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    High CPU usage on interrupt processing

    Scheduled Pinned Locked Moved Hardware
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    • S
      Svarov
      last edited by

      Hello,

      I’ve installed pfSense 2.4.3 on Fujitsu PRIMERGY RX1330 M3.
      The full configuration is:
      MB: Fujitsu PRIMERGY RX1330 M3
      CPU: Intel(R) Xeon(R) CPU E3-1220 v6 @ 3.00GHz
      RAM: 8G
      RAID: Fujitsu PRAID CP400i SAS (2 disks in RAID1, 1TB)
      LAN: PLAN-CP4x1Gbit-Cu-Intel-I350-T4 x2 (8 eth port on PCI + 2 integrated, also Intel)

      And everything works fine as far as I tested — all 10 LANs, RAID, no errors in dmesg.
      There’s only one thing that concerns me — high CPU load on interrupt processing.

      Server is currently idle, but interrupt processing is always at around 4% up to 18% (rare peaks).
      Is it OK or something doesn’t work as expected?

      Here’s some system output:

      top:
      last pid: 98015;  load averages:  0.21,  0.25,  0.22                                                                                                                           up 0+00:28:40  15:05:59
      42 processes:  1 running, 41 sleeping
      CPU:  0.1% user,  0.0% nice,  0.1% system,  4.2% interrupt, 95.6% idle
      Mem: 51M Active, 55M Inact, 272M Wired, 29M Buf, 7252M Free
      Swap: 4096M Total, 4096M Free
      
        PID USERNAME    THR PRI NICE   SIZE    RES STATE   C   TIME    WCPU COMMAND
        315 root          1  22    0   263M 38960K accept  0   0:02   0.38% php-fpm
      97182 root          1  20    0 20068K  3380K CPU2    2   0:00   0.02% top
      22538 root          1  20    0 37704K  7992K kqread  2   0:00   0.01% nginx
      16689 root          5  52    0 13036K  2356K uwait   1   0:00   0.01% dpinger
      
      vmstat –i:
      interrupt                          total       rate
      irq4: uart0                          223          0
      cpu0:timer                        355780        203
      cpu3:timer                        842198        480
      cpu2:timer                        283307        162
      cpu1:timer                        274212        156
      irq284: mfi0                      126370         72
      irq285: xhci0                         55          0
      irq286: ahci0                         39          0
      irq287: igb4:que 0                 18894         11
      irq288: igb4:que 1                  2932          2
      irq289: igb4:que 2                  5402          3
      irq290: igb4:que 3                  2363          1
      irq291: igb4:link                      2          0
      irq292: igb5:que 0                  1694          1
      irq293: igb5:que 1                  1694          1
      irq294: igb5:que 2                  1694          1
      irq295: igb5:que 3                  1694          1
      irq296: igb5:link                      1          0
      irq302: igb7:que 0                  1693          1
      irq303: igb7:que 1                  1693          1
      irq304: igb7:que 2                  1693          1
      irq305: igb7:que 3                  1693          1
      irq306: igb7:link                      1          0
      irq307: igb8:que 0                  1693          1
      irq308: igb8:que 1                  1693          1
      irq309: igb8:que 2                  1693          1
      irq310: igb8:que 3                  1693          1
      irq311: igb8:link                      1          0
      irq312: igb9:que 0                  1694          1
      irq313: igb9:que 1                  1694          1
      irq314: igb9:que 2                  1694          1
      irq315: igb9:que 3                  1694          1
      irq316: igb9:link                      3          0
      Total                            1938879       1106
      
      1 Reply Last reply Reply Quote 0
      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        Do you have powerd enabled (speedstep)?

        Steve

        1 Reply Last reply Reply Quote 0
        • S
          Svarov
          last edited by

          No, powerd is not enabled.

          I attached dmesg output below, maybe it will give some additional clues to what's going on.

