* e1000e 2.6.30.1 massive packet loss @ 2009-07-16 7:49 Caleb Cushing 2009-07-16 8:04 ` Eric Dumazet 0 siblings, 1 reply; 4+ messages in thread From: Caleb Cushing @ 2009-07-16 7:49 UTC (permalink / raw) To: Linux Kernel Mailing List So from 2.6.30 to .1 I noticed that via an icmp test (mtr) 20-50% packet loss web browsing became impractical (downgrading fixed the issue). I'm wondering if the change to the driver (w/ msi) is the cause? also wondering if this is known and will be fixed in .2 I can provide more information if necessary. P.S. I'm not on the list, be sure to CC me. -- Caleb Cushing http://xenoterracide.blogspot.com ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: e1000e 2.6.30.1 massive packet loss 2009-07-16 7:49 e1000e 2.6.30.1 massive packet loss Caleb Cushing @ 2009-07-16 8:04 ` Eric Dumazet 2009-07-16 8:20 ` Caleb Cushing 0 siblings, 1 reply; 4+ messages in thread From: Eric Dumazet @ 2009-07-16 8:04 UTC (permalink / raw) To: Caleb Cushing; +Cc: Linux Kernel Mailing List, Linux Netdev List Caleb Cushing a écrit : > So from 2.6.30 to .1 I noticed that via an icmp test (mtr) 20-50% > packet loss web browsing became impractical (downgrading fixed the > issue). I'm wondering if the change to the driver (w/ msi) is the > cause? also wondering if this is known and will be fixed in .2 I can > provide more information if necessary. > Added netdev to get more attention to this. What do you call 20-50% packet loss ? (Losses to icmp flood itself, or tcp losses ? Is the machine answering to icmp flood, or is it the origin ? Are you saying packet loss was not occurring with 2.6.30 ? Could you describe your methodology ? You could give us results of "cat /proc/interrupts" from both versions, because it sounds as an interrupt affinity problem. # cat /proc/interrupts # tc -s -d qdisc # ifconfig -a ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: e1000e 2.6.30.1 massive packet loss 2009-07-16 8:04 ` Eric Dumazet @ 2009-07-16 8:20 ` Caleb Cushing 2009-07-16 9:05 ` Caleb Cushing 0 siblings, 1 reply; 4+ messages in thread From: Caleb Cushing @ 2009-07-16 8:20 UTC (permalink / raw) To: Eric Dumazet; +Cc: Linux Kernel Mailing List, Linux Netdev List > What do you call 20-50% packet loss ? sorry that's just the approximate average loss mtr was reporting. I realize it's not the most accurate test, but I have no problems before changing to .1 or after downgrading from it. > (Losses to icmp flood itself, or tcp losses ? > Is the machine answering to icmp flood, or is it the origin ? mtr uses all icmp, but considering web browsing and I'm sure even dns was affected I'd say all of it. I haven't done further investigation. it was the origin and the losses occured between my desktop machine(2.6.31.x) and my linksys wrt54gl(on openwrt) router. Since I know the cable is good, and the losses haven't happened before or since, and I even tried rebooting the router, I'm fairly confident that it's a result of changes between the 2 kernel versions. > Are you saying packet loss was not occurring with 2.6.30 ? yes. > Could you describe your methodology ? > > You could give us results of "cat /proc/interrupts" from both > versions, because it sounds as an interrupt affinity problem. these are from 2.6.30 I'll send .1 in a bit. > # cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 1605 0 0 0 XT-PIC-XT timer 1: 2 0 0 0 XT-PIC-XT i8042 2: 0 0 0 0 XT-PIC-XT cascade 4: 3 0 0 0 XT-PIC-XT ohci1394 5: 40347741 0 0 0 XT-PIC-XT uhci_hcd:usb3, EMU10K1 6: 2 0 0 0 XT-PIC-XT floppy 8: 4738 0 0 0 XT-PIC-XT rtc0 9: 0 0 0 0 XT-PIC-XT acpi, ehci_hcd:usb2, uhci_hcd:usb6 10: 0 0 0 0 XT-PIC-XT uhci_hcd:usb4 11: 923781 0 0 0 XT-PIC-XT ehci_hcd:usb1, uhci_hcd:usb5, uhci_hcd:usb7, uhci_hcd:usb8 12: 4 0 0 0 XT-PIC-XT i8042 25: 428267 425244 423627 427244 PCI-MSI-edge i915 26: 1194972 1211065 1191149 1200914 PCI-MSI-edge ahci 27: 7287597 7270695 7291505 7280533 PCI-MSI-edge eth0 NMI: 0 0 0 0 Non-maskable interrupts LOC: 66007880 72160316 45190647 33707930 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts RES: 67599 68493 54742 53268 Rescheduling interrupts CAL: 288 295 363 323 Function call interrupts TLB: 133835 49505 43942 48309 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts ERR: 0 MIS: 0 > # tc -s -d qdisc qdisc pfifo_fast 0: dev eth0 root bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 33951429966 bytes 12436885 pkt (dropped 0, overlimits 0 requeues 1375) rate 0bit 0pps backlog 0b 0p requeues 1375 > # ifconfig -a eth0 Link encap:Ethernet HWaddr 00:21:9B:06:4C:C9 inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::221:9bff:fe06:4cc9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:16135626 errors:0 dropped:0 overruns:0 frame:0 TX packets:28308711 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:2181880167 (2080.8 Mb) TX bytes:34811667228 (33198.9 Mb) Memory:fdfc0000-fdfe0000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:92471 errors:0 dropped:0 overruns:0 frame:0 TX packets:92471 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:11927979 (11.3 Mb) TX bytes:11927979 (11.3 Mb) -- Caleb Cushing http://xenoterracide.blogspot.com ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: e1000e 2.6.30.1 massive packet loss 2009-07-16 8:20 ` Caleb Cushing @ 2009-07-16 9:05 ` Caleb Cushing 0 siblings, 0 replies; 4+ messages in thread From: Caleb Cushing @ 2009-07-16 9:05 UTC (permalink / raw) To: Eric Dumazet; +Cc: Linux Kernel Mailing List, Linux Netdev List 2.6.30.1 with the issue. CPU0 CPU1 CPU2 CPU3 0: 36 0 0 0 XT-PIC-XT timer 1: 2 0 0 0 XT-PIC-XT i8042 2: 0 0 0 0 XT-PIC-XT cascade 4: 3 0 0 0 XT-PIC-XT ohci1394 5: 392 0 0 0 XT-PIC-XT uhci_hcd:usb2, EMU10K1 6: 2 0 0 0 XT-PIC-XT floppy 8: 163 0 0 0 XT-PIC-XT rtc0 9: 0 0 0 0 XT-PIC-XT acpi, ehci_hcd:usb3, uhci_hcd:usb6 10: 0 0 0 0 XT-PIC-XT uhci_hcd:usb4 11: 1318 0 0 0 XT-PIC-XT ehci_hcd:usb1, uhci_hcd:usb5, uhci_hcd:usb7, uhci_hcd:usb8 12: 4 0 0 0 XT-PIC-XT i8042 25: 801 812 813 785 PCI-MSI-edge i915 26: 3233 3217 3261 3263 PCI-MSI-edge ahci 27: 199 200 184 173 PCI-MSI-edge eth0 NMI: 0 0 0 0 Non-maskable interrupts LOC: 14886 16536 13854 15765 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts RES: 504 515 358 397 Rescheduling interrupts CAL: 55 79 74 44 Function call interrupts TLB: 649 1202 685 902 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts ERR: 0 MIS: 0 qdisc pfifo_fast 0: dev eth0 root bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 82807 bytes 499 pkt (dropped 0, overlimits 0 requeues 0) rate 0bit 0pps backlog 0b 0p requeues 0 eth0 Link encap:Ethernet HWaddr 00:21:9B:06:4C:C9 inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::221:9bff:fe06:4cc9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:366 errors:0 dropped:0 overruns:0 frame:0 TX packets:519 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:130219 (127.1 Kb) TX bytes:86900 (84.8 Kb) Memory:fdfc0000-fdfe0000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:817 errors:0 dropped:0 overruns:0 frame:0 TX packets:817 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:55043 (53.7 Kb) TX bytes:55043 (53.7 Kb) ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-07-16 9:05 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2009-07-16 7:49 e1000e 2.6.30.1 massive packet loss Caleb Cushing 2009-07-16 8:04 ` Eric Dumazet 2009-07-16 8:20 ` Caleb Cushing 2009-07-16 9:05 ` Caleb Cushing
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