Zram line 39 errors: (SOLVED)

rokytnji · posted: 2015-11-04 04:21

harry@biker:~
$ zram
Usage: /usr/local/bin/zram {start|stop|restart}
harry@biker:~
$ /usr/local/bin/zram start
/usr/local/bin/zram: line 39: modprobe: command not found
Your Kernel needs to be compiled with ZRAM support: 

Device Drivers --> Staging Drivers --> Compressed RAM block device support (M) 
Device Drivers --> Staging Drivers --> Dynamic compression of swap pages and clean pagecache pages (*) 

The Liquorix Kernel (http://liquorix.net) has ZRAM support built in.
harry@biker:~
$ linuxinfo
Linux biker 4.0.5-antix.1-486-smp #1 SMP Mon Jun 8 00:21:57 EEST 2015
Two Intel Unknown 800MHz processors, 6383.88 total bogomips, 2010M RAM
System library 2.19.0
harry@biker:~
$ dpkg --list | grep linux-image
ii  linux-image-4.0.5-antix.1-486-smp    4.0.5-antix.1-486-smp-1              i386         Linux kernel, version 4.0.5-antix.1-486-smp
ii  linux-image-4.2.1-antix.2-486-smp    4.2.1-antix.2-486-smp-5              i386         Linux kernel, version 4.2.1-antix.2-486-smp
harry@biker:~

I get the same errors on the 4.2 antix kernel when running it also. I was just double checking if it was only the 4.2 but I guess the stock 4.0.5 left out zram support also.
Or am I doing something wrong __{{emoticon}}__

I run no /swap partition on this Kingspec SSD

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$ sudo parted -l
Model: ATA KingSpec KSD-ZF1 (scsi)
Disk /dev/sda: 63.3GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  8914MB  8913MB  primary  ext4
 2      8914MB  63.3GB  54.4GB  primary  ext4

The netbook is

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$ inxi -Fxz
System:    Host: biker Kernel: 4.0.5-antix.1-486-smp i686 (32 bit gcc: 4.9.2)
           Desktop: IceWM 1.3.8
           Distro: antiX-15-V_386-full Killah P 30 June 2015
Machine:   System: Intel product: Intel powered classmate PC v: 3rd Gen
           Mobo: QCI model: Intel powered classmate PC v: 3rd Gen
           Bios: Phoenix v: HP94510A.86A.0035.2009.0427.2020 date: 04/27/2009
CPU:       Single core Intel Atom N270 (-HT-) cache: 512 KB
           flags: (nx pae sse sse2 sse3 ssse3) bmips: 3191
           clock speeds: max: 1600 MHz 1: 1333 MHz 2: 1333 MHz
Graphics:  Card: Intel Mobile 945GSE Express Integrated Graphics Controller
           bus-ID: 00:02.0
           Display Server: X.Org 1.16.4 drivers: intel (unloaded: fbdev,vesa)
           Resolution: 1024x600@60.00hz
           GLX Renderer: Mesa DRI Intel 945GME x86/MMX/SSE2
           GLX Version: 2.1 Mesa 10.3.2 Direct Rendering: Yes
Audio:     Card Intel NM10/ICH7 Family High Definition Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture v: k4.0.5-antix.1-486-smp
Network:   Card-1: Realtek RTL8101E/RTL8102E PCI Express Fast Ethernet controller
           driver: r8169 v: 2.3LK-NAPI port: 2000 bus-ID: 02:00.0
           IF: eth0 state: down mac: <filter>
           Card-2: Ralink RT2870/RT3070 Wireless Adapter
           driver: rt2800usb v: 2.3.0 usb-ID: 002-004
           IF: wlan0 state: N/A mac: N/A
Drives:    HDD Total Size: 63.3GB (58.5% used)
           ID-1: /dev/sda model: KingSpec_KSD size: 63.3GB
Partition: ID-1: / size: 8.1G used: 3.0G (40%) fs: ext4 dev: /dev/sda1
           ID-2: /home size: 50G used: 32G (67%) fs: ext4 dev: /dev/sda2
Sensors:   System Temperatures: cpu: 51.0C mobo: N/A
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 117 Uptime: 12 min Memory: 350.0/2010.4MB
           Init: SysVinit runlevel: 5 Gcc sys: 4.9.2
           Client: Shell (bash 4.3.301) inxi: 2.2.28

Hope I provided enough info. I could go Liqourix but figured I better let anti know. I am not going to touch anything till I get some feed back on this. This SSD does not have trim support supplied by the manfacturer either and is a zif 40 pin ribbon cable pata/ide 1.8 hard drive.

