Bsrgvty

EDIT: I messed up the install below due to n00b and trying bleachbit and updating, probably not rebooting in between had that effect. Could fix most of it but didn't feel right. SO I moved to a clean install of 19.10. System has 6GB of ram, install chose, again, to allocate too little swapspace (still only 2GB, compared to 1GB in the previous install) HOWEVER in 19.10 physical RAM doesn't fill up nearly as fast and the swapspace that is being used is around 500MB after 10 hours of use while the 19.04 version would fill up both after an hour orso of use. Had to reboot after 3 hours. So, at least to me, it would seem that memory management in 19.10 has improved, or that there is something wrong in the 19.04 version. I still allocated 6GB of memory, just to be sure. Running conky I get to monitor stuff and I think this is the way Linux is supposed to function. So should I not be the only one out there with this problem on Disco Dingo, try moving to a newer version.

System does what I stated in the problem desc. I have been trying to find out what goes wrong where and via "glances" and "iotop" it has led me to this problem description. The swap and ram fills up, is able to stay at around 99% for a period of time (most often it takes a couple of hours before the system becomes unresponsive) and then iowait just goes through the roof. The moment that happens, hdd led starts burning full and disk read/writes of most, if not all, processes are shown to be anywhere from 0 to tens of MB/s in iotop. Which doesn't get the time to update anymore, nor does glances. The only thing that then works is a hard reset. I need to do this multiple times a day and is making my linux experience horrible.

The best I could find over the last couple of weeks was this problem description from someone who has been experiencing the same problem as I am experiencing on my laptop.
https://unix.stackexchange.com/questions/373312/oom-killer-doesnt-work-properly-leads-to-a-frozen-os

This is a serious problem which more people, even very experienced ones, far more than me, seem to encounter quite a bit. Yet, no one seems to know where to turn to. To verify the above, please consult the link above and its links and comments.

Anyone? Any tips or advice? Somewhere to turn to perhaps?

Here are my systems' specs and output which I'll list for completeness. However, I am unsure if this will be of any benefit. If any other data is necessary, please provide me with the required commands and I will execute them gladly.

echo $MACHTYPE
x86_64-pc-linux-gnu

and

cat /etc/*-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=19.04
DISTRIB_CODENAME=disco
DISTRIB_DESCRIPTION="Ubuntu 19.04"
NAME="Ubuntu"
VERSION="19.04 (Disco Dingo)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 19.04"
VERSION_ID="19.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=disco
UBUNTU_CODENAME=disco

and

sudo vmstat
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
 r b swpd free buff cache si so bi bo in cs us sy id wa st
 4 0 443648 1339308 19684 897180 1 9 48 41 674 536 22 7 66 5 0

