PRC | sys 0.34s | user 0.10s | | #proc 124 | #trun 2 | #tslpi 93 | | #tslpu 0 | #zombie 0 | clones 0 | | #exit 0 |
CPU | sys 1% | user 1% | irq 110% | idle 288% | wait 0% | steal 0% | guest 0% | | ipc 1.00 | cycl 1.07GHz | curf 3.48GHz | curscal 94% |
cpu | sys 0% | user 0% | irq 73% | idle 27% | cpu003 w 0% | steal 0% | guest 0% | | ipc 0.98 | cycl 2.82GHz | curf 3.68GHz | curscal 99% |
cpu | sys 0% | user 0% | irq 36% | idle 64% | cpu002 w 0% | steal 0% | guest 0% | | ipc 1.10 | cycl 1.36GHz | curf 3.53GHz | curscal 95% |
cpu | sys 0% | user 0% | irq 0% | idle 99% | cpu000 w 0% | steal 0% | guest 0% | | ipc 0.38 | cycl 72MHz | curf 3.12GHz | curscal 84% |
cpu | sys 0% | user 1% | irq 0% | idle 99% | cpu001 w 0% | steal 0% | guest 0% | | ipc 0.68 | cycl 43MHz | curf 3.60GHz | curscal 97% |
CPL | avg1 0.14 | avg5 0.12 | | avg15 0.04 | | | csw 15027 | intr 392691 | | | numcpu 4 | |
MEM | tot 7.6G | free 4.7G | cache 624.4M | dirty 0.1M | buff 668.4M | slab 275.8M | slrec 74.0M | shmem 408.6M | shrss 0.0M | vmbal 0.0M | hptot 0.0M | hpuse 0.0M |
SWP | tot 1.0G | free 1.0G | | | | | | | | | vmcom 1.9G | vmlim 4.8G |
DSK | sda | busy 0% | read 0 | | write 4 | KiB/r 0 | KiB/w 18 | MBr/s 0.0 | MBw/s 0.0 | | avq 8.25 | avio 1.00 ms |
NET | transport | tcpi 62 | tcpo 62 | udpi 0 | udpo 852 | tcpao 0 | tcppo 0 | tcprs 0 | tcpie 0 | tcpor 0 | udpnp 0 | udpie 0 |
NET | network | ipi 536534 | ipo 533389 | | ipfrw 532034 | deliv 88 | | | | | icmpi 26 | icmpo 0 |
NET | eth2 38% | pcki 467782 | pcko 216468 | sp 1000 Mbps | si 382 Mbps | so 46 Mbps | coll 0 | mlti 1 | erri 0 | erro 0 | drpi 0 | drpo 0 |
NET | eth0 38% | pcki 210942 | pcko 461794 | sp 1000 Mbps | si 45 Mbps | so 381 Mbps | coll 0 | mlti 1 | erri 0 | erro 0 | drpi 60 | drpo 0 |
NET | eth2.11 5% | pcki 86676 | pcko 56677 | sp 1000 Mbps | si 52 Mbps | so 16 Mbps | coll 0 | mlti 0 | erri 0 | erro 0 | drpi 0 | drpo 0 |
NET | eth2.14 3% | pcki 15221 | pcko 69215 | sp 1000 Mbps | si 34 Mbps | so 21 Mbps | coll 0 | mlti 0 | erri 0 | erro 0 | drpi 0 | drpo 0 |
NET | eth0.99 0% | pcki 8 | pcko 5 | sp 1000 Mbps | si 0 Kbps | so 2 Kbps | coll 0 | mlti 0 | erri 0 | erro 0 | drpi 0 | drpo 0 |
NET | eth2.75 0% | pcki 4 | pcko 3 | sp 1000 Mbps | si 0 Kbps | so 0 Kbps | coll 0 | mlti 0 | erri 0 | erro 0 | drpi 0 | drpo 0 |
PID SYSCPU USRCPU VGROW RGROW RDDSK WRDSK RUID EUID ST EXC THR S CPUNR CPU CMD 1/2
29 0.13s 0.00s 0K 0K 0K 0K root root -- - 1 S 3 1% ksoftirqd/3
861 0.02s 0.05s 0K 0K 0K 0K frr frr -- - 4 S 0 1% zebra
29127 0.06s 0.00s 0K 0K 0K 0K rngd rngd -- - 5 S 1 1% rngd
611 0.03s 0.02s 0K 528K 0K 0K root root -- - 1 R 0 1% systemd-journa