========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"http://www.amazon.com/KingSpec-1-8-inch-40-pin-Solid-Controller/product-reviews/B007PR8NQO/ref=cm_cr_dp_see_all_btm/192-8119323-4442419?ie=UTF8&showViewpoints=1&sortBy=bySubmissionDateDescending"
linktext was:"http://www.amazon.com/KingSpec-1-8-inch ... Descending"
====================================

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$ apt-cache policy antix-goodies
antix-goodies:
  Installed: 0.5.0
  Candidate: 0.5.0
  Version table:
 *** 0.5.0 0
        500 http://antix.daveserver.info/jessie/ jessie/main i386 Packages
        100 /var/lib/dpkg/status

rokytnji · posted: 2015-11-04 04:40

Tested in MX-14

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$ inxi -Fxz
System:    Host: scuzbucket Kernel: 3.14-0.bpo.2-686-pae i686 (32 bit gcc: 4.6.3)
           Desktop: Xfce 4.12.2 (Gtk 2.24.10)
           Distro: MX-14.4-pae Symbiosis 22 March 2015
Machine:   System: LENOVO product: 6075BHU v: ThinkCentre M57
           Mobo: LENOVO model: LENOVO
           Bios: LENOVO v: 2RKT41AUS date: 03/20/2008
CPU:       Dual core Intel Pentium Dual E2160 (-MCP-) cache: 1024 KB
           flags: (lm nx pae sse sse2 sse3 ssse3) bmips: 7182
           clock speeds: max: 1800 MHz 1: 1200 MHz 2: 1200 MHz
Graphics:  Card: Intel 82Q35 Express Integrated Graphics Controller
           bus-ID: 00:02.0
           Display Server: X.Org 1.12.4 drivers: intel (unloaded: fbdev,vesa)
           Resolution: 1920x1080@60.0hz
           GLX Renderer: Mesa DRI Intel Q35 x86/MMX/SSE2
           GLX Version: 1.4 Mesa 8.0.5 Direct Rendering: Yes
Audio:     Card Intel 82801I (ICH9 Family) HD Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture v: k3.14-0.bpo.2-686-pae
Network:   Card: Intel 82566DM-2 Gigabit Network Connection
           driver: e1000e v: 2.3.2-k port: 1820 bus-ID: 00:19.0
           IF: eth0 state: up speed: 100 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 320.1GB (18.2% used)
           ID-1: /dev/sda model: WDC_WD3200AAKS size: 320.1GB
Partition: ID-1: / size: 51G used: 19G (40%) fs: ext4 dev: /dev/sda1
           ID-2: swap-1 size: 4.19GB used: 0.00GB (0%) fs: swap dev: /dev/sda5
Sensors:   System Temperatures: cpu: 55.0C mobo: N/A
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 158 Uptime: 1 day Memory: 760.4/3751.8MB
           Init: SysVinit runlevel: 5 Gcc sys: 4.7.2
           Client: Shell (bash 4.2.371) inxi: 2.2.19

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$ apt-cache policy antix-goodies
antix-goodies:
  Installed: 0.4.7.2
  Candidate: 0.4.7.2
  Version table:
 *** 0.4.7.2 0
        500 http://antix.daveserver.info/stable/ stable/main i386 Packages
        100 /var/lib/dpkg/status

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$ zram
Usage: /usr/local/bin/zram {start|stop|restart}
$ /usr/local/bin/zram start
/usr/local/bin/zram: line 39: modprobe: command not found
Your Kernel needs to be compiled with ZRAM support: 

Device Drivers --> Staging Drivers --> Compressed RAM block device support (M) 
Device Drivers --> Staging Drivers --> Dynamic compression of swap pages and clean pagecache pages (*) 

The Liquorix Kernel (http://liquorix.net) has ZRAM support built in.

I run a /swap partition on this desktop.

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$ sudo parted -l

Model: ATA WDC WD3200AAKS-0 (scsi)
Disk /dev/sda: 320GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  54.8GB  54.8GB  primary   ext4
 3      54.8GB  320GB   265GB   extended
 5      54.8GB  59.0GB  4194MB  logical   linux-swap(v1)
 6      59.0GB  320GB   261GB   logical   ext4

My MX-15 boxes are outside in the shop. Will check them later on tomorrow. I will post findings on those in the Mepis testing forum thread though. 64bit thread and 32 bit thread.

rokytnji · posted: 2015-11-04 05:34

My Bad. I am now back on my netbook running 4.2 kernel.
I ran zram in root terminal this time instead of as user.