and

lsblk -a
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 35,3M 1 loop /snap/gtk-common-themes/1198
loop1 7:1 0 54,4M 1 loop /snap/core18/1144
loop2 7:2 0 2,3M 1 loop /snap/gotop/3
loop3 7:3 0 4,2M 1 loop /snap/gnome-calculator/501
loop4 7:4 0 117,2M 1 loop /snap/screencloud/2
loop5 7:5 0 4M 1 loop /snap/gnome-calculator/406
loop6 7:6 0 317,5M 1 loop /snap/pycharm-educational/14
loop7 7:7 0 14,8M 1 loop /snap/gnome-characters/254
loop8 7:8 0 140,7M 1 loop /snap/gnome-3-26-1604/92
loop9 7:9 0 53,7M 1 loop /snap/core18/941
loop10 7:10 0 12,6M 1 loop /snap/dmd/74
loop11 7:11 0 956K 1 loop /snap/gnome-logs/73
loop12 7:12 0 317,8M 1 loop /snap/pycharm-educational/16
loop13 7:13 0 89M 1 loop /snap/core/7713
loop14 7:14 0 6,5M 1 loop /snap/gnome-clocks/198
loop15 7:15 0 65,9M 1 loop /snap/discord/93
loop16 7:16 0 151M 1 loop /snap/gnome-3-28-1804/31
loop17 7:17 0 52,2M 1 loop /snap/tvheadend/86
loop18 7:18 0 149,9M 1 loop /snap/gnome-3-28-1804/71
loop19 7:19 0 7,9M 1 loop /snap/amass/706
loop20 7:20 0 6,9M 1 loop /snap/dub/37
loop21 7:21 0 42,8M 1 loop /snap/gtk-common-themes/1313
loop22 7:22 0 320,2M 1 loop /snap/pycharm-community/150
loop23 7:23 0 26,7M 1 loop /snap/sickgear/486
loop24 7:24 0 1008K 1 loop /snap/gnome-logs/61
loop25 7:25 0 373,5M 1 loop /snap/anbox/158
loop26 7:26 0 89,3M 1 loop /snap/core/6673
loop27 7:27 0 14,8M 1 loop /snap/gnome-characters/317
loop28 7:28 0 202,9M 1 loop /snap/vlc/1049
loop29 7:29 0 320,9M 1 loop /snap/pycharm-community/155
loop30 7:30 0 310,8M 1 loop 
loop31 7:31 0 8M 1 loop /snap/amass/711
sda 8:0 0 55,9G 0 disk 
└─sda1 8:1 0 55,9G 0 part 
 ├─ubuntu--vg-root 253:0 0 54,9G 0 lvm /
 └─ubuntu--vg-swap_1 253:1 0 976M 0 lvm [SWAP]
sr0 11:0 1 1024M 0 rom

and

sudo lshw -short
H/W path Device Class Description
=======================================================
 system H36ST (To be filled by O.E.M.)
/0 bus H36ST
/0/0 memory 64KiB BIOS
/0/4 processor Intel(R) Core(TM) i3 CPU M 330 @ 2.13GHz
/0/4/5 memory 32KiB L1 cache
/0/4/6 memory 256KiB L2 cache
/0/4/7 memory 3MiB L3 cache
/0/25 memory 6GiB System Memory
/0/25/0 memory 4GiB SODIMM DDR3 Synchronous 1067 MHz (0,9 ns)
/0/25/1 memory 2GiB SODIMM DDR3 Synchronous 1067 MHz (0,9 ns)
/0/100 bridge Core Processor DRAM Controller
/0/100/1 bridge Core Processor PCI Express x16 Root Port
/0/100/1/0 display Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M]
/0/100/1/0.1 multimedia Redwood HDMI Audio [Radeon HD 5000 Series]
/0/100/2 display Core Processor Integrated Graphics Controller
/0/100/16 communication 5 Series/3400 Series Chipset HECI Controller
/0/100/1a bus 5 Series/3400 Series Chipset USB2 Enhanced Host Controller
/0/100/1a/1 usb1 bus EHCI Host Controller
/0/100/1a/1/1 bus Integrated Rate Matching Hub
/0/100/1a/1/1/5 communication Bluetooth Module
/0/100/1b multimedia 5 Series/3400 Series Chipset High Definition Audio
/0/100/1c bridge 5 Series/3400 Series Chipset PCI Express Root Port 1
/0/100/1c.1 bridge 5 Series/3400 Series Chipset PCI Express Root Port 2
/0/100/1c.1/0 wlp3s0 network AR9285 Wireless Network Adapter (PCI-Express)
/0/100/1c.2 bridge 5 Series/3400 Series Chipset PCI Express Root Port 3
/0/100/1c.5 bridge 5 Series/3400 Series Chipset PCI Express Root Port 6
/0/100/1c.5/0 enp6s0 network AR8131 Gigabit Ethernet
/0/100/1d bus 5 Series/3400 Series Chipset USB2 Enhanced Host Controller
/0/100/1d/1 usb2 bus EHCI Host Controller
/0/100/1d/1/1 bus Integrated Rate Matching Hub
/0/100/1d/1/1/1 input Compact Optical Mouse 500
/0/100/1e bridge 82801 Mobile PCI Bridge
/0/100/1f bridge HM55 Chipset LPC Interface Controller
/0/100/1f.2 storage 5 Series/3400 Series Chipset 4 port SATA AHCI Controller
/0/100/1f.3 bus 5 Series/3400 Series Chipset SMBus Controller
/0/100/1f.6 generic 5 Series/3400 Series Chipset Thermal Subsystem
/0/101 bridge Core Processor QuickPath Architecture Generic Non-core Registers
/0/102 bridge Core Processor QuickPath Architecture System Address Decoder
/0/103 bridge Core Processor QPI Link 0
/0/104 bridge 1st Generation Core i3/5/7 Processor QPI Physical 0
/0/105 bridge 1st Generation Core i3/5/7 Processor Reserved
/0/106 bridge 1st Generation Core i3/5/7 Processor Reserved
/0/1 scsi0 storage 
/0/1/0.0.0 /dev/sda disk 60GB OCZ-VERTEX3
/0/1/0.0.0/1 /dev/sda1 volume 55GiB Linux LVM Physical Volume partition
/0/2 scsi1 storage 
/0/2/0.0.0 /dev/cdrom disk DVD A DS8A4S
/1 power To Be Filled By O.E.M.

