Bug#970639: grub-pc: Zswap disabled by default
Calum McConnell
calumlikesapplepie at gmail.com
Sun Sep 20 17:37:02 BST 2020
Package: grub-pc
Version: 2.04-8
Severity: wishlist
X-Debbugs-Cc: calumlikesapplepie at gmail.com
Simply put, I think a lot of people would benefit from zswap being enabled by default. Except on
very low-preformance machines, it is always an improvment. Even on those very limited machines,
zswap would only be a significant limitation if memory is being pushed close, but not past, it's
limits, and Disk IO is very fast-- neither of which are likely true for computers with sufficently
weak CPU's.
>From what I can tell, enabling it should be a simple matter of changing the default grub config file.
I know zswap is a kernel parameter, but every guide I have seen says to enable it in grub config.
As such, I appologize if you think this report is better directed elsewhere, or if it has been
implemented already and my config files are out of date.
Thanks for your time!
Calum
-- Package-specific info:
*********************** BEGIN /proc/mounts
/dev/sda1 / ext4 rw,relatime,errors=remount-ro 0 0
*********************** END /proc/mounts
*********************** BEGIN /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2c7929e7-825d-453d-a064-53da2115a7a2
else
search --no-floppy --fs-uuid --set=root 2c7929e7-825d-453d-a064-53da2115a7a2
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
set timeout=30
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=5
fi
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2c7929e7-825d-453d-a064-53da2115a7a2
else
search --no-floppy --fs-uuid --set=root 2c7929e7-825d-453d-a064-53da2115a7a2
fi
insmod png
if background_image /usr/share/desktop-base/futureprototype-theme/grub/grub-4x3.png; then
set color_normal=white/black
set color_highlight=black/white
else
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
fi
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
set gfxpayload="${1}"
}
set linux_gfx_mode=
export linux_gfx_mode
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-2c7929e7-825d-453d-a064-53da2115a7a2' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2c7929e7-825d-453d-a064-53da2115a7a2
else
search --no-floppy --fs-uuid --set=root 2c7929e7-825d-453d-a064-53da2115a7a2
fi
echo 'Loading Linux 5.8.0-1-amd64 ...'
linux /boot/vmlinuz-5.8.0-1-amd64 root=UUID=2c7929e7-825d-453d-a064-53da2115a7a2 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-5.8.0-1-amd64
}
submenu 'Advanced options for Debian GNU/Linux' $menuentry_id_option 'gnulinux-advanced-2c7929e7-825d-453d-a064-53da2115a7a2' {
menuentry 'Debian GNU/Linux, with Linux 5.8.0-1-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.8.0-1-amd64-advanced-2c7929e7-825d-453d-a064-53da2115a7a2' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2c7929e7-825d-453d-a064-53da2115a7a2
else
search --no-floppy --fs-uuid --set=root 2c7929e7-825d-453d-a064-53da2115a7a2
fi
echo 'Loading Linux 5.8.0-1-amd64 ...'
linux /boot/vmlinuz-5.8.0-1-amd64 root=UUID=2c7929e7-825d-453d-a064-53da2115a7a2 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-5.8.0-1-amd64
}
menuentry 'Debian GNU/Linux, with Linux 5.8.0-1-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.8.0-1-amd64-recovery-2c7929e7-825d-453d-a064-53da2115a7a2' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2c7929e7-825d-453d-a064-53da2115a7a2
else
search --no-floppy --fs-uuid --set=root 2c7929e7-825d-453d-a064-53da2115a7a2
fi
echo 'Loading Linux 5.8.0-1-amd64 ...'
linux /boot/vmlinuz-5.8.0-1-amd64 root=UUID=2c7929e7-825d-453d-a064-53da2115a7a2 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-5.8.0-1-amd64
}
menuentry 'Debian GNU/Linux, with Linux 5.7.0-3-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.7.0-3-amd64-advanced-2c7929e7-825d-453d-a064-53da2115a7a2' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2c7929e7-825d-453d-a064-53da2115a7a2
else
search --no-floppy --fs-uuid --set=root 2c7929e7-825d-453d-a064-53da2115a7a2
fi
echo 'Loading Linux 5.7.0-3-amd64 ...'