29023 0.03s 0.02s 0K 0K 0K 0K root root -- - 3 S 0 1% rsyslogd
875 0.02s 0.01s 0K 0K
Intel(R) Xeon(R) CPU E3-1230 V2 @ 3.30GHz
# cat /proc/interrupts |grep eth
26: 12138298 156087348 598925445 0 PCI-MSI 409600-edge eth0
28: 159096 37848 100076 9 PCI-MSI 524288-edge eth1
29: 2025 4617155 0 3780186852 PCI-MSI 526336-edge eth2
30: 197097 0 99931 0 PCI-MSI 1048576-edge eth3-rx-0
31: 0 0 0 0 PCI-MSI 1048577-edge eth3-tx-0
32: 1 0 0 0 PCI-MSI 1048578-edge eth3
[root@gateway ~]#
[root@gateway ~]# lspci |grep -i eth
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (Lewisville) (rev 05)
01:00.0 Ethernet controller: Intel Corporation 82571EB/82571GB Gigabit Ethernet Controller D0/D1 (copper applications) (rev 06)
01:00.1 Ethernet controller: Intel Corporation 82571EB/82571GB Gigabit Ethernet Controller D0/D1 (copper applications) (rev 06)
02:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
高使用率 IRQ 29 是否与高使用率 CPU nr 3 相同或两种不同的使用情况？
top - 10:15:00 up 7 days, 1:05, 2 users, load average: 0,07, 0,08, 0,03
Tasks: 125 total, 3 running, 122 sleeping, 0 stopped, 0 zombie
%Cpu0 : 0,3 us, 0,3 sy, 0,0 ni, 99,0 id, 0,0 wa, 0,3 hi, 0,0 si, 0,0 st
%Cpu1 : 0,0 us, 0,0 sy, 0,0 ni,100,0 id, 0,0 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu2 : 0,0 us, 0,0 sy, 0,0 ni, 63,7 id, 0,0 wa, 1,3 hi, 35,0 si, 0,0 st
%Cpu3 : 0,0 us, 0,0 sy, 0,0 ni, 23,8 id, 0,0 wa, 2,0 hi, 74,2 si, 0,0 st
MiB Mem : 7782,4 total, 4857,1 free, 1573,9 used, 1351,4 buff/cache
MiB Swap: 1024,0 total, 1024,0 free, 0,0 used. 5559,8 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
29 root 20 0 0 0 0 S 2,3 0,0 73:47.45 ksoftirqd/3
29023 root 20 0 504312 18072 14204 S 0,7 0,2 3:02.43 rsyslogd
29127 rngd 20 0 381428 6944 6108 R 0,7 0,1 8:35.26 rngd
10 root 20 0 0 0 0 I 0,3 0,0 9:37.18 rcu_sched
611 root 20 0 168080 53000 51556 R 0,3 0,7 35:13.54 systemd-jour
也许有人知道如何减少 IRQ 使用率？为什么在同样的吞吐量下，eth2 的 IRQ 使用率比 eth0 高得多？eth0 有 QoS，但 eth2 没有。不明白。
[root@gateway ~]# ethtool -k eth0
Features for eth0:
rx-checksumming: on
tx-checksumming: on
tx-checksum-ipv4: off [fixed]
tx-checksum-ip-generic: on
tx-checksum-ipv6: off [fixed]
tx-checksum-fcoe-crc: off [fixed]
tx-checksum-sctp: off [fixed]
scatter-gather: on
tx-scatter-gather: on
tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: off
tx-tcp-segmentation: off
tx-tcp-ecn-segmentation: off [fixed]
tx-tcp-mangleid-segmentation: off
tx-tcp6-segmentation: off
generic-segmentation-offload: off
generic-receive-offload: off
large-receive-offload: off [fixed]
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off [fixed]
receive-hashing: on
