Ubuntu 18.04.2 unresponsive on hd activity

[Mike Marchywka]

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>________________________________________
>From: ubuntu-users <ubuntu-users-bounces at lists.ubuntu.com> on behalf of Ralf Mardorf via ubuntu-users <ubuntu-users at lists.ubuntu.com>
>Sent: Monday, February 25, 2019 7:05 AM
>To: ubuntu-users at lists.ubuntu.com
>Cc: Ralf Mardorf
>Subject: Re: Ubuntu 18.04.2 unresponsive on hd activity
>
>On Mon, 25 Feb 2019 11:45:04 +0100, Oliver Grawert wrote:
>>hi,
>>Am Sonntag, den 24.02.2019, 21:47 -0600 schrieb nibbli at gmx.de:
>>> Hello,
>>> When stuff is written to hd, my Ubuntu 18.04.2 gets kind of
>>> unresponsive.
>>>
>>> To reproduce:
>>> echo /dev/zero > test
>>>
>>are you sure you dont mean "cat /dev/zero >test" ?
>>
>>the above would just echo the string "/dev/zero"
>>into the file "test" ;)
>
>It's even more worse that writing 9 chars (instead of tons of zeros)
>requires "CTRL+C" before any other program could start. Using the
>slowest HDD ever, let alone a SSD, it should be impossible to push
>"CTRL+C" before writing 9 chars finished. If the OP is able to run the
>echo line and to stop it using "CTRL+C" before it finished, something is
>really fishy.

I'm pretty sure that was just a typo although for a total freeze - vs "king od unresponsive"-
I have seen something similar. 
I have seen the screen freeze until I hit the control key alone
on my old Ubuntu on a Dell Latitutde. It does however appear to
be the screen freezing except IIRC for the cursor responding to the mouse.
Hitting ctrl allows the backlogged clicks to execute. So, there may be something
to a quirky command - I keep suspecting the browse in my case but
just a hunch.

Running 'Beaver off of a USB stick has worked well for me but the whole thing
can hang waiting for VM  ( also on SSD). When the browser ( Chromium in optimize_for_size )
starts opening ad subframes all my memory gets depleted until i can kill them and the whole
thing hangs. It can take minutes for the task manger to respond....

Although I'm curious if this is just slow where the bottlebeck is.



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