linux /boot/vmlinuz-5.7.0-3-amd64 root=UUID=2c7929e7-825d-453d-a064-53da2115a7a2 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-5.7.0-3-amd64
}
menuentry 'Debian GNU/Linux, with Linux 5.7.0-3-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.7.0-3-amd64-recovery-2c7929e7-825d-453d-a064-53da2115a7a2' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2c7929e7-825d-453d-a064-53da2115a7a2
else
search --no-floppy --fs-uuid --set=root 2c7929e7-825d-453d-a064-53da2115a7a2
fi
echo 'Loading Linux 5.7.0-3-amd64 ...'
linux /boot/vmlinuz-5.7.0-3-amd64 root=UUID=2c7929e7-825d-453d-a064-53da2115a7a2 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-5.7.0-3-amd64
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/30_uefi-firmware ###
### END /etc/grub.d/30_uefi-firmware ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
*********************** END /boot/grub/grub.cfg
*********************** BEGIN /proc/mdstat
cat: /proc/mdstat: No such file or directory
*********************** END /proc/mdstat
*********************** BEGIN /dev/disk/by-id
total 0
lrwxrwxrwx 1 root root 9 Sep 17 20:43 ata-HL-DT-ST_DVD+_-RW_GU90N_KXIE2DL0324 -> ../../sr0
lrwxrwxrwx 1 root root 9 Sep 17 10:31 ata-Hitachi_HTS545032B9SA02_100505PBTC001DKLZ1AY -> ../../sda
lrwxrwxrwx 1 root root 10 Sep 17 10:31 ata-Hitachi_HTS545032B9SA02_100505PBTC001DKLZ1AY-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Sep 17 10:31 ata-Hitachi_HTS545032B9SA02_100505PBTC001DKLZ1AY-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Sep 17 10:31 ata-Hitachi_HTS545032B9SA02_100505PBTC001DKLZ1AY-part5 -> ../../sda5
lrwxrwxrwx 1 root root 9 Sep 17 10:31 wwn-0x5000cca5edf2e5f8 -> ../../sda
lrwxrwxrwx 1 root root 10 Sep 17 10:31 wwn-0x5000cca5edf2e5f8-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Sep 17 10:31 wwn-0x5000cca5edf2e5f8-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Sep 17 10:31 wwn-0x5000cca5edf2e5f8-part5 -> ../../sda5
lrwxrwxrwx 1 root root 9 Sep 17 20:43 wwn-0x5001480000000000 -> ../../sr0
*********************** END /dev/disk/by-id
*********************** BEGIN /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root 10 Sep 17 10:31 2c7929e7-825d-453d-a064-53da2115a7a2 -> ../../sda1
lrwxrwxrwx 1 root root 10 Sep 17 10:31 64927d8b-8841-4fd8-bf92-87c8067b2983 -> ../../sda5
*********************** END /dev/disk/by-uuid
-- System Information:
Debian Release: bullseye/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.8.0-1-amd64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages grub-pc depends on:
ii debconf [debconf-2.0] 1.5.74
ii grub-common 2.04-8
ii grub-pc-bin 2.04-8
ii grub2-common 2.04-8
ii ucf 3.0043
grub-pc recommends no packages.
grub-pc suggests no packages.
-- debconf information:
grub-pc/timeout: 5
grub-pc/install_devices_failed_upgrade: true
grub-pc/mixed_legacy_and_grub2: true
grub-pc/postrm_purge_boot_grub: false
grub-pc/install_devices_empty: false
* grub2/linux_cmdline:
grub-pc/install_devices_failed: false
grub2/force_efi_extra_removable: false
grub2/update_nvram: true
* grub-pc/install_devices: /dev/disk/by-id/ata-Hitachi_HTS545032B9SA02_100505PBTC001DKLZ1AY
grub2/kfreebsd_cmdline_default: quiet
grub-pc/disk_description:
grub2/kfreebsd_cmdline:
grub-pc/install_devices_disks_changed:
grub-pc/partition_description:
grub-pc/chainload_from_menu.lst: true
grub-pc/hidden_timeout: false
grub-pc/kopt_extracted: false
* grub2/linux_cmdline_default: quiet
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