2018-05-26 - 22:00
CPU - Timers - Features - RAM - Graphics - Disks - Kernel - Hardware latencies

Name

rack7slot3.osadl.org

Purpose

Development

Vendor/Board

RS Components/Raspberry Pi

Distribution

Raspbian GNU/Linux 7 (wheezy)

Kernel

4.1.19+ #858 Tue Mar 15 15:52:03 GMT 2016 unknown

Kernel command line

dma.dmachans=0x7f35 bcm2708_fb.fbwidth=1024 bcm2708_fb.fbheight=768 bcm2708.boardrev=0x10 bcm2708.serial=0xfe54ab24 smsc95xx.macaddr=B8:27:EB:54:AB:24 bcm2708_fb.fbswap=1 bcm2708.uart_clock=3000000 bcm2708.disk_led_gpio=47 bcm2708.disk_led_active_low=0 vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000 dwc_otg.lpm_enable=0 earlyprintk=ttyAMA0,115200 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait

Buildtool

gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611)

Command to generate latency plot histogram data

cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Display most recent latency plot

Uptime

11 days

CPU info To top

processor : 0
model name	: ARMv6-compatible processor rev 7 (v6l)
BogoMIPS	: 5.60
Features	: half thumb fastmult vfp edsp java tls 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xb76
CPU revision	: 7
Hardware	: BCM2708
Revision	: 0010
Serial		: 00000000fe54ab24

CPU scaling To top

Specified clock frequency: 700 MHz
Default scaling setting:
CPU0: ondemand from 250 to 700 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 source To top

stc

Lazy preemption

no

RAM To top

445 MB

Graphics To top

Graphics adapter
BCM2708 FB
Resolution
1024x768

Block devices To top

Disk /dev/mmcblk0: 15.9 GB, 15931539456 bytes
4 heads, 16 sectors/track, 486192 cylinders, total 31116288 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000981cb

        Device Boot      Start         End      Blocks   Id  System
/dev/mmcblk0p1   *        8192      122879       57344    c  W95 FAT32 (LBA)
/dev/mmcblk0p2          122880    29483007    14680064   83  Linux
/dev/mmcblk0p3        29483008    31116287      816640   82  Linux swap / Solaris

Network

Interfaces
eth0 Link encap:Ethernet
lo Link encap:Local
Topology
r7switch/port #3

Kernel configuration To top

(Not configured when building the kernel)

Hardware latencies To top

Output of "hwlatdetect --duration=30m" on 04/05/2018 at 15:45:
# tracer: hwlat
#
# entries-in-buffer/entries-written: 0/0   #P:1
#
#                              _-----=> irqs-off
#                             / _----=> need-resched
#                            |/  _-----=> need-resched_lazy
#                            || / _---=> hardirq/softirq
#                            ||| / _--=> preempt-depth
#                            |||| / _-=> preempt-lazy-depth
#                            ||||| / _-=> migrate-disable   
#                            |||||| /    delay
#           TASK-PID   CPU#  |||||||   TIMESTAMP  FUNCTION
#              | |       |   |||||||      |         |
   To top

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