CPU 100% peaks on Datalore Kernel

hello there!
i was wondering, if I was messing something up, or its just the Kernel.

Although as i am running stuff in every notebook on the Datalore-Kernel it sometimes stops
and the CPU goes up to 100% for no reason.

Can´t run any cells, what makes it really annoying to work with.
then i get a a lot of errors like:

Kernel errors:

09:41RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

09:41RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

09:41RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

09:41RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

09:41RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

09:41RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

09:41RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

09:42RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

10:05ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:05ValueError: 'XuEpETgESB4HU0Nvy8Y4fv' is not in list

10:05ValueError: 'MF5vpzqDmJ9X2thKroGbQd' is not in list

10:05ValueError: 'yhanKQtZ6bKIPFPdeiAX8j' is not in list

10:05ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:05ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:05ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:05ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:05ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:05ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:05ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:05ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:06ValueError: 'bKvob7K4kc4I2Y5rihQ4Gp' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:06ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:06ValueError: 'D9E8t44O9yvkoeM7UhhhQU' is not in list

10:06ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:06ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:06ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:06ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:06ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:06ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:07ValueError: 'xtCE42053ObqYUMAzddPNs' is not in list

10:07ValueError: 'wKjGrqH9fIP26bindl3ZTB' is not in list

10:07ValueError: 'HXuzQsM4WxVL2YF3hXvFR3' is not in list

10:07ValueError: 'Qch2ReMvAbHlSJbHT7SUfy' is not in list

10:07ValueError: 'vn9eCaA3gapzOaegHMtqnx' is not in list

10:07ValueError: 'zAdWJi75YfQaEFJJTq3lM7' is not in list

10:07ValueError: 'AXLXmgDLclOyjFqvgYwvPv' is not in list

10:07ValueError: 'he7jZuRGtWvaW08cjYkyjM' is not in list

10:07ValueError: 'J4DMpWmgDPcg50zemwHyeC' is not in list

10:07ValueError: 'LB3QyXeaV08qcJCvxMkmUZ' is not in list

10:07ValueError: 'bKvob7K4kc4I2Y5rihQ4Gp' is not in list

10:07ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:07ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:07ValueError: 'D9E8t44O9yvkoeM7UhhhQU' is not in list

10:07ValueError: 'XuEpETgESB4HU0Nvy8Y4fv' is not in list

10:07ValueError: 'MF5vpzqDmJ9X2thKroGbQd' is not in list

10:07ValueError: 'yhanKQtZ6bKIPFPdeiAX8j' is not in list

10:07ValueError: 'ClNmZpOrfP9yT3adf7iv0X' is not in list

10:07ValueError: 'egBW7GXPRpBiOucTaePif3' is not in list

10:07ValueError: 'MCw8y6nRLXRi4X3OLXK0Ni' is not in list

10:07ValueError: 'vq0UumGuWS4i2aCUbo0V8Z' is not in list

10:07ValueError: 'e86HFrxS1l37v1E0RokXpd' is not in list

10:07ValueError: 'kMH7D1NBJ6wqpYK11HR5Tl' is not in list

10:07ValueError: 'sA6JyqHsiAmltoPvZ55Y9l' is not in list

10:07ValueError: 'ZVEFx8EavP9kiouH0ncofn' is not in list

10:07ValueError: 'pqL1SSGrF7f04WSDXHh2Ii' is not in list

10:07ValueError: 'ZVEFx8EavP9kiouH0ncofn' is not in list

10:08ValueError: 'zAdWJi75YfQaEFJJTq3lM7' is not in list

10:08ValueError: 'AXLXmgDLclOyjFqvgYwvPv' is not in list

10:08ValueError: 'he7jZuRGtWvaW08cjYkyjM' is not in list

10:08ValueError: 'J4DMpWmgDPcg50zemwHyeC' is not in list

10:08ValueError: 'LB3QyXeaV08qcJCvxMkmUZ' is not in list

10:08ValueError: 'bKvob7K4kc4I2Y5rihQ4Gp' is not in list

10:08ValueError: 'cku1N16rZhyiJUNd0OlDGB' is not in list

10:08ValueError: 'EpSwqVCJL2X84i1yOVkHEJ' is not in list

10:08ValueError: 'D9E8t44O9yvkoeM7UhhhQU' is not in list

11:40RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

12:26RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

12:26ValueError: 'egBW7GXPRpBiOucTaePif3' is not in list

12:26ValueError: 'MCw8y6nRLXRi4X3OLXK0Ni' is not in list

12:26ValueError: 'vq0UumGuWS4i2aCUbo0V8Z' is not in list

12:26ValueError: 'e86HFrxS1l37v1E0RokXpd' is not in list

12:26RuntimeError: Invalid index to insert: 66```
1 Like

Hello @naturlieb!

We have seen similar errors before, but unfortunately have not been able to trace the root cause yet, we will try to figure out what is wrong there.

If you have stable steps to reproduce the issue, that would help us a lot.

1 Like

Is Variable viewer opened while you are working?

1 Like

hi, thanks for your suggestion.
no it wasn`t.

I just copied all the code from the currupted notebook to a new one.

It gave me the first CPU error:

Kernel errors:
08:44Exception: (‘Unknown command’, ‘reqid: “2IUvp7Dyqgv2bG6yOrjapJ”\ncellid: “aUrfTxvr0mkOBSH7RCbu0y”\ninput {\n value: “10”\n}\n’)

after running:

def gen_fib():

count = int(input("How many fibonacci numbers would you like to generate? "))

i = 1

if count == 0:

    fib = []

elif count == 1:

    fib = [1]

elif count == 2:

    fib = [1,1]

elif count > 2:

    fib = [1,1]

    while i < (count - 1):

        fib.append(fib[i] + fib[i-1])

        i += 1

return fib

gen_fib()

now the notbook is “corrupted” what makes it impossible to run cells.

1 Like

another one on the “corruped” one from yesterday:
07:54RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

Ok, I just managed to break another Notebook.
Mostly its the same errors like Kernel, Runtime and Value:

Kernel errors:
17:42Exception: (‘Unknown command’, ‘reqid: “cLNucYIfTExQZ1hsALijXI”\ncellid: “AZ39dCMHGT31dPoIXHOpL6”\ninput {\n value: “16”\n}\n’)

Kernel errors:
08:44 Exception: (‘Unknown command’, ‘reqid: “2IUvp7Dyqgv2bG6yOrjapJ”\ncellid: “aUrfTxvr0mkOBSH7RCbu0y”\ninput {\n value: “10”\n}\n’)

RuntimeError:
09:41 RuntimeError: Could not unlink file /var/datalore/persister/8/workbook_storage_last_expr/datafile.1539: 2 No such file or directory

ValueError:
10:05ValueError: ‘MF5vpzqDmJ9X2thKroGbQd’ is not in list


more info, from what i felt:

  • the notebooks are normaly stuck on the startup, so i need to manually start them
    -not started

  • i am running like 2-3h sessions on datalore.
    it seems this occurs more often on the end of an session.

  • i am switching between mac an PC once in a while.
    depend on where i am working from

  • sometimes i add about 3 empty cells to separate them more visually

  • at the end of a session i run all cells to see, if there are some errors in my cells left

kind regards

1 Like