Re: Freezing

Brian O'Keefe <[email protected]>
Newsgroups gmane.org.user-groups.linux.nmglug
Message-ID <[email protected]>
I ran gparted and the Ubuntu disk utility as well as fdisk, sfdisk, 
cfdisk and there is no swap partition that I can find. There are tens if 
not more files listed w/ fdisk and the following is running lsblk There 
are obviously significant changes in 20.04 that are pretty much 
incomprehensible to me!

$ lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0    7:0    0 161.4M  1 loop /snap/gnome-3-28-1804/128
loop1    7:1    0 105.2M  1 loop /snap/audacity/648
loop2    7:2    0 154.3M  1 loop /snap/chromium/1143
loop3    7:3    0 156.2M  1 loop /snap/chromium/1165
loop4    7:4    0    97M  1 loop /snap/core/9289
loop5    7:5    0  93.9M  1 loop /snap/core/9066
loop6    7:6    0    55M  1 loop /snap/core18/1705
loop7    7:7    0 289.8M  1 loop /snap/kde-frameworks-5-qt-5-14-core18/3
loop8    7:8    0    55M  1 loop /snap/core18/1754
loop9    7:9    0 140.7M  1 loop /snap/gnome-3-26-1604/100
loop11   7:11   0  49.8M  1 loop /snap/snap-store/454
loop12   7:12   0 255.6M  1 loop /snap/gnome-3-34-1804/33
loop13   7:13   0   107M  1 loop /snap/gnucash-jz/43
loop14   7:14   0 255.6M  1 loop /snap/gnome-3-34-1804/36
loop15   7:15   0  54.8M  1 loop /snap/gtk-common-themes/1502
loop16   7:16   0 181.1M  1 loop /snap/spotify/36
loop17   7:17   0 141.8M  1 loop /snap/inkscape/7601
loop18   7:18   0  62.1M  1 loop /snap/gtk-common-themes/1506
loop19   7:19   0 140.7M  1 loop /snap/gnome-3-26-1604/98
loop20   7:20   0 260.7M  1 loop /snap/kde-frameworks-5-core18/32
loop21   7:21   0 160.2M  1 loop /snap/gnome-3-28-1804/116
loop22   7:22   0  87.8M  1 loop /snap/kdenlive/23
loop23   7:23   0   132K  1 loop /snap/gtk2-common-themes/9
loop24   7:24   0 141.8M  1 loop /snap/inkscape/7627
loop25   7:25   0   132K  1 loop /snap/gtk2-common-themes/5
loop26   7:26   0   291M  1 loop /snap/vlc/1620
loop27   7:27   0 163.7M  1 loop /snap/spotify/41
loop28   7:28   0   2.2M  1 loop /snap/gnome-system-monitor/148
loop29   7:29   0 290.6M  1 loop /snap/kde-frameworks-5-qt-5-14-core18/4
loop30   7:30   0   2.2M  1 loop /snap/gnome-system-monitor/145
loop31   7:31   0 202.9M  1 loop /snap/vlc/1397
loop32   7:32   0  87.8M  1 loop /snap/kdenlive/24
loop33   7:33   0 113.4M  1 loop /snap/audacity/666
sda      8:0    0 238.5G  0 disk
├─sda1   8:1    0   512M  0 part /boot/efi
└─sda2   8:2    0   238G  0 part /

However I get this when I run the following so Swap is not a partition, 
right? What is it now? A file as you noted?

$ grep SwapTotal /proc/meminfo
SwapTotal:       2097148 kB

Thanks so much Ted and I hope that you are doing as well as you can be.

Brian



On 6/6/20 4:19 PM, Ted Pomeroy wrote:
> Brian, Very interesting. Is your swap a file or a partition? I just 
> read an article https://bogdancornianu.com/change-swap-size-in-ubuntu/ 
> which sounds like what you describe for making swap bigger. It notes 
> that Ubuntu changed the protocol of swap from a partition to a file. I 
> am using Xubuntu 18.04 and the install here is a swap partition. As 
> shown here from my lsblk:
> sda      8:0    0 298.1G  0 disk
> ├─sda1   8:1    0   199M  0 part
> ├─sda2   8:2    0 165.4G  0 part
> ├─sda3   8:3    0     1K  0 part
> ├─sda4   8:4    0 103.3M  0 part
> ├─sda5   8:5    0   125G  0 part /
> └─sda6   8:6    0   7.5G  0 part [SWAP]
> sr0     11:0    1  1024M  0 rom
> So, be careful and check first. I might suggest you ascertain the 
> nature of your system before trying to use the directions you quoted.
> Thank you, Ted P.
>
> On Sat, Jun 6, 2020 at 3:35 PM Ted Pomeroy <[email protected] 
> <mailto:[email protected]>> wrote:
>
>     Brian, A quick look at it seems that it is correct. Swap is a
>     partition, it has to be unmounted to be re-sized, hence the
>     'swapoff' command. The 'dd' to resize it is an interesting
>     approach, rather than using parted or gparted. If you have used
>     all of the physical drive to install, it might feel clearer to use
>     gparted to enlarge /swap and see which other partition is giving
>     up some room. Check to see if the sample directions were installed
>     to hardware like yours or was it a virtual install? I will have to
>     take a look at the discussion on the Internet. Thank you, Ted P.
>
>     On Sat, Jun 6, 2020 at 2:21 PM Brian O'Keefe <[email protected]
>     <mailto:[email protected]>> wrote:
>
>         Hi All,
>
>         My Asus laptop has been freezing up for no reason that I could
>         think of. I found out my swap partition is 2GB and this person
>         solved it by increasing the swap partition to 16GB. I'm
>         reluctant to start messing with partitions, though I have at
>         times, w/o one of you brainiacs look at the procedure. If
>         anyone can look this over I'd appreciate it but no obligations.
>
>         Stay safe!
>
>         Brian
>
>         0
>
>         yes Ubuntu 20.04 hangs freeze although I have 8 GB of Ram and i7
>
>         I could temporary fix this issue in my side, by expanding swap
>         partition from 2 GB to 16 GB
>
>         I am not sure but I think there is problem in Ubuntu 20.04
>         memory management, here in my side it keep consuming memory,
>         then when both memory and swap are full, the computer start to
>         freeze and hang
>
>         the solution steps are:
>
>         1- check the amount of swap you have
>
>         |grep SwapTotal /proc/meminfo |
>
>         2-turn off the swap process
>
>         |sudo swapoff -a |
>
>         3-resize the swap(in my case i expand it to 16 gb)
>
>         |sudo dd if=/dev/zero of=/swapfile bs=1G count=16 |
>
>         4- attach the swap to partition
>
>         |sudo mkswap /swapfile |
>
>         5- activate swap(enable it)
>
>         |sudo swapon /swapfile |
>
>         6- see the new swap size
>
>         |grep SwapTotal /proc/meminfo |
>
>         done
>
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