Unexpected realtime delay error message

Hi Guys,

I am getting the following error messages on my plasma machine when the machine is halfway through a long cut,

Unexpected realtime delay on task 0 with period 1000000,
This message will only display once per session,
Run latency test and resolve before continuing,

hm2/hm2_7i76e.0 Smart Serial port 0;
DoLt not cleared from previous servo thread. Servo thread rate probably too fast. This message will not be repeated, but the hm2_7i76e.0sserial.0.fault-count;pin will indicate if this is happening frequently.

hm2/hm2_7i76e.0 error finishing read! iter=283342

After I get these errors the machine will continue to give folllowing errors,

I am running Linux mint LMDE RT kernel I downloaded with Synaptic manager.

Any idea what is going on?

hi
what is your latency of the pc
and how is the watchdog initalizised
hm2_7i92.0.watchdog.timeout_ns 10000000

i think there is some zeros missing

can you post your ini and hal if posible

so we can check all entries

Please see below for my latency test results, I had it running for half an hour,



And I have attached my Hal and INI to this post.

This could be due to a couple of things, it could be a Ethernet latency issue
or it could be you have completely lost contact with the card due to

1. Power supply problems at the 7I76E end
2. A problem with the 7I76E,host or cable

When your system is running normally for some time (no errors) run this command from a terminal:

halcmd show param *.tmax

This (and the clock speed of your CPU) will indicate if its a marginal timing issue

Also if you get an error, check dmesg for any link up/down events:

dmesg | tail -50

Also posting your hal/ini files might give a clue

PCW wrote:

Also posting your hal/ini files might give a clue

I posted them in the third post.

So the hal/ini files look OK.

To determine whats happening, the timing information
(and your CPU clock speed since the tmax numbers are in units of CPU clocks )
would be helpful.

also noting if the link was lost (via dmesg) would help

Ok there are the values of halcmd,

plasma@plasma:~/linuxcnc-plasmac$ halcmd show param *.tmax
Parameters:
Owner Type Dir Value Name
39 s32 RW 6755 debounce.0.tmax
30 s32 RW 0 hm2_7i76e.0.read-request.tmax
30 s32 RW 1190409 hm2_7i76e.0.read.tmax
30 s32 RW 102827 hm2_7i76e.0.write.tmax
23 s32 RW 6919 motion-command-handler.tmax
23 s32 RW 83173 motion-controller.tmax
33 s32 RW 4446 pid.s.do-pid-calcs.tmax
33 s32 RW 9905 pid.x.do-pid-calcs.tmax
33 s32 RW 3391 pid.y.do-pid-calcs.tmax
33 s32 RW 5521 pid.y2.do-pid-calcs.tmax
33 s32 RW 5490 pid.z.do-pid-calcs.tmax
36 s32 RW 18479 plasmac.tmax
24 s32 RW 1350822 servo-thread.tmax


And the values of dmesg after the error occurs.

plasma@plasma:~/linuxcnc-plasmac$ dmesg | tail -50
[11094.897955] sd 6:0:0:0: [sdc] Mode Sense: 23 00 00 00
[11094.900832] sd 6:0:0:0: [sdc] No Caching mode page found
[11094.900833] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[11094.920588] sdc: sdc1
[11094.933333] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[11095.354215] FAT-fs (sdc1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[15266.093096] perf: interrupt took too long (3939 > 3937), lowering kernel.perf_event_max_sample_rate to 50750
[15934.868745] intel_powerclamp: Start idle injection to reduce power
[15938.872943] intel_powerclamp: Stop forced idle injection
[16311.257054] intel_powerclamp: Start idle injection to reduce power
[16315.261257] intel_powerclamp: Stop forced idle injection
[16827.650355] intel_powerclamp: Start idle injection to reduce power
[16831.654614] intel_powerclamp: Stop forced idle injection
[17485.613726] usb 2-1.7: USB disconnect, device number 9
[18110.231756] intel_powerclamp: Start idle injection to reduce power
[18114.234807] intel_powerclamp: Stop forced idle injection
[22335.969886] e1000e: eno1 NIC Link is Down
[22350.805129] usb 2-1.7: new high-speed USB device number 10 using ehci-pci
[22350.942743] usb 2-1.7: New USB device found, idVendor=18a5, idProduct=0302
[22350.942746] usb 2-1.7: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[22350.942747] usb 2-1.7: Product: STORE N GO
[22350.942748] usb 2-1.7: Manufacturer: Verbatim
[22350.942749] usb 2-1.7: SerialNumber: 900093C1F5275B15
[22350.943026] usb-storage 2-1.7:1.0: USB Mass Storage device detected
[22350.943085] scsi host6: usb-storage 2-1.7:1.0
[22351.956745] scsi 6:0:0:0: Direct-Access Verbatim STORE N GO 5.00 PQ: 0 ANSI: 6
[22351.969304] sd 6:0:0:0: Attached scsi generic sg3 type 0
[22354.486338] sd 6:0:0:0: [sdc] 30322688 512-byte logical blocks: (15.5 GB/14.5 GiB)
[22354.490326] sd 6:0:0:0: [sdc] Write Protect is off
[22354.490327] sd 6:0:0:0: [sdc] Mode Sense: 23 00 00 00
[22354.493201] sd 6:0:0:0: [sdc] No Caching mode page found
[22354.493202] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[22354.512956] sdc: sdc1
[22354.525827] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[22354.942591] FAT-fs (sdc1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[22797.808328] usb 2-1.7: USB disconnect, device number 10
[87975.423069] usb 2-1.8: USB disconnect, device number 8
[87975.820331] usb 2-1.8: new low-speed USB device number 11 using ehci-pci
[87975.934182] usb 2-1.8: New USB device found, idVendor=1a2c, idProduct=2124
[87975.934184] usb 2-1.8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[87975.934186] usb 2-1.8: Product: USB Keyboard
[87975.934187] usb 2-1.8: Manufacturer: SEM
[87975.936925] input: SEM USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.8/2-1.8:1.0/0003:1A2C:2124.0008/input/input20
[87975.996485] hid-generic 0003:1A2C:2124.0008: input,hidraw1: USB HID v1.10 Keyboard [SEM USB Keyboard] on usb-0000:00:1d.0-1.8/input0
[87975.999633] input: SEM USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.8/2-1.8:1.1/0003:1A2C:2124.0009/input/input21
[87976.056422] hid-generic 0003:1A2C:2124.0009: input,hidraw2: USB HID v1.10 Device [SEM USB Keyboard] on usb-0000:00:1d.0-1.8/input1
[87979.194425] e1000e: eno1 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx
[87979.194429] e1000e 0000:00:19.0 eno1: 10/100 speed: disabling TSO
[88288.356358] intel_powerclamp: Start idle injection to reduce power
[88292.357979] intel_powerclamp: Stop forced idle injection
plasma@plasma:~/linuxcnc-plasmac$

Attached is the CPU specs,

I'm no expert with Linux but that looks like a HDD hardware fault or a corrupt diskThat would do it. maybe run fsck as suggested and see what happens