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Thread: Shy Crocodile version 5.0 ...

  1. #11
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    Re: Shy Crocodile version 5.0 ...

    Quote Originally Posted by corradoventu View Post
    dpkg: dependency problems prevent configuration of linux-headers-5.0.0-050000rc2-generic:i386:
    linux-headers-5.0.0-050000rc2-generic:i386 depends on libc6 (>= 2.11).
    linux-headers-5.0.0-050000rc2-generic:i386 depends on libssl1.1 (>= 1.1.0).

    dpkg: error processing package linux-headers-5.0.0-050000rc2-generic:i386 (--install):
    dependency problems - leaving unconfigured
    For libssl1.1: As far as I know, that annoying dependency problem has been there since kernel 4.17-rc1 for systems that still use libssl1.0.0, such as my main 16.04 test server. I say "annoying" because I don't think it is needed. I have been using my steal the kernel config file and compile it myself workaround for over 8 months now without any issue related to libssl.

    For libc6: I haven't seen that one, but I wouldn't because even my 16.04 test server is at libc6:
    Code:
    doug@s15:~$ dpkg -l | grep libc6
    ii  libc6:amd64                                   2.23-0ubuntu10                             amd64        GNU C Library: Shared libraries
    ii  libc6-dev:amd64                               2.23-0ubuntu10                             amd64        GNU C Library: Development Libraries and Header Files
    doug@s15:~$ uname -a
    Linux s15 5.0.0-rc2-teo11 #536 SMP PREEMPT Sun Jan 13 17:35:32 PST 2019 x86_64 x86_64 x86_64 GNU/Linux
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  2. #12
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    Re: Shy Crocodile version 5.0 ...

    Quote Originally Posted by Doug S View Post
    For libssl1.1: As far as I know, that annoying dependency problem has been there since kernel 4.17-rc1 for systems that still use libssl1.0.0, such as my main 16.04 test server. I say "annoying" because I don't think it is needed. I have been using my steal the kernel config file and compile it myself workaround for over 8 months now without any issue related to libssl.

    For libc6: I haven't seen that one, but I wouldn't because even my 16.04 test server is at libc6:
    Code:
    doug@s15:~$ dpkg -l | grep libc6
    ii  libc6:amd64                                   2.23-0ubuntu10                             amd64        GNU C Library: Shared libraries
    ii  libc6-dev:amd64                               2.23-0ubuntu10                             amd64        GNU C Library: Development Libraries and Header Files
    doug@s15:~$ uname -a
    Linux s15 5.0.0-rc2-teo11 #536 SMP PREEMPT Sun Jan 13 17:35:32 PST 2019 x86_64 x86_64 x86_64 GNU/Linux
    +1

    Code:
    dmesg | grep Linux
    [    0.000000] Linux version 5.0.0-050000rc2-lowlatency (kernel@kathleen) (gcc version 8.2.0 (Ubuntu 8.2.0-12ubuntu1)) #201901171452 SMP PREEMPT Thu Jan 17 14:56:34 UTC 2019
    [    0.164617] ACPI: Added _OSI(Linux-Dell-Video)
    [    0.164617] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
    [    0.164617] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
    [    0.179976] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
    [    0.204612] pps_core: LinuxPPS API ver. 1 registered
    [    1.254283] Linux agpgart interface v0.103
    [    1.336594] usb usb1: Manufacturer: Linux 5.0.0-050000rc2-lowlatency ehci_hcd
    [    1.347600] usb usb2: Manufacturer: Linux 5.0.0-050000rc2-lowlatency ehci_hcd
    [    1.349572] usb usb3: Manufacturer: Linux 5.0.0-050000rc2-lowlatency xhci-hcd
    [    1.350320] usb usb4: Manufacturer: Linux 5.0.0-050000rc2-lowlatency xhci-hcd
    [   14.635161] media: Linux media interface: v0.10
    [   14.761124] videodev: Linux video capture interface: v2.00
    [   14.888941] Intel(R) Wireless WiFi driver for Linux
    And:
    Code:
    dpkg -l | grep libc6
    ii  libc6:amd64                                                 2.27-3ubuntu1                         amd64        GNU C Library: Shared libraries
    ii  libc6:i386                                                  2.27-3ubuntu1                         i386         GNU C Library: Shared libraries
    ii  libc6-dbg:amd64                                             2.27-3ubuntu1                         amd64        GNU C Library: detached debugging symbols
    ii  libc6-dev:amd64                                             2.27-3ubuntu1                         amd64        GNU C Library: Development Libraries and Header Files
    With realization of one's own potential and self-confidence in one's ability, one can build a better world.
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  3. #13
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    Re: Shy Crocodile version 5.0 ...

    HU:
    /etc/initramfs-tools/initramfs.conf
    If You use
    Code:
    MODULES=dep
    You could get segmentation fault in kernel image and, no boot next time...
    Use
    Code:
    MODULES=most
    for some time...

    Update₁: Segmentation fault persists even after proper update-initramfs. Confirmed on two machines rendered unbootable... HU... I'm not sure if that is recoverable, will investigate more...
    Last edited by zika; January 21st, 2019 at 08:11 AM.
    Ignota nulla curatio morbi.