          Copyright (c) 1992-2017 The FreeBSD Project.
          Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
                  The Regents of the University of California. All rights reserved.
          FreeBSD is a registered trademark of The FreeBSD Foundation.
          FreeBSD 11.1-RELEASE-p7 #10 r313908+986837ba7e9(RELENG_2_4): Mon Mar 26 18:08:25 CDT 2018
              root@buildbot2.netgate.com:/builder/ce-243/tmp/obj/builder/ce-243/tmp/FreeBSD-src/sys/pfSense amd64
          FreeBSD clang version 5.0.1 (tags/RELEASE_501/final 320880) (based on LLVM 5.0.1)
          VT(efifb): resolution 1024x768
          CPU: Intel(R) Xeon(R) CPU E3-1220 v6 @ 3.00GHz (3000.10-MHz K8-class CPU)
            Origin="GenuineIntel"  Id=0x906e9  Family=0x6  Model=0x9e  Stepping=9
            Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
            Features2=0x7ffafbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
            AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
            AMD Features2=0x121<LAHF,ABM,Prefetch>
            Structured Extended Features=0x29c6fbf<FSGSBASE,TSCADJ,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,NFPUSG,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PROCTRACE>
            XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
            VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
            TSC: P-state invariant, performance statistics
          real memory  = 8589934592 (8192 MB)
          avail memory = 7944486912 (7576 MB)
          Event timer "LAPIC" quality 600
          ACPI APIC Table: <FUJ    D3375-B1>
          FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
          FreeBSD/SMP: 1 package(s) x 4 core(s)
          random: unblocking device.
          ioapic0 <Version 2.0> irqs 0-119 on motherboard
          SMP: AP CPU #3 Launched!
          SMP: AP CPU #2 Launched!
          SMP: AP CPU #1 Launched!
          Timecounter "TSC-low" frequency 1500049087 Hz quality 1000
          random: entropy device external interface
          wlan: mac acl policy registered
          kbd0 at kbdmux0
          netmap: loaded module
          module_register_init: MOD_LOAD (vesa, 0xffffffff81162bc0, 0) error 19
          random: registering fast source Intel Secure Key RNG
          random: fast provider: "Intel Secure Key RNG"
          nexus0
          cryptosoft0: <software crypto> on motherboard
          padlock0: No ACE support.
          acpi0: <FUJ D3375-B1> on motherboard
          acpi0: Power Button (fixed)
          cpu0: <ACPI CPU> on acpi0
          cpu1: <ACPI CPU> on acpi0
          cpu2: <ACPI CPU> on acpi0
          cpu3: <ACPI CPU> on acpi0
          hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
          Timecounter "HPET" frequency 24000000 Hz quality 950
          Event timer "HPET" frequency 24000000 Hz quality 550
          Event timer "HPET1" frequency 24000000 Hz quality 440
          Event timer "HPET2" frequency 24000000 Hz quality 440
          Event timer "HPET3" frequency 24000000 Hz quality 440
          Event timer "HPET4" frequency 24000000 Hz quality 440
          atrtc0: <AT realtime clock> port 0x70-0x77 irq 8 on acpi0
          atrtc0: Warning: Couldn't map I/O.
          Event timer "RTC" frequency 32768 Hz quality 0
          attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
          Timecounter "i8254" frequency 1193182 Hz quality 0
          Event timer "i8254" frequency 1193182 Hz quality 100
          Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
          acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1808-0x180b on acpi0
          pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
          pci0: <ACPI PCI bus> on pcib0
          pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
          pci1: <ACPI PCI bus> on pcib1
          igb0: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> mem 0xdf100000-0xdf1fffff,0xdf28c000-0xdf28ffff at device 0.0 on pci1
          igb0: Using MSIX interrupts with 5 vectors
          igb0: Ethernet address: b4:96:91:13:32:40
