14.11.2013, 17:20, "Alexandre Ratchov" <[email protected]>:
> On Thu, Nov 14, 2013 at 01:16:41PM +0400, Alexander Pakhomov wrote:
>
>> Hi.
>> I discovered high CPU0 interruptions load (amd64) in various cases.
>> wifi (athn, urtwn): up to 100% at 2 MB/s download. Usually 50%. Grows faster
>> then linear with net load. Sometimes system freezes for about a minute.
>> Web speed tests consume significantly less CPU then wget/firefox/ktorrent
>> download. I
>> don't know why.
>> Dmitrij D. Czarkoff has 6% interruptions load during samba download (1.3
>> MB/s, urtwn).
>> I sent bug report but by now it's unreplied.
>>
>> SSD write (dd if=/dev/zero of=... bs=1M): 10% unencrypted, 50% encrypted
>> (softraid0).
>> Disk read doesn't load cause interruptions load.
>> USB stick dd: essentially no interruptions load (2 MB/s)
>>
>> 1) What interruptions load should be considered normal? I used to
>> think even 10% is too high.
>
> yes, though it depends on the workload
>
>> I want to investigate the problem and profile interruption handlers.
>> 2) Is there any OpenBSD kernel profiling support? High resolution clocks,
>> tick counters.
>
> do you observe the same problem with the GENERIC kernel?
>
Mostly GENERIC.MP
GENERIC.SP has high interrupts load with wifi but OK with disk.
Interesting that SP has higher encrypted write speed.
Interrupts load for WiFi varies a lot.
dd unenc sp:
interrupt total rate
irq0/clock 17944 102
irq144/acpi0 35 0
irq96/inteldrm0 39 0
irq96/ehci0 47 0
irq176/azalia0 1 0
irq101/ehci1 26 0
irq102/ahci0 437730 2501
irq145/pckbc0 587 3
Total 456409 2608
sys 17% int 9%
164 MB/s
dd_unenc_mp
interrupt total rate
irq0/clock 114430 401
irq0/ipi 6786 23
irq144/acpi0 57 0
irq96/inteldrm0 38 0
irq96/ehci0 535 1
irq176/azalia0 1 0
irq101/ehci1 26 0
irq102/ahci0 274667 963
irq145/pckbc0 643 2
Total 397183 1393
30 sys 50 int
200 MB/s
dd_enc_sp
interrupt total rate
irq0/clock 33068 101
irq144/acpi0 67 0
irq96/inteldrm0 55 0
irq96/ehci0 47 0
irq176/azalia0 1 0
irq101/ehci1 26 0
irq102/ahci0 470959 1440
irq145/pckbc0 1535 4
Total 505758 1546
100 sys 0 inter
54 MB/s
dd_enc_mp
interrupt total rate
irq0/clock 176891 400
irq0/ipi 29242 66
irq144/acpi0 89 0
irq96/inteldrm0 72 0
irq96/ehci0 535 1
irq176/azalia0 1 0
irq101/ehci1 26 0
irq102/ahci0 515102 1165
irq145/pckbc0 1496 3
Total 723454 1636
60x4 sys 80 int
42 MB/s
wget_athn_sp
interrupt total rate
irq0/clock 139244 100
irq144/acpi0 279 0
irq96/inteldrm0 156 0
irq96/ehci0 323243 232
irq176/azalia0 1 0
irq101/ehci1 26 0
irq102/ahci0 475704 342
irq145/pckbc0 3465 2
Total 942118 678
40%
interrupt total rate
irq0/clock 329629 399
irq0/ipi 78886 95
irq144/acpi0 165 0
irq96/inteldrm0 134 0
irq96/ehci0 133755 162
irq176/azalia0 1 0
irq101/ehci1 26 0
irq102/ahci0 516208 625
irq145/pckbc0 2618 3
Total 1061422 1286
40 int
wget_urtwn_sp
interrupt total rate
irq0/clock 47794 100
irq144/acpi0 95 0
irq96/inteldrm0 87 0
irq96/ehci0 59300 125
irq176/azalia0 1 0
irq101/ehci1 26 0
irq102/ahci0 475109 1002
irq145/pckbc0 2244 4
Total 584656 1233
40%
wget_urtwn0_mp
interrupt total rate
irq0/clock 293365 399
irq0/ipi 56036 76
irq144/acpi0 147 0
irq96/inteldrm0 109 0
irq96/ehci0 90325 123
irq176/azalia0 1 0
irq101/ehci1 26 0
irq102/ahci0 516167 703
irq145/pckbc0 2347 3
Total 958523 1305
40% int
dmesg (was in bugs@):
OpenBSD 5.4 (GENERIC.MP) #41: Tue Jul 30 15:30:02 MDT 2013
[email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 17045254144 (16255MB)
avail mem = 16583786496 (15815MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xdae23000 (66 entries)
bios0: vendor LENOVO version "8DET46WW (1.16 )" date 05/18/2011
bios0: LENOVO 4290RB3
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SLIC SSDT SSDT SSDT HPET APIC MCFG ECDT ASF! SSDT SSDT
UEFI UEFI UEFI
acpi0: wakeup devices LID_(S3) SLPB(S3) IGBE(S4) EXP4(S4) EXP7(S4) EHC1(S3)
EHC2(S3) HDEF(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpihpet0 at acpi0: 14318179 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i3-2310M CPU @ 2.10GHz, 2093.49 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
cpu0: apic clock running at 99MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM) i3-2310M CPU @ 2.10GHz, 2093.20 MHz
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 1, core 0, package 0
cpu2 at mainbus0: apid 2 (application processor)