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root@# zram start
zram devices probed successfully
Setting up swapspace version 1, size = 257172 KiB
no label, UUID=d0db192c-76da-4708-a8f6-5810c7b7f602
Setting up swapspace version 1, size = 257172 KiB
no label, UUID=10796b04-68f0-4812-8f26-e5b967f7a91f
# free
             total       used       free     shared    buffers     cached
Mem:       2057400     575444    1481956      27632      30064     242424
-/+ buffers/cache:     302956    1754444
Swap:       514344          0     514344
# parted -l
Model: ATA KingSpec KSD-ZF1 (scsi)
Disk /dev/sda: 63.3GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  8914MB  8913MB  primary  ext4
 2      8914MB  63.3GB  54.4GB  primary  ext4
Model: Unknown (unknown)
Disk /dev/zram0: 263MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags: 

Number  Start  End    Size   File system     Flags
 1      0.00B  263MB  263MB  linux-swap(v1)
Model: Unknown (unknown)
Disk /dev/zram1: 263MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags: 

Number  Start  End    Size   File system     Flags
 1      0.00B  263MB  263MB  linux-swap(v1)
# linuxinfo
Linux biker 4.2.1-antix.2-486-smp #5 SMP Wed Sep 30 15:14:04 EEST 2015
Two Intel Unknown 800MHz processors, 6384.14 total bogomips, 2009M RAM
System library 2.19.0

Can I get the command syntax to run zram at boot as user root for AntiX/icewm startup?
I guess I was doing something wrong earlier running zram as user. __{{emoticon}}__

rokytnji · posted: 2015-11-04 05:48

Jumped over to the MX-14 Desktop computer. Ran zram as root in terminal also on it.

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~
$ su
Password: 
root@# zram start
zram devices probed successfully
Setting up swapspace version 1, size = 480224 KiB
no label, UUID=6263bee5-dc45-4e37-b6ef-89c881d2e4e1
Setting up swapspace version 1, size = 480224 KiB
no label, UUID=b68cab29-b307-4b2f-ba20-2b2eca8c56f8
root@s# free
             total       used       free     shared    buffers     cached
Mem:       3841812    2527336    1314476          0     164256    1773116
-/+ buffers/cache:     589964    3251848
Swap:      5056444          0    5056444
root@# parted -l
Model: ATA WDC WD3200AAKS-0 (scsi)
Disk /dev/sda: 320GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  54.8GB  54.8GB  primary   ext4
 3      54.8GB  320GB   265GB   extended
 5      54.8GB  59.0GB  4194MB  logical   linux-swap(v1)
 6      59.0GB  320GB   261GB   logical   ext4
You found a bug in GNU Parted! Here's what you have to do:

Don't panic! The bug has most likely not affected any of your data.
Help us to fix this bug by doing the following:

Check whether the bug has already been fixed by checking
the last version of GNU Parted that you can find at:

    http://ftp.gnu.org/gnu/parted/

Please check this version prior to bug reporting.

If this has not been fixed yet or if you don't know how to check,
please visit the GNU Parted website:

    http://www.gnu.org/software/parted

for further information.

Your report should contain the version of this release (3.2)
along with the error message below, the output of

    parted DEVICE unit co print unit s print

and the following history of commands you entered.
Also include any additional information about your setup you
consider important.

Command History:
Segmentation fault
root@# apt-cache policy parted
parted:
  Installed: 3.2-4cmr120+1
  Candidate: 3.2-4cmr120+1
  Version table:
 *** 3.2-4cmr120+1 0
        500 http://main.mepis-deb.org/mepiscr/repo/ mepis12cr/main i386 Packages
        100 /var/lib/dpkg/status
     2.3-12 0
        500 http://ftp.us.debian.org/debian/ wheezy/main i386 Packages

# parted /dev/sda  unit co print unit s print
Model: ATA WDC WD3200AAKS-0 (scsi)
Disk /dev/sda: 320GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  54.8GB  54.8GB  primary   ext4
 3      54.8GB  320GB   265GB   extended
 5      54.8GB  59.0GB  4194MB  logical   linux-swap(v1)
 6      59.0GB  320GB   261GB   logical   ext4

Model: ATA WDC WD3200AAKS-0 (scsi)
Disk /dev/sda: 625142448s
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start       End         Size        Type      File system     Flags
 1      2048s       106958847s  106956800s  primary   ext4
 3      106958848s  625141759s  518182912s  extended
 5      106960896s  115152895s  8192000s    logical   linux-swap(v1)
 6      115154944s  625141759s  509986816s  logical   ext4

To late to file a bug report for me. One thing after another it seems. __{{emoticon}}__

SamK · posted: 2015-11-04 06:45

rokytnji wrote:Can I get the command syntax to run zram at boot as user root for AntiX/icewm startup?