And

 lspci -k
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12)
 Subsystem: Pegatron Core Processor DRAM Controller
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 12)
 Kernel driver in use: pcieport
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12)
 Subsystem: Pegatron Core Processor Integrated Graphics Controller
 Kernel driver in use: i915
 Kernel modules: i915
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
 Subsystem: Pegatron 5 Series/3400 Series Chipset HECI Controller
 Kernel driver in use: mei_me
 Kernel modules: mei_me
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
 Subsystem: Pegatron 5 Series/3400 Series Chipset USB2 Enhanced Host Controller
 Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
 Subsystem: Pegatron 5 Series/3400 Series Chipset High Definition Audio
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06)
 Kernel driver in use: pcieport
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 06)
 Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 06)
 Kernel driver in use: pcieport
00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 (rev 06)
 Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
 Subsystem: Pegatron 5 Series/3400 Series Chipset USB2 Enhanced Host Controller
 Kernel driver in use: ehci-pci
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6)
00:1f.0 ISA bridge: Intel Corporation HM55 Chipset LPC Interface Controller (rev 06)
 Subsystem: Pegatron HM55 Chipset LPC Interface Controller
 Kernel driver in use: lpc_ich
 Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 06)
 Subsystem: Pegatron 5 Series/3400 Series Chipset 4 port SATA AHCI Controller
 Kernel driver in use: ahci
 Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
 Subsystem: Pegatron 5 Series/3400 Series Chipset SMBus Controller
 Kernel driver in use: i801_smbus
 Kernel modules: i2c_i801
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 06)
 Subsystem: Pegatron 5 Series/3400 Series Chipset Thermal Subsystem
 Kernel driver in use: intel ips
 Kernel modules: intel_ips
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M]
 Subsystem: Pegatron Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M]
 Kernel driver in use: radeon
 Kernel modules: radeon
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Redwood HDMI Audio [Radeon HD 5000 Series]
 Subsystem: Pegatron Redwood HDMI Audio [Radeon HD 5000 Series]
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd_hda_intel
03:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
 Subsystem: AzureWave AW-NE785 / AW-NE785H 802.11bgn Wireless Full or Half-size Mini PCIe Card
 Kernel driver in use: ath9k
 Kernel modules: ath9k
06:00.0 Ethernet controller: Qualcomm Atheros AR8131 Gigabit Ethernet (rev c0)
 Subsystem: Pegatron AR8131 Gigabit Ethernet
 Kernel driver in use: atl1c
 Kernel modules: atl1c
3f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
 Subsystem: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers
3f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
 Subsystem: Intel Corporation Core Processor QuickPath Architecture System Address Decoder
3f:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
 Subsystem: Intel Corporation Core Processor QPI Link 0
3f:02.1 Host bridge: Intel Corporation 1st Generation Core i3/5/7 Processor QPI Physical 0 (rev 02)
 Subsystem: Intel Corporation 1st Generation Core i3/5/7 Processor QPI Physical 0
3f:02.2 Host bridge: Intel Corporation 1st Generation Core i3/5/7 Processor Reserved (rev 02)
 Subsystem: Intel Corporation 1st Generation Core i3/5/7 Processor Reserved
3f:02.3 Host bridge: Intel Corporation 1st Generation Core i3/5/7 Processor Reserved (rev 02)
 Subsystem: Intel Corporation 1st Generation Core i3/5/7 Processor Reserved