highdma: on [fixed]
rx-vlan-filter: off [fixed]
vlan-challenged: off [fixed]
tx-lockless: off [fixed]
netns-local: off [fixed]
tx-gso-robust: off [fixed]
tx-fcoe-segmentation: off [fixed]
tx-gre-segmentation: off [fixed]
tx-gre-csum-segmentation: off [fixed]
tx-ipxip4-segmentation: off [fixed]
tx-ipxip6-segmentation: off [fixed]
tx-udp_tnl-segmentation: off [fixed]
tx-udp_tnl-csum-segmentation: off [fixed]
tx-gso-partial: off [fixed]
tx-sctp-segmentation: off [fixed]
tx-esp-segmentation: off [fixed]
tx-udp-segmentation: off [fixed]
tls-hw-rx-offload: off [fixed]
fcoe-mtu: off [fixed]
tx-nocache-copy: off
loopback: off [fixed]
rx-fcs: off
rx-all: off
tx-vlan-stag-hw-insert: off [fixed]
rx-vlan-stag-hw-parse: off [fixed]
rx-vlan-stag-filter: off [fixed]
l2-fwd-offload: off [fixed]
hw-tc-offload: off [fixed]
esp-hw-offload: off [fixed]
esp-tx-csum-hw-offload: off [fixed]
rx-udp_tunnel-port-offload: off [fixed]
tls-hw-tx-offload: off [fixed]
rx-gro-hw: off [fixed]
tls-hw-record: off [fixed]
[root@gateway ~]# ethtool -k eth2
Features for eth2:
rx-checksumming: on
tx-checksumming: on
tx-checksum-ipv4: off [fixed]
tx-checksum-ip-generic: on
tx-checksum-ipv6: off [fixed]
tx-checksum-fcoe-crc: off [fixed]
tx-checksum-sctp: off [fixed]
scatter-gather: on
tx-scatter-gather: on
tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
tx-tcp-segmentation: on
tx-tcp-ecn-segmentation: off [fixed]
tx-tcp-mangleid-segmentation: off
tx-tcp6-segmentation: on
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off [fixed]
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off [fixed]
receive-hashing: on
highdma: on [fixed]
rx-vlan-filter: on [fixed]
vlan-challenged: off [fixed]
tx-lockless: off [fixed]
netns-local: off [fixed]
tx-gso-robust: off [fixed]
tx-fcoe-segmentation: off [fixed]
tx-gre-segmentation: off [fixed]
tx-gre-csum-segmentation: off [fixed]
tx-ipxip4-segmentation: off [fixed]
tx-ipxip6-segmentation: off [fixed]
tx-udp_tnl-segmentation: off [fixed]
tx-udp_tnl-csum-segmentation: off [fixed]
tx-gso-partial: off [fixed]
tx-sctp-segmentation: off [fixed]
tx-esp-segmentation: off [fixed]
tx-udp-segmentation: off [fixed]
tls-hw-rx-offload: off [fixed]
fcoe-mtu: off [fixed]
tx-nocache-copy: off
loopback: off [fixed]
rx-fcs: off
rx-all: off
tx-vlan-stag-hw-insert: off [fixed]
rx-vlan-stag-hw-parse: off [fixed]
rx-vlan-stag-filter: off [fixed]
l2-fwd-offload: off [fixed]
hw-tc-offload: off [fixed]
esp-hw-offload: off [fixed]
esp-tx-csum-hw-offload: off [fixed]
rx-udp_tunnel-port-offload: off [fixed]
tls-hw-tx-offload: off [fixed]
rx-gro-hw: off [fixed]
tls-hw-record: off [fixed]