          igb0: Bound queue 0 to cpu 0
          igb0: Bound queue 1 to cpu 1
          igb0: Bound queue 2 to cpu 2
          igb0: Bound queue 3 to cpu 3
          igb0: netmap queues/slots: TX 4/1024, RX 4/1024
          igb1: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> mem 0xdf000000-0xdf0fffff,0xdf288000-0xdf28bfff at device 0.1 on pci1
          igb1: Using MSIX interrupts with 5 vectors
          igb1: Ethernet address: b4:96:91:13:32:41
          igb1: Bound queue 0 to cpu 0
          igb1: Bound queue 1 to cpu 1
          igb1: Bound queue 2 to cpu 2
          igb1: Bound queue 3 to cpu 3
          igb1: netmap queues/slots: TX 4/1024, RX 4/1024
          igb2: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> mem 0xdef00000-0xdeffffff,0xdf284000-0xdf287fff at device 0.2 on pci1
          igb2: Using MSIX interrupts with 5 vectors
          igb2: Ethernet address: b4:96:91:13:32:42
          igb2: Bound queue 0 to cpu 0
          igb2: Bound queue 1 to cpu 1
          igb2: Bound queue 2 to cpu 2
          igb2: Bound queue 3 to cpu 3
          igb2: netmap queues/slots: TX 4/1024, RX 4/1024
          igb3: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> mem 0xdee00000-0xdeefffff,0xdf280000-0xdf283fff at device 0.3 on pci1
          igb3: Using MSIX interrupts with 5 vectors
          igb3: Ethernet address: b4:96:91:13:32:43
          igb3: Bound queue 0 to cpu 0
          igb3: Bound queue 1 to cpu 1
          igb3: Bound queue 2 to cpu 2
          igb3: Bound queue 3 to cpu 3
          igb3: netmap queues/slots: TX 4/1024, RX 4/1024
          pcib2: <ACPI PCI-PCI bridge> at device 1.1 on pci0
          pci2: <ACPI PCI bus> on pcib2
          AVAGO MegaRAID SAS FreeBSD mrsas driver version: 06.709.07.00-fbsd
          mfi0: <Fury> port 0xe000-0xe0ff mem 0xdf500000-0xdf50ffff,0xdf400000-0xdf4fffff at device 0.0 on pci2
          mfi0: Using MSI
          mfi0: Megaraid SAS driver Ver 4.23
          mfi0: FW MaxCmds = 240, limiting to 128
          mfi0: MaxCmd = 240, Drv MaxCmd = 128, MaxSgl = 70, state = 0xb73c00f0
          mfi0: 465 (581773451s/0x0020/info) - Shutdown command received from host
          mfi0: 466 (boot + 9s/0x0020/info) - Firmware initialization started (PCI ID 005f/1000/1211/1734)
          mfi0: 467 (boot + 9s/0x0020/info) - Firmware version 4.270.01-4870
          mfi0: 468 (boot + 11s/0x0020/info) - Package version 24.7.0-0061
          mfi0: 469 (boot + 11s/0x0020/info) - Board Revision
          mfi0: 470 (boot + 49s/0x0002/info) - Inserted: PD 02(e0x3e/s0)
          xhci0: mfi0: <Intel Sunrise Point USB 3.0 controller> mem 0xdf800000-0xdf80ffff at device 20.0 on pci0
          xhci0: 32 bytes context size, 64-bit DMA
          471 (boot + 49s/0x0002/info) - Inserted: PD 02(e0x3e/s0) Info: enclPd=3e, scsiType=0, portMap=00, sasAddr=4433221102000000,000usbus00000000000000
          mfi0: 472 (boot + 49s/0x0002/info) - Inserted: PD 03(e0x3e/s1)
           on xhci0
          mfi0: usbus0: 5.0Gbps Super Speed USB v3.0
          473 (boot + 49s/0x0002/info) - Inserted: PD 03(e0x3e/s1) Info: enclPd=3e, scsiType=0, portMap=01, sasAddr=4433221103000000,0000000000000000
          mfi0: 474 (boot + 49s/0x0020/info) - Controller operating temperature within normal range, full operation restored
          mfi0: 475 (581772985s/0x0020/info) - Time established as 06/08/18 11:36:25; (50 seconds since power on)
          pci0: <simple comms> at device 22.0 (no driver attached)
          pci0: <simple comms> at device 22.1 (no driver attached)
          ahci0: <Intel Sunrise Point (RAID) AHCI SATA controller> port 0xf050-0xf057,0xf040-0xf043,0xf020-0xf03f mem 0xdf814000-0xdf815fff,0xdf818000-0xdf8180ff,0xdf817000-0xdf8177ff at device 23.0 on pci0
          ahci0: AHCI v1.31 with 8 6Gbps ports, Port Multiplier not supported
          ahcich0: <AHCI channel> at channel 0 on ahci0
          ahcich1: <AHCI channel> at channel 1 on ahci0
          ahcich2: <AHCI channel> at channel 2 on ahci0
          ahcich3: <AHCI channel> at channel 3 on ahci0
          ahcich4: <AHCI channel> at channel 4 on ahci0