cpu2: Intel(R) Core(TM) i3-2310M CPU @ 2.10GHz, 2093.20 MHz
cpu2:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu2: 256KB 64b/line 8-way L2 cache
cpu2: smt 0, core 1, package 0
cpu3 at mainbus0: apid 3 (application processor)
cpu3: Intel(R) Core(TM) i3-2310M CPU @ 2.10GHz, 2093.20 MHz
cpu3:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu3: 256KB 64b/line 8-way L2 cache
cpu3: smt 1, core 1, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63
acpiec0 at acpi0
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PEG_)
acpiprt2 at acpi0: bus 2 (EXP1)
acpiprt3 at acpi0: bus 3 (EXP2)
acpiprt4 at acpi0: bus 5 (EXP4)
acpiprt5 at acpi0: bus 13 (EXP5)
acpiprt6 at acpi0: bus -1 (EXP7)
acpicpu0 at acpi0: C3, C1, PSS
acpicpu1 at acpi0: C3, C1, PSS
acpicpu2 at acpi0: C3, C1, PSS
acpicpu3 at acpi0: C3, C1, PSS
acpipwrres0 at acpi0: PUBS
acpitz0 at acpi0: critical temperature is 99 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: SLPB
acpibat0 at acpi0: BAT0 model "42T4865" serial 30832 type LION oem "LGC"
acpibat1 at acpi0: BAT1 not present
acpiac0 at acpi0: AC unit online
acpithinkpad0 at acpi0
acpidock0 at acpi0: GDCK not docked (0)
cpu0: Enhanced SpeedStep 2093 MHz: speeds: 2100, 2000, 1900, 1800, 1700, 1600,
1500, 1400, 1300, 1200, 1100, 1000, 900, 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 2G Host" rev 0x09
vga1 at pci0 dev 2 function 0 "Intel HD Graphics 3000" rev 0x09
intagp0 at vga1
agp0 at intagp0: aperture at 0xe0000000, size 0x10000000
inteldrm0 at vga1
drm0 at inteldrm0
inteldrm0: 1366x768
wsdisplay0 at vga1 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
"Intel 6 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
em0 at pci0 dev 25 function 0 "Intel 82579LM" rev 0x04: msi, address
f0:de:f1:6d:75:bf
ehci0 at pci0 dev 26 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 16
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia0 at pci0 dev 27 function 0 "Intel 6 Series HD Audio" rev 0x04: msi
azalia0: codecs: Conexant/0x506e, Intel/0x2805, using Conexant/0x506e
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 6 Series PCIE" rev 0xb4: msi
pci1 at ppb0 bus 2
ppb1 at pci0 dev 28 function 1 "Intel 6 Series PCIE" rev 0xb4: msi
pci2 at ppb1 bus 3
"Realtek 8188CE" rev 0x01 at pci2 dev 0 function 0 not configured
ppb2 at pci0 dev 28 function 3 "Intel 6 Series PCIE" rev 0xb4: msi
pci3 at ppb2 bus 5
ppb3 at pci0 dev 28 function 4 "Intel 6 Series PCIE" rev 0xb4: msi
pci4 at ppb3 bus 13
sdhc0 at pci4 dev 0 function 0 "Ricoh 5U822 SD/MMC" rev 0x07: apic 2 int 16
sdmmc0 at sdhc0
ehci1 at pci0 dev 29 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 23
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
pcib0 at pci0 dev 31 function 0 "Intel QM67 LPC" rev 0x04
ahci0 at pci0 dev 31 function 2 "Intel 6 Series AHCI" rev 0x04: msi, AHCI 1.3
scsibus0 at ahci0: 32 targets
sd0 at scsibus0 targ 0 lun 0: <ATA, INTEL SSDSC2BW24, DC02> SCSI3 0/direct
fixed naa.50015178f366188d
sd0: 228936MB, 512 bytes/sector, 468862128 sectors, thin
ichiic0 at pci0 dev 31 function 3 "Intel 6 Series SMBus" rev 0x04: apic 2 int 18
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 8GB DDR3 SDRAM PC3-10600 SO-DIMM
spdmem1 at iic0 addr 0x51: 8GB DDR3 SDRAM PC3-10600 SO-DIMM
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
wsmouse1 at pms0 mux 0
pms0: Synaptics clickpad, firmware 8.0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
aps0 at isa0 port 0x1600/31
mtrr: Pentium Pro MTRR support
uhub2 at uhub0 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
uvideo0 at uhub2 port 6 configuration 1 interface 0 "Chicony Electronics Co.,
Ltd. Integrated Camera" rev 2.00/8.54 addr 3
video0 at uvideo0
uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (5767b22a20b432d3.a) swap on sd0b dump on sd0b
urtwn0 at uhub2 port 2 "802.11n USB WLAN" rev 2.00/2.00 addr 4
urtwn0: MAC/BB RTL8192CU, RF 6052 2T2R, address f8:1a:67:22:b3:89
sd1 at scsibus2 targ 1 lun 0: <OPENBSD, SR CRYPTO, 005> SCSI2 0/direct fixed
sd1: 131596MB, 512 bytes/sector, 269510505 sectors
urtwn0 detached
athn0 at uhub2 port 2 "ATHEROS USB2.0 WLAN" rev 2.00/1.08 addr 4
athn0: AR9271 rev 1 (1T1R), ROM rev 13, address 64:66:b3:09:18:7a
athn0 detached
urtwn0 at uhub2 port 2 "802.11n USB WLAN" rev 2.00/2.00 addr 4
urtwn0: MAC/BB RTL8192CU, RF 6052 2T2R, address f8:1a:67:22:b3:89
> -- Alexandre
