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Hi All, I have some doubts , please clear me. Query 1 ) should we set irq afinity of pci lan interface or onboard lan interface or we can do for both ? Query 2) H/w must be APIC enabled and for them only we can do set irq afinity , is it so? Query 3) What are the root cause for packet loss on interface ? Actually in one of my server , i m having strange result, i can not see any value update for lan interface in interrupts. cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 124 0 0 78 IO-APIC-edge timer 1: 0 0 0 614 IO-APIC-edge i8042 8: 0 0 0 1 IO-APIC-edge rtc0 9: 0 0 0 0 IO-APIC-fasteoi acpi 12: 0 0 0 159 IO-APIC-edge i8042 19: 0 13411 0 0 IO-APIC-fasteoi ata_piix, ata_piix 21: 0 0 70 0 IO-APIC-fasteoi ehci_hcd:usb1 23: 0 0 32 0 IO-APIC-fasteoi ehci_hcd:usb2 40: 229974 0 0 0 HPET_MSI-edge hpet2 41: 0 85867 0 0 HPET_MSI-edge hpet3 42: 0 0 73987 0 HPET_MSI-edge hpet4 43: 0 0 0 106848 HPET_MSI-edge hpet5 45: 0 0 0 0 PCI-MSI-edge aerdrv, PCIe PME 46: 0 0 0 0 PCI-MSI-edge aerdrv, PCIe PME 47: 0 0 0 0 PCI-MSI-edge PCIe PME 48: 0 0 0 0 PCI-MSI-edge PCIe PME 49: 0 0 0 0 PCI-MSI-edge PCIe PME 50: 0 0 0 219714 PCI-MSI-edge 51: 10880 0 0 0 PCI-MSI-edge 52: 4 0 0 0 PCI-MSI-edge em1 NMI: 44 16 8 29 Non-maskable interrupts LOC: 282 248 158 68 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts PMI: 44 16 8 29 Performance monitoring interrupts IWI: 0 0 0 0 IRQ work interrupts RES: 6283 2718 2153 5353 Rescheduling interrupts CAL: 128 100 228 278 Function call interrupts TLB: 15 33 12 22 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 Machine check exceptions MCP: 78 78 78 78 Machine check polls ERR: 0 MIS: 0 em1 is my lan interface. ifconfig em1 Link encap:Ethernet HWaddr 00:25:90:0A:E6:A2 inet addr:192.168.100.152 Bcast:192.168.100.255 Mask:255.255.255.0 inet6 addr: fe80::225:90ff:fe0a:e6a2/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:216457 errors:0 dropped:16064 overruns:0 frame:0 TX packets:12715 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:36976063 (35.2 MiB) TX bytes:2391031 (2.2 MiB) Interrupt:16 Memory:fb5e0000-fb600000 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:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) But i can not see any 16 irq no. in cat /proc/interrupts. I tried to increase rx and tx for em1 but still same i m having packet loss on interface. OS : fedora 15 64 bit. 04:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection 05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection Kernel : 2.6.40.6-0.fc15.x86_64 Please guide me to solve this issues and resolve my queries. Warm Regards, Benjamin |
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