Hi everyone,
I'm new to FreeNAS and seem to have hit a problem that I cannot figure out related to high CPU utilization due to interrupts even when the server is otherwise idle. Here is what "top -P" looks like:
http://pastebin.com/EwVY0Dgq
See pastebin link for better formatting.
1 users Load 1.70 1.66 1.67 Dec 13 16:38
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 964744 36876 5981452 75200 12954k count 153
All 2782620 46252 6976216 152296 pages 192
Proc: Interrupts
r p d s w Csw Trp Sys Int Sof Flt 31 cow 526k total
1 173 526k 455 1467 526k 144 380 103 zfod atkbd0 1
ozfod ata0 14
0.2%Sys 19.1%Intr 0.1%User 0.0%Nice 80.6%Idle %ozfod 244k uhci0 ehci
| | | | | | | | | | | daefr 280k uhci2 18
++++++++++ 88 prcfr 41 uhci1 ahci
dtbuf 174 totfr 1128 hpet0 20
Namei Name-cache Dir-cache 349131 desvn react 3 em0 256
Calls hits % hits % 118371 numvn pdwak 1 em1 257
4126 4126 100 61817 frevn pdpgs
intrn
Disks da0 da1 ada0 ada1 ada2 ada3 cd0 2127612 wire
KB/t 0.00 0.00 11.15 11.15 15.32 15.70 0.00 806020 act
tps 0 0 7 7 8 8 0 343572 inact
MB/s 0.00 0.00 0.07 0.07 0.12 0.12 0.00 5660 cache
%busy 0 0 1 1 1 1 0 12949140 free
buf
[eblau@freenas ~]$ vmstat -i
interrupt total rate
irq1: atkbd0 2 0
irq14: ata0 12609 0
irq17: uhci0 ehci0 4597383687 243737
irq18: uhci2 5260280202 278882
irq19: uhci1 ahci0 1140031 60
irq20: hpet0 21203463 1124
irq256: em0 535573 28
irq257: em1 18785 0
Total 9880574352 523834
I thought this problem might be related to the following bug:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=156596
but the issue occurs whether or not a VGA cable is plugged in or not. I'm not sure if this kernel fix needs to be picked up by FreeNAS or not.
I've tried moving my 2 USB flash drives (SanDisk Cruzers) to other ports, but it makes no difference, even after reboots.
Any suggestions for how to go about fixing this problem? Thanks in advance for your help!
Here is my hardware configuration:
2 x Intel Quad-Core Xeon X5365 / 3 GHz processor
SUPERMICRO X7DBE-X - motherboard - extended ATX - 5000P
Crucial memory - 16 GB (4 x 4GB)- FB-DIMM - DDR II, ECC
Seagate Barracuda 7200.10 HD 500GB SATA II
Antec Titan 650 Server Case - tower - SSI CEB
Sony DRU 170C - DVD±RW (±R DL) / DVD-RAM drive - IDE
2 x SanDisk Cruzer 16GB USB 2.0 flash drives
I'm new to FreeNAS and seem to have hit a problem that I cannot figure out related to high CPU utilization due to interrupts even when the server is otherwise idle. Here is what "top -P" looks like:
http://pastebin.com/EwVY0Dgq
See pastebin link for better formatting.
1 users Load 1.70 1.66 1.67 Dec 13 16:38
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 964744 36876 5981452 75200 12954k count 153
All 2782620 46252 6976216 152296 pages 192
Proc: Interrupts
r p d s w Csw Trp Sys Int Sof Flt 31 cow 526k total
1 173 526k 455 1467 526k 144 380 103 zfod atkbd0 1
ozfod ata0 14
0.2%Sys 19.1%Intr 0.1%User 0.0%Nice 80.6%Idle %ozfod 244k uhci0 ehci
| | | | | | | | | | | daefr 280k uhci2 18
++++++++++ 88 prcfr 41 uhci1 ahci
dtbuf 174 totfr 1128 hpet0 20
Namei Name-cache Dir-cache 349131 desvn react 3 em0 256
Calls hits % hits % 118371 numvn pdwak 1 em1 257
4126 4126 100 61817 frevn pdpgs
intrn
Disks da0 da1 ada0 ada1 ada2 ada3 cd0 2127612 wire
KB/t 0.00 0.00 11.15 11.15 15.32 15.70 0.00 806020 act
tps 0 0 7 7 8 8 0 343572 inact
MB/s 0.00 0.00 0.07 0.07 0.12 0.12 0.00 5660 cache
%busy 0 0 1 1 1 1 0 12949140 free
buf
[eblau@freenas ~]$ vmstat -i
interrupt total rate
irq1: atkbd0 2 0
irq14: ata0 12609 0
irq17: uhci0 ehci0 4597383687 243737
irq18: uhci2 5260280202 278882
irq19: uhci1 ahci0 1140031 60
irq20: hpet0 21203463 1124
irq256: em0 535573 28
irq257: em1 18785 0
Total 9880574352 523834
I thought this problem might be related to the following bug:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=156596
but the issue occurs whether or not a VGA cable is plugged in or not. I'm not sure if this kernel fix needs to be picked up by FreeNAS or not.
I've tried moving my 2 USB flash drives (SanDisk Cruzers) to other ports, but it makes no difference, even after reboots.
Any suggestions for how to go about fixing this problem? Thanks in advance for your help!
Here is my hardware configuration:
2 x Intel Quad-Core Xeon X5365 / 3 GHz processor
SUPERMICRO X7DBE-X - motherboard - extended ATX - 5000P
Crucial memory - 16 GB (4 x 4GB)- FB-DIMM - DDR II, ECC
Seagate Barracuda 7200.10 HD 500GB SATA II
Antec Titan 650 Server Case - tower - SSI CEB
Sony DRU 170C - DVD±RW (±R DL) / DVD-RAM drive - IDE
2 x SanDisk Cruzer 16GB USB 2.0 flash drives
Last edited:
