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Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

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Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#61

Post by dotancohen »

paulddraper wrote: post #29
userbinator wrote: post #24

Earlier quoted context omitted.

IMHO if you can't not use swap without running out of memory in normal workloads, you either need more RAM or to work on reducing your memory consumption; swapping is for temporary overloads or gracefully recovering from one, not a substitute for RAM. It's not just a bunch of people setting cm.swappieness to 0 is it? That behaviour changed and now prevents going into swap /ever/ where it used to mean go into swap as…

Swap makes a lot of sense for a consumer device, where I'm opening a big spreadsheet, then putting that in background to edit this video. It makes less sense for server workloads, where you usually don't have huge chunks of inactive memory. I always run with no swap in AWS, especially with the newer EBS-only families.

EBS is a problem because in reality you would be swapping to a network volume. But on a standard VPS server, a bit of swap can really save you some problems. Swap was invented at a time when *NIX was strictly used in a multi-user environment, not far removed from today's webservers but very different from today's consumer devices. It still serves a purpose in that role.

Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#62

Post by Cieplak »

viraptor wrote: post #51
Cieplak wrote: post #23

Earlier quoted context omitted.

I wouldn't say that it's bad. I just find it to be quite complex, e.g., why does it need its own web server? I was also troubled by the number of Debian maintainers who left the Debian project over the intense controversy, as well as Linus's comments.

Systemd doesn't embed a webserver. It provides a service separate from both the logger and the main systemd process, which allows remote logs access. There are many issues I have with pulling various projects into one umbrella organisation, but saying systemd integrates webserver is just incorrect.

https://www.freedesktop.org/software/systemd/man/systemd-jou...

Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#63

Post by sameaa12321-3 »

magic_quotes wrote: post #49
dump12332 wrote: post #34

Earlier quoted context omitted.

Small review of FreeBSD (I used it for a very short period of time, so I could be off the wall, though). PREFACE I've been using linux since the mid-90s. I know how to use the console, I compiled kernels, played with the old xfree86 config files and all that back in the day. THE GOOD OF FreeBSD: * Stable. It feels like a Unix out of the 80s. If you know what you're doing, it'll get the job done. * man pages - Haven't…

> doesn't have enough maintainers to keep a stable ports tree, so every update can break your setup You mean frozen package versions + backported security fixes as in stable Debian branch? I think Debian is pretty unique in trying to support the whole world. Just to clarify, FreeBSD as a project only supports the base system. Ports tree doesn't have any notion of releases and is intended to be always kept up to date,…

>You mean frozen package versions + backported security fixes as in stable Debian branch? I think Debian is pretty unique in trying to support the whole world.

>Just to clarify, FreeBSD as a project only supports the base system. Ports tree doesn't have any notion of releases and is intended to be always kept up to date, akin to Gentoo portage or Arch linux packages.

Yes. I understand the amount of work Debian admins put in (which is why I stick with Debian, even though nixos/guix seems much more interesting), but it's a strong advantage.

Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#64

Post by rce »

SSTitan wrote: post #35
Pxtl wrote: post #7

Earlier quoted context omitted.

Yeah, Ubuntu still keeps running out of space in /boot by filling it w old kernels in the default partition profile. A bug that I've been hitting since about 2011. In spite of their best efforts, it is not the "grandma friendly" quality software it hoped to be.

The /boot bug is unreal, I just ran into that a few months ago.

It's super frustrating. There's no reason I need twenty kernels on my machine :-p

Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#65

Post by nnq »

Pxtl wrote: post #22
peller wrote: post #9

Earlier quoted context omitted.

You can run `apt-get autoremove` and it will purge old kernels/headers for you (amongst any other no-longer-used dependencies).

Oh, I know it's easy to fix, I just single that bug out as "I have done nothing with this box but install updates and surf the web. I am Grandma. It breaks".

If you're Grandma you don't have /boot on a separate partition, you have all / on a big 120GB at least, so if you run out of space you simply know you've run out of space.

Not perfect but not a problem for 90% of people I guess...

Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#66

Post by shmerl »

amluto wrote: post #11
Pxtl wrote: post #7

Earlier quoted context omitted.

Yeah, Ubuntu still keeps running out of space in /boot by filling it w old kernels in the default partition profile. A bug that I've been hitting since about 2011. In spite of their best efforts, it is not the "grandma friendly" quality software it hoped to be.

My M.O. is: # apt-get update # aptitude full-upgrade # apt-get autoremove Because as far as I can tell, apt-get sometimes fails to actually update things, whereas aptitude can't autoremove. I'm sure there's a better way. This is my major gripe with the dpkg ecosystem. There are (AFAICT) multiple different tools to build dpgks and multiple different tools for updating your system, and none of them are adequately docum…

> apt-get autoremove

You should be doing:

    apt-get autoremove --purge
Otherwise you'll be leaving a lot of clutter around (obsolete configuration files).

Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#67

Post by jabl »

lokedhs wrote: post #10
Pxtl wrote: post #7

Earlier quoted context omitted.

Yeah, Ubuntu still keeps running out of space in /boot by filling it w old kernels in the default partition profile. A bug that I've been hitting since about 2011. In spite of their best efforts, it is not the "grandma friendly" quality software it hoped to be.

If we're sharing Ubuntu bugs, how about the one where NFS with Kerberos had been completely broken since several years back. You simply can't mount such a share, and you'll always get an authentication error. I reported it as soon as I upgraded (to 14-something I think) and the bug was marked as severe. Every time a new release of Ubuntu comes out I check if it had been fixed, and of course it hasn't.

FWIW, we've been able to use NFS with sec=krb5 on both 14.04 and 16.04.

Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#68

Post by slitaz »

Pxtl wrote: post #7
mrmondo wrote: post #2

It's not just a bunch of people setting cm.swappieness to 0 is it? That behaviour changed and now prevents going into swap /ever/ where it used to mean go into swap as a last resort. Changing it to 1 fixes the issue and will act like the old behaviour or only swapping as a last result. Regardless, it's things like this why we never recommend people use Ubuntu - years of poorly packaged and tested software. If you wan…

Yeah, Ubuntu still keeps running out of space in /boot by filling it w old kernels in the default partition profile. A bug that I've been hitting since about 2011. In spite of their best efforts, it is not the "grandma friendly" quality software it hoped to be.

These are autoremoved nowadays.

Re: Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4.0-59

#70

Post by viraptor »

Cieplak wrote: post #62
viraptor wrote: post #51

Earlier quoted context omitted.

Systemd doesn't embed a webserver. It provides a service separate from both the logger and the main systemd process, which allows remote logs access. There are many issues I have with pulling various projects into one umbrella organisation, but saying systemd integrates webserver is just incorrect.

https://www.freedesktop.org/software/systemd/man/systemd-jou...

Precisely what I described. It's a web server that serves journald events/entries. It's separate from journald, and it's separate from systemd as a service. It's completely optional. It's no more embedded in systemd than nginx.

It does exist in the same umbrella project as systemd, (and I think that is an issue) but embedded is the wrong term.

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