FS#1349 - System is unstable under high network load. #6306
Comments
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moeller0: Mon Feb 12 11:39:14 2018 daemon.info pppd[1130]: No response to 5 echo-requests This indicates that part of the problem is that due to high a load too many of PPP's LCP packets were either dropped or queued up too long. As a work-around for that issue you might want to try installing luci-app-sqm and sqm-scripts and intantiate sqm on pppoe-wan with download/ingress bandwidth set to say 85% of the nominal download bandwidth and upload/egress set to 95% of the nominal upload bandwidth. That should leave enough slack for PPP's LCP packets to not be crowded out. |
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ambientsummer: A problem with PPPD occurs when the system stops responding. On 184-r5993-1cb06d8907 no problems with PPPD. |
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airend: This looks related to FS#1333 (MTK Ethernet Issues After NAPI polling Changes). |
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ambientsummer: Ignore request to re-open. It was incorrect. |
ambientsummer:
OpenWrt/LEDE version: 184-r6069-a464fba7eb
Device: Xiaomi MiWiFi Mini (ramips/mt7620)
The problem occurs immediately after the starting fast downloads and uploads in the torrent-client on wired connected PC. On 184-r5993-1cb06d8907 everything is stable.
partial logread
Mon Feb 12 11:39:14 2018 daemon.info pppd[1130]: No response to 5 echo-requestsMon Feb 12 11:39:14 2018 daemon.notice pppd[1130]: Serial link appears to be disconnected.
Mon Feb 12 11:39:14 2018 daemon.info pppd[1130]: Connect time 7.2 minutes.
Mon Feb 12 11:39:14 2018 daemon.info pppd[1130]: Sent 270076244 bytes, received 213831528 bytes.
Mon Feb 12 11:39:14 2018 daemon.err odhcp6c[1349]: Failed to send DHCPV6 message to ff02::1:2 (Permission denied)
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Network device 'pppoe-wan' link is down
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Network alias 'pppoe-wan' link is down
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'wan_6' has link connectivity loss
Mon Feb 12 11:39:14 2018 daemon.err odhcp6c[1349]: Failed to send DHCPV6 message to ff02::1:2 (Permission denied)
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'wan' has lost the connection
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'vpn0' has lost the connection
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'vpn0_addr' is now down
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'vpn0_addr' is disabled
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Network alias '' link is down
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'vpn0_addr' has link connectivity loss
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'wan_6' is disabled
Mon Feb 12 11:39:14 2018 daemon.notice netifd: tunnel 'gre4-vpn0' link is down
Mon Feb 12 11:39:14 2018 daemon.notice netifd: wan_6 (1349): Command failed: Permission denied
Mon Feb 12 11:39:14 2018 daemon.info dnsmasq[1690]: read /etc/hosts - 4 addresses
Mon Feb 12 11:39:14 2018 daemon.info dnsmasq[1690]: read /tmp/hosts/odhcpd - 2 addresses
Mon Feb 12 11:39:14 2018 daemon.info dnsmasq[1690]: read /tmp/hosts/dhcp.cfg01411c - 3 addresses
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'vpn0' is now down
Mon Feb 12 11:39:14 2018 daemon.notice netifd: Interface 'vpn0' is setting up now
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.434847] ------------[ cut here ]------------
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.439613] WARNING: CPU: 0 PID: 1901 at net/sched/sch_generic.c:316 dev_watchdog+0x1dc/0x25c
Mon Feb 12 11:39:15 2018 kern.info kernel: [ 499.448335] NETDEV WATCHDOG: eth0 (mtk_soc_eth): transmit queue 0 timed out
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.455441] Modules linked in: rt2800soc rt2800pci rt2800mmio rt2800lib pppoe ppp_async rt2x00soc rt2x00pci rt2x00mmio rt2x00lib pppox ppp_generic nf_conntrack_ipv6 mt76x2e mt7603e mt76 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_mangle iptable_filter ip_tables crc_itu_t crc_ccitt compat ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables x_tables ip_gre gre ip_tunnel eeprom_93cx6 leds_gpio ohci_platform ohci_hcd ehci_platform ehci_hcd gpio_button_hotplug
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.528734] usbcore nls_base usb_common
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.531424] CPU: 0 PID: 1901 Comm: gre.sh Not tainted 4.9.77 #0
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.537470] Stack : 8042751a 00000033 00000000 00000001 8723fb3c 803d9207 8038bd90 0000076d
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.546034] 80423660 0000013c ffffffff 00000200 00200000 8004d250 80391570 803d0000
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.554592] 00000003 0000013c 8038f738 87c0de2c 00200000 8007b3cc 00000000 00000006
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.563156] 00000006 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.571716] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.580285] ...
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.582783] Call Trace:
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.585315] [<8000e458>] show_stack+0x54/0x88
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.589784] [<800239d0>] __warn+0xe4/0x118
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.593966] [<80023a34>] warn_slowpath_fmt+0x30/0x3c
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.599051] [<8024aad4>] dev_watchdog+0x1dc/0x25c
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.603872] [<80057988>] call_timer_fn.isra.4+0x24/0x84
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.609222] [<80057b94>] run_timer_softirq+0x1ac/0x1f8
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.614477] [<8002653c>] __do_softirq+0x250/0x298
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.619295] [<800096f8>] handle_int+0x138/0x144
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.623937] [<801724e8>] __copy_user_common+0x160/0x2d8
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.629301] [<8017ab90>] copy_page_to_iter+0x118/0x2d4
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.634556] [<8007f228>] generic_file_read_iter+0x58c/0x9e8
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.640273] [<800b9b80>] __vfs_read+0x10c/0x14c
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.644908] [<800ba910>] vfs_read+0x98/0x140
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.649266] [<800bb934>] SyS_read+0x58/0xc4
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.653550] [<80012ccc>] syscall_common+0x34/0x58
Mon Feb 12 11:39:15 2018 kern.warn kernel: [ 499.658363] ---[ end trace 365777323827c701 ]---
Mon Feb 12 11:39:15 2018 kern.err kernel: [ 499.663085] mtk_soc_eth 10100000.ethernet eth0: transmit timed out
Mon Feb 12 11:39:15 2018 kern.info kernel: [ 499.669414] mtk_soc_eth 10100000.ethernet eth0: dma_cfg:80000065
Mon Feb 12 11:39:15 2018 kern.info kernel: [ 499.675564] mtk_soc_eth 10100000.ethernet eth0: tx_ring=0, base=07134000, max=128, ctx=0, dtx=0, fdx=82, next=0
Mon Feb 12 11:39:15 2018 kern.info kernel: [ 499.685882] mtk_soc_eth 10100000.ethernet eth0: rx_ring=0, base=07159000, max=128, calc=42, drx=46
Mon Feb 12 11:39:15 2018 daemon.notice pppd[1130]: Connection terminated.
Mon Feb 12 11:39:15 2018 daemon.info pppd[1130]: Connect time 7.2 minutes.
Mon Feb 12 11:39:15 2018 daemon.info pppd[1130]: Sent 270076244 bytes, received 213831528 bytes.
Mon Feb 12 11:39:15 2018 daemon.info pppd[1130]: Sent PADT
Mon Feb 12 11:39:15 2018 daemon.info pppd[1130]: Exit.
Mon Feb 12 11:39:15 2018 daemon.notice netifd: Interface 'wan' is now down
Mon Feb 12 11:39:15 2018 daemon.notice netifd: Interface 'wan' is setting up now
Mon Feb 12 11:39:15 2018 daemon.notice netifd: Interface 'vpn0' is now down
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