For X4100 M2, we have no interrupt on disk, after upgraded to X4440, we got
interrupt on disk, and what's weird is that the interrupt on network card is
always equal to the number of interrupt on disk. I also used iosnoop the
check what is touching the disk, iosnoop shows sched touched the disk, not
sure why.
*X4100 M2
phxdb158$> intrstat -c 0*
device | cpu0 %tim
-------------+---------------
e1000g#1 | 0 0.0
ehci#0 | 0 0.0
nge#0 | 3352 2.1
device | cpu0 %tim
-------------+---------------
e1000g#1 | 0 0.0
ehci#0 | 0 0.0
mpt#0 | 0 0.0
nge#0 | 3201 2.0
device | cpu0 %tim
-------------+---------------
e1000g#1 | 0 0.0
ehci#0 | 0 0.0
mpt#0 | 0 0.0
nge#0 | 3458 2.2
device | cpu0 %tim
-------------+---------------
e1000g#1 | 0 0.0
ehci#0 | 0 0.0
mpt#0 | 0 0.0
nge#0 | 3045 1.9
device | cpu0 %tim
-------------+---------------
e1000g#1 | 0 0.0
ehci#0 | 0 0.0
mpt#0 | 0 0.0
nge#0 | 3025 1.8
device | cpu0 %tim
-------------+---------------
e1000g#1 | 0 0.0
ehci#0 | 0 0.0
mpt#0 | 0 0.0
nge#0 | 3206 1.9
*X4440
phxdb611$> intrstat -c 7*
device | cpu7 %tim
-------------+---------------
ehci#0 | 0 0.0
nge#0 | 6983 2.9
nge#1 | 3 0.0
nv_sata#0 | 0 0.0
nv_sata#2 | 6983 0.6 *====> disk interrupt, always equal to the
interrupt on nge#0, why this happens.*
device | cpu7 %tim
-------------+---------------
ehci#0 | 0 0.0
nge#0 | 6944 2.9
nge#1 | 4 0.0
nv_sata#0 | 0 0.0
nv_sata#2 | 6944 0.6
device | cpu7 %tim
-------------+---------------
ehci#0 | 0 0.0
nge#0 | 7177 2.9
nge#1 | 4 0.0
nv_sata#0 | 0 0.0
nv_sata#2 | 7177 0.6
device | cpu7 %tim
-------------+---------------
ehci#0 | 0 0.0
nge#0 | 6908 2.9
nge#1 | 3 0.0
nv_sata#0 | 0 0.0
nv_sata#2 | 6908 0.6
device | cpu7 %tim
-------------+---------------
ehci#0 | 0 0.0
nge#0 | 6722 2.9
nge#1 | 4 0.0
nv_sata#0 | 0 0.0
nv_sata#2 | 6722 0.6
device | cpu7 %tim
-------------+---------------
aac#0 | 0 0.0
ehci#0 | 0 0.0
nge#0 | 6579 2.7
nge#1 | 4 0.0
nv_sata#0 | 0 0.0
nv_sata#2 | 6579 0.6
phxdb611$> iosnoop -a
STRTIME DEVICE MAJ MIN UID PID D BLOCK
SIZE PATHNAME ARGS
2010 Feb 1 23:47:59 sd1 31 70 0 3 W 2875520
8192 /var/adm/pacct fsflush\0
2010 Feb 1 23:47:59 sd1 31 69 0 3 W 11872 8192
/tmp/hsperfdata_root/249 fsflush\0
2010 Feb 1 23:48:06 sd1 31 70 0 3 W 253224 1024
/var/perfstats/vmstat.phxdb611.out_0201_230000 fsflush\0
2010 Feb 1 23:48:12 sd1 31 64 0 3 W 55376
15360 <none> fsflush\0
2010 Feb 1 23:48:12 sd1 31 70 0 3 W 29210
11264 <none> fsflush\0
2010 Feb 1 23:48:12 sd1 31 69 0 3 W 11520
14336 <none> fsflush\0
2010 Feb 1 23:48:12 sd1 31 68 0 3 W 105634
512 <none> fsflush\0
2010 Feb 1 23:48:14 sd1 31 70 0 3 W 252824 2048
/var/perfstats/iostat.phxdb611.out_0201_230000 fsflush\0
2010 Feb 1 23:48:19 sd1 31 69 0 0 W 16
2048 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 69 0 0 W 48
8192 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 69 0 0 W 64
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 69 0 0 W 73
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 69 0 0 W 1552
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 69 0 0 W 1584
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 16
2048 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 1260
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295377
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295395
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295403
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295407
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295414
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295416
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295429
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 590676
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 590695
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 689553
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 689603
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 689640
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 689681
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 689720
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 689734
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 689737
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 689747
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 788232
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 49936
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 R 886608
8192 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295440
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295487
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295583
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295625
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295651
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 295699
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296581
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296586
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296590
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886286
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886305
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886310
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886435
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886495
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886498
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886501
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886506
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886525
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886553
1536 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886611
5632 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886643
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 49936
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296597
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296600
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296608
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296618
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296632
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296637
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296662
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 296753
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 492226
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 492359
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 492597
1536 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 492999
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886658
4096 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886667
2560 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 886672
1536 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 984676
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 984882
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 984884
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 1082990
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 1083087
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 1083088
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 1083098
1536 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 49936
1024 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 1082800
8192 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 1083104
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 1083110
512 <none> sched\0
2010 Feb 1 23:48:19 sd1 31 64 0 0 W 49936
1024 <none> sched\0
2010 Feb 1 23:48:21 sd1 31 70 0 3 W 253112 4096
/var/perfstats/netstats-phxdb611-000051414.txt fsflush\0
^C
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