfCAgICAgIDEwfCAgICAgICAw fCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAgMTMwfCAgICAgICAwfCAgICAgICAw fCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfCAgICAgICAwfA0KICAgMTEw NDZ8ICAgICAgIDB8ICAxNTgwMTV8ICAgICAgIDB8ICAgICAgIDh8ICAgICAgIDB8ICAgICAg IDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAxMjZ8ICAgICAgIDB8ICAgICAgIDB8ICAgICAg IDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8ICAgICAgIDB8DQo= --------------010305020902080908090908--