          ahcich5: <AHCI channel> at channel 5 on ahci0
          ahciem0: <AHCI enclosure management bridge> on ahci0
          pcib3: <ACPI PCI-PCI bridge> at device 28.0 on pci0
          pci3: <ACPI PCI bus> on pcib3
          vgapci0: <VGA-compatible display> mem 0xdd000000-0xddffffff,0xde820000-0xde823fff,0xde000000-0xde7fffff at device 0.0 on pci3
          pci3: <processor> at device 0.1 (no driver attached)
          pcib4: <ACPI PCI-PCI bridge> at device 28.5 on pci0
          pci4: <ACPI PCI bus> on pcib4
          igb4: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> port 0xc000-0xc01f mem 0xdf600000-0xdf67ffff,0xdf680000-0xdf683fff at device 0.0 on pci4
          igb4: Using MSIX interrupts with 5 vectors
          igb4: Ethernet address: 90:1b:0e:d3:53:23
          igb4: Bound queue 0 to cpu 0
          igb4: Bound queue 1 to cpu 1
          igb4: Bound queue 2 to cpu 2
          igb4: Bound queue 3 to cpu 3
          igb4: netmap queues/slots: TX 4/1024, RX 4/1024
          pcib5: <ACPI PCI-PCI bridge> at device 28.6 on pci0
          pci5: <ACPI PCI bus> on pcib5
          igb5: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> port 0xd000-0xd01f mem 0xdf700000-0xdf77ffff,0xdf780000-0xdf783fff at device 0.0 on pci5
          igb5: Using MSIX interrupts with 5 vectors
          igb5: Ethernet address: 90:1b:0e:d3:57:24
          igb5: Bound queue 0 to cpu 0
          igb5: Bound queue 1 to cpu 1
          igb5: Bound queue 2 to cpu 2
          igb5: Bound queue 3 to cpu 3
          igb5: netmap queues/slots: TX 4/1024, RX 4/1024
          pcib6: <ACPI PCI-PCI bridge> at device 29.0 on pci0
          pci6: <ACPI PCI bus> on pcib6
          igb6: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> mem 0xdec00000-0xdecfffff,0xded8c000-0xded8ffff at device 0.0 on pci6
          igb6: Using MSIX interrupts with 5 vectors
          igb6: Ethernet address: b4:96:91:13:29:70
          igb6: Bound queue 0 to cpu 0
          igb6: Bound queue 1 to cpu 1
          igb6: Bound queue 2 to cpu 2
          igb6: Bound queue 3 to cpu 3
          igb6: netmap queues/slots: TX 4/1024, RX 4/1024
          igb7: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> mem 0xdeb00000-0xdebfffff,0xded88000-0xded8bfff at device 0.1 on pci6
          igb7: Using MSIX interrupts with 5 vectors
          igb7: Ethernet address: b4:96:91:13:29:71
          igb7: Bound queue 0 to cpu 0
          igb7: Bound queue 1 to cpu 1
          igb7: Bound queue 2 to cpu 2
          igb7: Bound queue 3 to cpu 3
          igb7: netmap queues/slots: TX 4/1024, RX 4/1024
          igb8: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> mem 0xdea00000-0xdeafffff,0xded84000-0xded87fff at device 0.2 on pci6
          igb8: Using MSIX interrupts with 5 vectors
          igb8: Ethernet address: b4:96:91:13:29:72
          igb8: Bound queue 0 to cpu 0
          igb8: Bound queue 1 to cpu 1
          igb8: Bound queue 2 to cpu 2
          igb8: Bound queue 3 to cpu 3
          igb8: netmap queues/slots: TX 4/1024, RX 4/1024
          igb9: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k> mem 0xde900000-0xde9fffff,0xded80000-0xded83fff at device 0.3 on pci6
          igb9: Using MSIX interrupts with 5 vectors
          igb9: Ethernet address: b4:96:91:13:29:73
          igb9: Bound queue 0 to cpu 0
          igb9: Bound queue 1 to cpu 1
          igb9: Bound queue 2 to cpu 2
          igb9: Bound queue 3 to cpu 3
          igb9: netmap queues/slots: TX 4/1024, RX 4/1024
          isab0: <PCI-ISA bridge> at device 31.0 on pci0
          isa0: <ISA bus> on isab0
          pci0: <memory> at device 31.2 (no driver attached)
          acpi_button0: <Power Button> on acpi0
          uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
          uart0: console (115200,n,8,1)
          ppc0: cannot reserve I/O port range
          est0: <Enhanced SpeedStep Frequency Control> on cpu0
          est1: <Enhanced SpeedStep Frequency Control> on cpu1
          est2: <Enhanced SpeedStep Frequency Control> on cpu2
          est3: <Enhanced SpeedStep Frequency Control> on cpu3
