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Old 12-06-2017, 06:30 AM   #181
Darth Vader
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Quote:
Originally Posted by chrisVV View Post
The linux kernel will need to use PAE to address more than about 3GB of memory in practice (try running 'free' with PAE turned off and you will see some of your 4GB disappear). That doesn't mean that a binary with 32-bit pointers might not run faster than a binary of the same program with 64-bit pointers, but using 4GB as your cut-off is somewhat arbitrary.
Well, usually I work with the range: 2GB -> 4GB -> 8GB, I have only two computers with 32, almost all has 8. Of course, I talk about my own computers.

Last edited by Darth Vader; 12-06-2017 at 09:26 AM.
 
Old 12-08-2017, 09:51 PM   #182
aaazen
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Patrick's testing came to the attention of the kernel developers today.

Code:
kernels 4.13.*, 4.14.* 4.15-rc2 crash on occasion, especially
on x86-32 systems. To trigger the problem, run as root:

while true
do
        /sbin/udevadm trigger --type=subsystems --action=change
        /sbin/udevadm trigger --type=devices --action=change
        /sbin/udevadm settle --timeout=120
done

(Thanks to Patrick Volkerding for the reproducer).
...
https://marc.info/?l=linux-kernel&m=151277731921517&w=2

I can now crash my 64-bit AMD machine by installing a partition with slackware-current (32-bit) Linux 4-14.4 and running the Bash script loop above.

It crashes within a few minutes.
 
8 members found this post helpful.
Old 12-09-2017, 06:02 AM   #183
Darth Vader
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Registered: May 2008
Location: Romania
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Posts: 1,647

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Quote:
Originally Posted by aaazen View Post
Patrick's testing came to the attention of the kernel developers today.

Code:
kernels 4.13.*, 4.14.* 4.15-rc2 crash on occasion, especially
on x86-32 systems. To trigger the problem, run as root:

while true
do
        /sbin/udevadm trigger --type=subsystems --action=change
        /sbin/udevadm trigger --type=devices --action=change
        /sbin/udevadm settle --timeout=120
done

(Thanks to Patrick Volkerding for the reproducer).
...
https://marc.info/?l=linux-kernel&m=151277731921517&w=2

I can now crash my 64-bit AMD machine by installing a partition with slackware-current (32-bit) Linux 4-14.4 and running the Bash script loop above.

It crashes within a few minutes.
Congrats to our BDFL and the future looks brighter for us, as users.

Still, please do not forget also about those two poor souls who insisted to lament "But it crash!" while our BDFL responded to them a "Nope! Just happened a bit, and that was in the first release!"

In other hand, NEED_BOUNCE_POOL ? Could be this a thing to follow? Our BDFL already suspect that the issue is also config dependent...

Last edited by Darth Vader; 12-09-2017 at 08:44 AM.
 
Old 12-09-2017, 04:56 PM   #184
dracolich
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Registered: Jul 2005
Distribution: Slackware
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Just to share my experience with 4.14.x. I have used .0, .1, .2, .3 and .4; all built using my 4.13.x config with no changes. .0 - .3 would crash during the first boot after installing the kernel, but never again until installing and booting a new kernel. .4 has not crashed for me in four boots, even during the first boot. The biggest difference I can think of between .3 and .4 is that I fixed all of my custom udev rules that it complained about.

I run Slackware 14.2 32-bit with 16GB DDR3 RAM and a Phenom II x2 555 unlocked to x4. For booting kernels I use GRUB and I don't use an initrd.

Just booted again, no problem, and I checked my udev version is 182-i486-7

Last edited by dracolich; 12-09-2017 at 06:55 PM. Reason: additional details
 
Old 12-10-2017, 10:36 AM   #185
nobodino
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Registered: Jul 2010
Location: in France
Distribution: slackware, slackware from scratch, LFS, linux Mint, Niresh (MacOS)...
Posts: 189

Original Poster
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kernel-4.14.5 = "same punishment", segfault as usual.
No progess on that side.
 
2 members found this post helpful.
Old 12-10-2017, 12:11 PM   #186
Darth Vader
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Registered: May 2008
Location: Romania
Distribution: DARKSTAR Linux 2008.1
Posts: 1,647

Rep: Reputation: 590Reputation: 590Reputation: 590Reputation: 590Reputation: 590Reputation: 590
Same here, the 4.14.5, built following religious the original ricette from /testing, given on my mini-PC: "veni, vidi, ... crash" (it had gone crash on the third boot)

Last edited by Darth Vader; 12-10-2017 at 09:03 PM.
 
  


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