Try the steps outlined in zram file

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sudo cp /usr/local/bin/zram  / etc/init.d/
sudo update-rc.d zram defaults

Reboot

Check whether zram loaded

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lsmod | grep zram
sudo swapon --summary

rokytnji · posted: 2015-11-04 13:19

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harry@biker:~
$ lsmod | grep zram
zram                   24576  2 
lz4_compress           16384  1 zram
harry@biker:~
$ sudo swapon --summary
[sudo] password for harry: 
Filename                Type        Size    Used    Priority
/dev/zram0                                 partition    257172    0    100
/dev/zram1                                 partition    257172    0    100

Thank you very much SamK. Readout is after a reboot on this netbook.

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$ linuxinfo
Linux biker 4.2.1-antix.2-486-smp #5 SMP Wed Sep 30 15:14:04 EEST 2015
Two Intel Unknown 1600MHz processors, 6383.92 total bogomips, 2009M RAM
System library 2.19.0

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$ free
             total       used       free     shared    buffers     cached
Mem:       2057400     564356    1493044      35036      29436     247932
-/+ buffers/cache:     286988    1770412
Swap:       514344          0     514344

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$ sudo parted -l
Model: ATA KingSpec KSD-ZF1 (scsi)
Disk /dev/sda: 63.3GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  8914MB  8913MB  primary  ext4
 2      8914MB  63.3GB  54.4GB  primary  ext4
Model: Unknown (unknown)
Disk /dev/zram0: 263MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags: 

Number  Start  End    Size   File system     Flags
 1      0.00B  263MB  263MB  linux-swap(v1)
Model: Unknown (unknown)
Disk /dev/zram1: 263MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags: 

Number  Start  End    Size   File system     Flags
 1      0.00B  263MB  263MB  linux-swap(v1)

I love learning something new every day. __{{emoticon}}__

SamK · posted: 2015-11-05 07:36

rokytnji wrote:I love learning something new every day.

With zram working there are plenty of opportunities for that.

Things to explore...

If the amount of swap space created by zram is not large enough for your needs you might partner zram swap with a conventional swap file. You have the choice of starting them manually and individually after boot-up, or automatically during boot-up (zram via /etc/init.d/zram and swap file via /etc/rc.local).

If you use zram and a swap file in partnership, you might want to manage the order in which they are used. A swap space in RAM is faster than a swap file in conventional storage. Consider whether there is any benefit to your local system in assigning the zram swap space a higher priority than the swap file. zram space is usually created with a priority of 100. Assign a lower priority to the swap file (e.g. 90) when activating via the swapon command.

The way in which your system handles any and all swap spaces can be tuned with plenty of scope for experimentaion. The following are entries that I have used for some years as starting points in /etc/sysctl.d/local.conf. They are then adjusted to suit the characteristics of the particular system.

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# Uncomment the following two values to improve percieved system performance
# Threshold at which swapping starts
# Values lower than default favour filling physical RAM before begining to use a swap area 
# Default vm.swappiness=60
vm.swappiness=10
#
# Threshold at which the directory and inode caches are reclaimed
# Values lower than default favour retaining them rather than recovering the memory they occupy
# Default vm.vfs_cache_pressure=100
vm.vfs_cache_pressure=50

A related matter...

I know you are moving to newer kit than previously. I mention the following just in case you try zram on older kit.

The basic action of zram is to create a swap space per CPU in the local system (zram0, zram1...). In a modern system with multiple CPUs the shipped zram script does this OK. In an older single CPU system the shipped zram script calculates the number incorrectly and therefore creates an incorrect number of swap spaces. It still works but just with the wrong number of swap spaces.

Because antiX is aimed at both modern and older kit I found the shipped zram script disappointing and unsatisfactory. Eventually I decided to do something about it and rewrote my own version of the zram script which works correctly with both single and multiple CPU systems.