Hi,<br><br>I have a machine under heavy network traffic.<br>Kernel is Centos kernel 2.6.18 SMP 32 bit.<br><br>Ethernets are <br>05:00.0 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper) (rev 01)<br>
05:00.1 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper) (rev 01)<br>06:01.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)<br>06:02.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)<br>
<br>The mainboard is with Intel 5000 series chipset Asus board.<br><br>When I use 2.6.9 kernel with the same location and traffic I have had no softirq usage. Also in 2.4 Centos 3 machine I have had no softirq usage.<br><br>
With the same location and traffic I have softirq usage %25:<br>Cpu0 : 2.0%us, 2.0%sy, 0.0%ni, 71.3%id, 0.0%wa, 2.7%hi, 22.0%si, 0.0%st<br>Cpu1 : 1.0%us, 1.3%sy, 0.0%ni, 79.7%id, 0.0%wa, 1.3%hi, 16.6%si, 0.0%st<br>
<br>I have no extra parameters in grub.conf.<br><br>Is it a known problem?<br><br>What do you suggest?<br><br>Regards,<br><br>Oguz Yilmaz<br><br><br><br># cat /proc/interrupts<br> CPU0 CPU1<br> 0: 12475556 27878448 IO-APIC-edge timer<br>
1: 2 1 IO-APIC-edge i8042<br> 4: 20 15 IO-APIC-edge serial<br> 8: 3 0 IO-APIC-edge rtc<br> 9: 0 0 IO-APIC-level acpi<br> 12: 1 3 IO-APIC-edge i8042<br>
58: 3194 551096 IO-APIC-level ahci<br> 66: 0 0 IO-APIC-level ehci_hcd:usb1, uhci_hcd:usb2, uhci_hcd:usb4<br> 74: 0 0 IO-APIC-level uhci_hcd:usb3, uhci_hcd:usb5<br> 82: 13 20148 IO-APIC-level eth0<br>
98: 49173115 8304 IO-APIC-level eth1<br>106: 165302876 0 PCI-MSI eth3<br>114: 20091 188108320 PCI-MSI eth4<br>169: 61 22012 IO-APIC-level eth2<br>NMI: 0 0<br>
LOC: 40353900 40353898<br>ERR: 0<br>MIS: 0<br><br># cat /proc/stat<br>cpu 109394 94 48981 7357582 21023 59947 475284 0<br>cpu0 54410 40 25805 3688679 3670 33482 230074 0<br>cpu1 54984 53 23176 3668902 17353 26465 245210 0<br>
intr 443941445 40367708 3 0 2 35 0 0 0 3 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 554483 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20168 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 49274302 0 0 0 0 0 0 0 165429410 0 0 0 0 0 0 0 188273249 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22080 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0<br>
ctxt 35284048<br>btime 1231271275<br>processes 292966<br>procs_running 1<br>procs_blocked 0<br><br># vmstat<br>procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------<br> r b swpd free buff cache si so bi bo in cs us sy id wa st<br>
0 0 0 3220064 163084 412172 0 0 5 29 183 438 1 7 91 0 0<br><br>