2021-07-27 - 08:24
CPU - Timers - Features - RAM - Network - PCI - Kernel - Off-tree patches - Hardware latencies

Name

rack4slot1.osadl.org

Purpose

Monitoring

Vendor/Board

RS Components/Raspberry Pi 4 Model B Rev 1.1

Distribution

Raspbian GNU/Linux 10 (buster)

Kernel

5.10.52-rt47-v7l #1 SMP PREEMPT_RT Sun Jul 25 17:45:46 CEST 2021 unknown

Kernel command line

coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 smsc95xx.macaddr=E4:5F:01:34:A2:66 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyS0,115200 console=tty1 root=PARTUUID=6a804e07-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles

Buildtool

gcc (Raspbian 8.3.0-6+rpi1) 8.3.0, GNU ld (GNU Binutils for Raspbian) 2.31.1

Builder

root@rack4slot1s

Command to generate latency plot histogram data

cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Display most recent latency plot

Uptime/boot time

5:17, up since Mon, 26 Jul 21 20:18:41 +0200 (1627323521)

CPU info To top

Tag: ARM Broadcom BCM2711 @1500 MHz
Processor: 0
model name	: ARMv7 Processor rev 3 (v7l)
BogoMIPS	: 144.00
Features	: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xd08
CPU revision	: 3
Processor: 1
model name	: ARMv7 Processor rev 3 (v7l)
BogoMIPS	: 144.00
Features	: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xd08
CPU revision	: 3
Processor: 2
model name	: ARMv7 Processor rev 3 (v7l)
BogoMIPS	: 144.00
Features	: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xd08
CPU revision	: 3
Processor: 3
model name	: ARMv7 Processor rev 3 (v7l)
BogoMIPS	: 144.00
Features	: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xd08
CPU revision	: 3
Hardware	: BCM2711
Revision	: d03114
Serial		: 10000000c9f17dde
Model		: Raspberry Pi 4 Model B Rev 1.4

CPU scaling To top

Specified clock frequency: 1500 MHz
Default scaling setting:
CPU0: ondemand from 600 to 1500 MHz
CPU1: ondemand from 600 to 1500 MHz
CPU2: ondemand from 600 to 1500 MHz
CPU3: ondemand from 600 to 1500 MHz

Interrupts To top

Timer resolution To top

cpu: 0
 clock 0:
  .resolution: 1 nsecs
 clock 1:
  .resolution: 1 nsecs
 clock 2:
  .resolution: 1 nsecs
 clock 3:
  .resolution: 1 nsecs
 clock 4:
  .resolution: 1 nsecs
 clock 5:
  .resolution: 1 nsecs
 clock 6:
  .resolution: 1 nsecs
 clock 7:
  .resolution: 1 nsecs
cpu: 1
 clock 0:
  .resolution: 1 nsecs
 clock 1:
  .resolution: 1 nsecs
 clock 2:
  .resolution: 1 nsecs
 clock 3:
  .resolution: 1 nsecs
 clock 4:
  .resolution: 1 nsecs
 clock 5:
  .resolution: 1 nsecs
 clock 6:
  .resolution: 1 nsecs
 clock 7:
  .resolution: 1 nsecs
cpu: 2
 clock 0:
  .resolution: 1 nsecs
 clock 1:
  .resolution: 1 nsecs
 clock 2:
  .resolution: 1 nsecs
 clock 3:
  .resolution: 1 nsecs
 clock 4:
  .resolution: 1 nsecs
 clock 5:
  .resolution: 1 nsecs
 clock 6:
  .resolution: 1 nsecs
 clock 7:
  .resolution: 1 nsecs
cpu: 3
 clock 0:
  .resolution: 1 nsecs
 clock 1:
  .resolution: 1 nsecs
 clock 2:
  .resolution: 1 nsecs
 clock 3:
  .resolution: 1 nsecs
 clock 4:
  .resolution: 1 nsecs
 clock 5:
  .resolution: 1 nsecs
 clock 6:
  .resolution: 1 nsecs
 clock 7:
  .resolution: 1 nsecs

Clock source To top

arch_sys_counter

Lazy preemption

no

RAM To top

8086 MB

Network

Interfaces
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu
lo: flags=73<UP,LOOPBACK,RUNNING> mtu
wlan0: flags=4098<BROADCAST,MULTICAST> mtu
Topology
r4switch/port #1