  4. #14
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    Re: Shy Crocodile version 5.0 ...

    Kernel 5.0-rc3 is available from kernel.org. For Ubuntu, the daily build seems to be broken again, hence the Mainline PPA doesn't yet have a compiled candidate to try.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  5. #15
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    Re: Shy Crocodile version 5.0 ...

    Note that the CFQ IO Scheduler is gone in this kernel 5.0-rc series. It used to be the default IO Scheduler.
    see commit 0e9da3fbf7d81f0f913b491c8de1ba7883d4f217.

    Code:
    doug@s15:~$ uname -a
    Linux s15 5.0.0-rc3-teo11 #537 SMP PREEMPT Mon Jan 21 07:54:50 PST 2019 x86_64 x86_64 x86_64 GNU/Linux
    doug@s15:~$ cat /sys/block/sda/queue/scheduler
    [none]
    Code:
    doug@s15:~$ uname -a
    Linux s15 4.19.0-stock #511 SMP PREEMPT Fri Oct 26 18:03:55 PDT 2018 x86_64 x86_64 x86_64 GNU/Linux
    doug@s15:~$ cat /sys/block/sda/queue/scheduler
    noop deadline [cfq]
    For some unknown reason, for the kernel 4.20-rc series the list also shows only "[none]".
    Code:
    doug@s15:~/temp-k-git/linux$ scripts/diffconfig .config-4.20-rc5-teo8 .config
    ...
    -CFQ_GROUP_IOSCHED y
    -DEFAULT_CFQ y
    -DEFAULT_DEADLINE n
    -DEFAULT_IOSCHED "cfq"
    -DEFAULT_NOOP n
    -DMA_DIRECT_OPS y
    -INTEL_RDT y
    -IOSCHED_CFQ y
    -IOSCHED_DEADLINE y
    -IOSCHED_NOOP y
    ...
    Last edited by Doug S; January 22nd, 2019 at 07:56 PM.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  6. #16
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    Re: Shy Crocodile version 5.0 ...

    Kernel 5.0-rc3 from https://kernel.ubuntu.com/~kernel-pp...line/v5.0-rc3/ seems ok
    Code:
    corrado@corrado-p13-dd-1107-x:~$ inxi -SCGx
    System:    Host: corrado-p13-dd-1107-x Kernel: 5.0.0-050000rc3-generic x86_64 bits: 64 compiler: gcc 
               v: 8.2.0 Desktop: Gnome 3.30.2 Distro: Ubuntu 19.04 (Disco Dingo) 
    CPU:       Topology: Dual Core model: Intel Core i3-7100 bits: 64 type: MT MCP arch: Kaby Lake 
               rev: 9 L2 cache: 3072 KiB 
               flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 31296 
               Speed: 800 MHz min/max: 800/3900 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 
    Graphics:  Device-1: Intel HD Graphics 630 vendor: ASRock driver: i915 v: kernel bus ID: 00:02.0 
               Display: x11 server: X.Org 1.20.3 driver: fbdev unloaded: modesetting,vesa 
               resolution: 1920x1080~60Hz 
               OpenGL: renderer: Mesa DRI Intel HD Graphics 630 (Kaby Lake GT2) v: 4.5 Mesa 18.2.6 
               direct render: Yes 
    corrado@corrado-p13-dd-1107-x:~$

  7. #17
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    Re: Shy Crocodile version 5.0 ...

    On the subject of the IO scheduler: The ubuntu kernel configuration for kernel 5.0-rc3 has a change, compared to -rc1 (I never used Ubuntu's -rc2 kernel config), that results in this:

    Code:
    ~$ cat /sys/block/sda/queue/scheduler
    [mq-deadline] none
    The diff:
    Code:
    $ scripts/diffconfig .config-5.0-rc3-teo11-1 .config-5.0-rc3-teo11-2
     CRYPTO_STATS n -> y
     MQ_IOSCHED_DEADLINE m -> y
     MTD_PHYSMAP_GPIO_ADDR n -> y
     VIDEO_SECO_RC n -> y
     X86_RESCTRL n -> y
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  8. #18
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    Re: Shy Crocodile version 5.0 ...

    Doug is this on a SSD drive?
    I have seen this since 4.19
    Code:
    uname -a && cat /sys/block/sda/queue/scheduler
    Linux arch 4.20.4.a-1-hardened #1 SMP PREEMPT Fri Jan 25 01:24:51 CET 2019 x86_64 GNU/Linux
    [mq-deadline] kyber bfq none
    I do have a SSD drive
    Code:
    inxi -Dz
    Drives:
      Local Storage: total: 1.98 TiB used: 256.65 GiB (12.6%) 
      ID-1: /dev/sda vendor: Intel model: SSDSC2BW180A3L size: 167.68 GiB 
      ID-2: /dev/sdb type: USB vendor: Western Digital model: WD My Passport 25E1 
      size: 1.82 TiB
    Also for Ubuntu:
    Code:
    uname -a && cat /sys/block/sda/queue/scheduler && inxi -Dz
    Linux me-750-417c 5.0.0-050000rc3-lowlatency #201901202030 SMP PREEMPT Mon Jan 21 01:44:29 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
    [mq-deadline] none
    Drives:
      Local Storage: total: 2.04 TiB used: 25.86 GiB (1.2%) 
      ID-1: /dev/sda vendor: Intel model: SSDSC2BW180A3L size: 167.68 GiB 
      ID-2: /dev/sdb type: USB vendor: SanDisk model: Ultra size: 57.28 GiB 
      ID-3: /dev/sdc type: USB vendor: Western Digital 
      model: WD My Passport 25E1 size: 1.82 TiB
    This install is on " ID-2: /dev/sdb type: USB vendor: SanDisk model: Ultra size: 57.28 GiB "