          Timecounters tick every 1.000 msec
          nvme cam probe device init
          ugen0.1: <0x8086 XHCI root HUB> at usbus0
          mfid0 on mfi0
          mfid0: 953344MB (1952448512 sectors) RAID volume (no label) is optimal
          uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
          uhub0: 26 ports with 26 removable, self powered
          ugen0.2: <American Megatrends Inc. Virtual Keyboard and Mouse> at usbus0
          ukbd0 on uhub0
          ukbd0: <Keyboard Interface> on usbus0
          kbd1 at ukbd0
          ses0 at ahciem0 bus 0 scbus6 target 0 lun 0
          ses0: <AHCI SGPIO Enclosure 1.00 0001> SEMB S-E-S 2.00 device
          cd0 at ahcich5 bus 0 scbus5 target 0 lun 0
          ses0: SEMB SES Device
          cd0: <HL-DT-ST DVDRAM GUD0N PF02> Removable CD-ROM SCSI device
          cd0: Serial Number B7ARVC1211252
          cd0: 150.000MB/s transfers (SATA 1.x, UDMA6, ATAPI 12bytes, PIO 8192bytes)
          cd0: Attempt to query device size failed: NOT READY, Medium not present - tray closed
          Trying to mount root from ufs:/dev/gptid/f21e550d-4955-11e8-b400-b49691133240 [rw]...
          CPU: Intel(R) Xeon(R) CPU E3-1220 v6 @ 3.00GHz (3000.10-MHz K8-class CPU)
            Origin="GenuineIntel"  Id=0x906e9  Family=0x6  Model=0x9e  Stepping=9
            Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
            Features2=0x7ffafbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
            AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
            AMD Features2=0x121<LAHF,ABM,Prefetch>
            Structured Extended Features=0x29c6fbf<FSGSBASE,TSCADJ,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,NFPUSG,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PROCTRACE>
            Structured Extended Features3=0xc000000<IBPB,STIBP>
            XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
            VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
            TSC: P-state invariant, performance statistics
          tun1: changing name to 'ovpns1'
          tun2: changing name to 'ovpns2'
          tun3: changing name to 'ovpns3'
          ovpns2: link state changed to UP
          ovpns1: link state changed to UP
          ovpns3: link state changed to UP
          pflog0: promiscuous mode enabled
          igb4: link state changed to UP
          igb9: promiscuous mode enabled
          igb9: promiscuous mode disabled
          
          1 Reply Last reply Reply Quote 0
          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            Hmm, is the firewall actually idle? No traffic at all?

            I'd have to guess this is related to your raid setup since I don't have anything similar to test against.
            The mfi device is the highest interrupt load other than the cpu timers. I could be tickling the cpus sufficiently to cause that.

            If you;re not actually seeing an issue there I doubt it's a problem.

            You could move /tmp and /var to RAM drives as a test which prevent drive writes. That may reduce both interrupt loads.

            Steve

            S 1 Reply Last reply Reply Quote 1
            • S
              Svarov @stephenw10
              last edited by

              @stephenw10 said in High CPU usage on interrupt processing:

              Hmm, is the firewall actually idle? No traffic at all?

              Yeah, firewall is idle. The server is located in a small subnet and no one is currently connected to it.
              There’s some occasional broadcast traffic (e.g. DHCP requests) form other devices/servers on the network, but I doubt it can cause any trouble.

              I think you’re right about RAID.
              I moved /tmp and /var to RAM but still there’s a lot of interrupts on mfi0 device, yet gstat shows no disk IO except some rare writes.

              I’ll try remotely tinker with RAID-related settings in BIOS, maybe I find something I missed.
              Thank you for suggestions!

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