PCI To top

00:00.0 PCI bridge: Broadcom Limited Device 2711 (rev 20) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 62
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
	I/O behind bridge: 00000000-00000fff
	Memory behind bridge: c0000000-c00fffff
	Capabilities: [48] Power Management version 3
	Capabilities: [ac] Express Root Port (Slot-), MSI 00
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [180] Vendor Specific Information: ID=0000 Rev=0 Len=028 
	Capabilities: [240] L1 PM Substates
	Kernel driver in use: pcieport
 
01:00.0 USB controller: VIA Technologies, Inc. VL805 USB 3.0 Host Controller (rev 01) (prog-if
	    30 [XHCI])
	Subsystem: VIA Technologies, Inc. VL805 USB 3.0 Host Controller
	Flags: bus master, fast devsel, latency 0, IRQ 63
	Memory at 600000000 (64-bit, non-prefetchable) [size=4K]
	Capabilities: [80] Power Management version 3
	Capabilities: [90] MSI: Enable+ Count=1/4 Maskable- 64bit+
	Capabilities: [c4] Express Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting
	Kernel driver in use: xhci_hcd

Kernel configuration To top

(Not configured when building the kernel)

Hardware latencies To top

Output of "hwlatdetect --duration=30m" on 03/10/2021 at 03:45:
# tracer: hwlat
#
# entries-in-buffer/entries-written: 20/20   #P:4
#
#                              _-----=> irqs-off
#                             / _----=> need-resched
#                            |/  _-----=> need-resched_lazy
#                            || / _---=> hardirq/softirq
#                            ||| / _--=> preempt-depth
#                            |||| / _-=> preempt-lazy-depth
#                            ||||| / _-=> migrate-disable   
#                            |||||| /    delay
#           TASK-PID   CPU#  |||||||   TIMESTAMP  FUNCTION
#              | |       |   |||||||      |         |
           <...>-4196  [000] dn..... 18539491.957865: #1     inner/outer(us):    0/28    ts:1615344310.582784917
           <...>-4196  [000] d...... 18539495.989736: #2     inner/outer(us):    8/61    ts:1615344314.586278404 nmi-total:6 nmi-count:1
           <...>-4196  [000] dn..... 18539645.167023: #3     inner/outer(us):   11/0     ts:1615344463.831674159 nmi-total:7 nmi-count:1
           <...>-4196  [002] dn..... 18539840.774194: #4     inner/outer(us):   60/0     ts:1615344659.516792193
           <...>-4196  [002] d.L.... 18539848.837831: #5     inner/outer(us):   60/0     ts:1615344667.580786031
           <...>-4196  [000] dn..... 18539866.981103: #6     inner/outer(us):   11/0     ts:1615344685.527997899 nmi-total:7 nmi-count:1
           <...>-4196  [002] dn..... 18539933.522100: #7     inner/outer(us):   13/0     ts:1615344752.268223043
           <...>-4196  [000] d...... 18540024.238109: #8     inner/outer(us):    0/11    ts:1615344842.980402154 nmi-total:7 nmi-count:1
           <...>-4196  [002] dn..... 18540086.731315: #9     inner/outer(us):    0/54    ts:1615344905.484104700
           <...>-4196  [000] dn..... 18540108.954358: #10    inner/outer(us):    0/55    ts:1615344927.697842124
           <...>-4196  [000] dn..... 18540112.986151: #11    inner/outer(us):   54/5     ts:1615344931.574319820
           <...>-4196  [000] dn..... 18540250.084030: #12    inner/outer(us):    0/11    ts:1615345068.613206779 nmi-total:7 nmi-count:1
           <...>-4196  [000] dn..... 18540399.309545: #13    inner/outer(us):    6/54    ts:1615345218.044619834
           <...>-4196  [000] dnL.... 18540407.373049: #14    inner/outer(us):    0/60    ts:1615345226.116614439
           <...>-4196  [000] dn..... 18540548.502738: #15    inner/outer(us):    0/11    ts:1615345367.237002454 nmi-total:7 nmi-count:1
           <...>-4196  [002] dn..... 18540562.614111: #16    inner/outer(us):    0/60    ts:1615345381.388746086
           <...>-4196  [002] dn..... 18540982.051342: #17    inner/outer(us):   54/0     ts:1615345800.844426286
           <...>-4196  [000] dn..... 18541048.704490: #18    inner/outer(us):    0/11    ts:1615345867.468642041 nmi-total:6 nmi-count:1
           <...>-4196  [000] dn..... 18541125.309062: #19    inner/outer(us):   11/0     ts:1615345944.107092471 nmi-total:7 nmi-count:1
           <...>-4196  [002] dn..... 18541232.216166: #20    inner/outer(us):    0/60    ts:1615346051.020275691
 
 
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