And

Sudo free -h
 total used free shared buff/cache available
Mem: 5,6Gi 3,6Gi 716Mi 542Mi 1,4Gi 1,3Gi
Swap: 975Mi 0B 975Mi

And

cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/mapper/ubuntu--vg-root / ext4 errors=remount-ro 0 1
/dev/mapper/ubuntu--vg-swap_1 none swap sw 0 0

And

sudo blkid
/dev/sda1: UUID="TJyyqj-69Oz-taq7-XNnr-Wa1c-KeQr-hE27gh" TYPE="LVM2_member" PARTUUID="d0b08d86-01"
/dev/mapper/ubuntu--vg-root: UUID="fec411bd-5ef0-46fa-8e9e-6dbe26ba91de" TYPE="ext4"
/dev/mapper/ubuntu--vg-swap_1: UUID="a8605c39-db25-47d2-99d3-b9ae97c59042" TYPE="swap"
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/loop2: TYPE="squashfs"
/dev/loop3: TYPE="squashfs"
/dev/loop4: TYPE="squashfs"
/dev/loop5: TYPE="squashfs"
/dev/loop6: TYPE="squashfs"
/dev/loop7: TYPE="squashfs"
/dev/loop8: TYPE="squashfs"
/dev/loop9: TYPE="squashfs"
/dev/loop10: TYPE="squashfs"
/dev/loop11: TYPE="squashfs"
/dev/loop12: TYPE="squashfs"
/dev/loop13: TYPE="squashfs"
/dev/loop14: TYPE="squashfs"
/dev/loop15: TYPE="squashfs"
/dev/loop16: TYPE="squashfs"
/dev/loop17: TYPE="squashfs"
/dev/loop18: TYPE="squashfs"
/dev/loop19: TYPE="squashfs"
/dev/loop20: TYPE="squashfs"
/dev/loop21: TYPE="squashfs"
/dev/loop22: TYPE="squashfs"
/dev/loop23: TYPE="squashfs"
/dev/loop24: TYPE="squashfs"
/dev/loop25: TYPE="squashfs"
/dev/loop26: TYPE="squashfs"
/dev/loop27: TYPE="squashfs"
/dev/loop28: TYPE="squashfs"
/dev/loop29: TYPE="squashfs"
/dev/loop30: TYPE="squashfs"
/dev/loop31: TYPE="squashfs"

From the comments...

With only 6G RAM, 1G swap is way too small. I'd recommend at least 6G swap. That's why you're having the freezing problem, and your disk is thrashing. Either increase the swap partition, or change over to using a /swapfile.

To create a /swapfile, you can use this as a guideline...

sudo swapoff -a
sudo rm /swapfile
sudo dd if=/dev/zero of=/swapfile bs=1M count=6144
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

Also, with only 6G RAM, vm.swappiness should be 60 or higher. With a larger swap partition, or /swapfile, I'd recommend setting this to 80.

To test various settings of vm.swappiness, use sudo sysctl vm.swappiness=80. vm.swappiness values greater than the default of 60 make more use of swap. Values less than 60 make more use of RAM.

To make it permanent, edit /etc/sysctl.conf and add vm.swappiness=80 at the end, then reboot.

In either case, you'll need to edit /etc/fstab...

comment out this...

/dev/mapper/ubuntu--vg-swap_1 none swap sw 0 0

and add this for a /swapfile...

/swapfile none swap sw 0 0