    • The Completely Fair Queuing (CFQ) scheduler is the default algorithm in Red Hat Enterprise Linux 4 which is suitable for a wide variety of applications and provides a good compromise between throughput and latency. In comparison to the CFQ algorithm, the Deadline scheduler caps maximum latency per request and maintains a good disk throughput which is best for disk-intensive database applications.
    • The Budget Fair Queuing (BFQ) is based on CFQ code and brings some enhancements. It does not grant the disk to each process for a fixed time-slice but assigns a "budget" measured in number of sectors to the process and uses heuristics. It is a relatively complex scheduler, it may be more adapted to rotational drives and slow SSDs because its high per-operation overhead, especially if associated with a slow CPU, can slow down fast devices. The objective of BFQ on personal systems is that for interactive tasks, the storage device is virtually as responsive as if it was idle. In its default configuration it focuses on delivering the lowest latency rather than achieving the maximum throughput.
    • Kyber is a recent scheduler inspired by active queue management techniques used for network routing. The implementation is based on "tokens" that serve as a mechanism for limiting requests. A queuing token is required to allocate a request, this is used to prevent starvation of requests. A dispatch token is also needed and limits the operations of a certain priority on a given device. Finally, a target read latency is defined and the scheduler tunes itself to reach this latency goal. The implementation of the algorithm is relatively simple and it is deemed efficient for fast devices.


    Code:
    me on Sat Jan 26 at 08:17 AM in ~ branch: (HEAD) 
    >> uname -a && cat /sys/block/sda/queue/scheduler
    Linux arch 4.20.4.a-1-hardened #1 SMP PREEMPT Fri Jan 25 01:24:51 CET 2019 x86_64 GNU/Linux
    [mq-deadline] kyber bfq none
    
    me on Sat Jan 26 at 08:23 AM in ~ branch: (HEAD) 
    >> uname -a && cat /sys/block/sda/queue/scheduler
    Linux arch 4.20.4.a-1-hardened #1 SMP PREEMPT Fri Jan 25 01:24:51 CET 2019 x86_64 GNU/Linux
    mq-deadline kyber [bfq] none
    
    
    me on Sat Jan 26 at 08:23 AM in ~ branch: (HEAD) 
    >> uname -a && cat /sys/block/sda/queue/scheduler
    Linux arch 4.20.4.a-1-hardened #1 SMP PREEMPT Fri Jan 25 01:24:51 CET 2019 x86_64 GNU/Linux
    mq-deadline [kyber] bfq none
    Last edited by 1fallen; January 26th, 2019 at 05:38 PM.
    With realization of one's own potential and self-confidence in one's ability, one can build a better world.
    Dalai Lama>>
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  9. #19
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    Re: Shy Crocodile version 5.0 ...

    Quote Originally Posted by 1fallen View Post
    Doug is this on a SSD drive?
    I have seen this since 4.19
    Code:
    uname -a && cat /sys/block/sda/queue/scheduler
    Linux arch 4.20.4.a-1-hardened #1 SMP PREEMPT Fri Jan 25 01:24:51 CET 2019 x86_64 GNU/Linux
    [mq-deadline] kyber bfq none
    No, the drive is a regular sata magnetic drive. Very interesting though, what you get on arch. I don't recall how long ago, but I tried to get kyber and bfq to work on an Ubuntu kernel and was not successful. I tried kernel some various kernel configuration changes and also some kernel command line changes. This is one of my old attempts in grub:
    Code:
    #GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 consoleblank=300 scsi_mod.use_blk_mq=1 elevator=kyber"
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  10. #20
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    HU: USB NIC on Shy Crocodile version 5.0 drm-tip and daily ...

    5.0.0-999-generic #201901262102 USB NIC works as it did for a long time...
    5.0.0-994-generic #201901262102 USB NIC does not work/get_recognized even after loading usbnet module... We will see if that just a glitch today or is a decision... Nothing in CHANGES file that I found does not point to deliberate decision...
    Will investigate more if/when get some spare time...
    Tested, of course, with several USB/NIC products...
    Update₁: 5.0.0-994-generic #201901280501 : (re)solved... USB NIC works as it should...
    Update₂: 5.0.0-994-generic #201902052101 : again, does not...
    Update₃: 5.0.0-994-generic #201902062104 : again, works as it should...
    Last edited by zika; February 7th, 2019 at 08:30 AM.
    Ignota nulla curatio morbi.

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