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    Low Latency Kernel and Kubuntu

    I have 18.04 up and running well, but I'd like to install the low latency kernel and possibly the KXStudio repositories or the Ubuntu Studio repositories.

    Does anyone have any experience in this? Or recommendations?

    #2
    A few years ago, in other distro, I try a low latency kernel...humm...I don't suggest this, I prefer default kernel.

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      #3
      @here, the lowlatency kernel caused several issues (I'm still on 16.04 however).

      The general advice is; unless you know you really need the lowlatency kernel, don't use it.

      More directly to your question, you can install it without removing other kernels and try it out. If it works OK then keep it. If not, uninstall it - no-harm-no-foul.

      Please Read Me

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        #4
        I found an article that stated it was unnecessary to install a realtime kernel, that you could add the following to

        etc/security/limits.conf

        user -- rtprio 99
        user -- memlock unlimited
        user -- nice -10

        would this work?

        Comment


          #5
          Originally posted by papapenguin View Post
          I found an article that stated it was unnecessary to install a realtime kernel, that you could add the following to

          etc/security/limits.conf

          user -- rtprio 99
          user -- memlock unlimited
          user -- nice -10

          would this work?
          Probably will. From the limits.conf file:
          Code:
          #<domain>        <type>  <item>  <value>
          #
          #Where:
          #<domain> can be:
          #        - a user name
          #        - a group name, with @group syntax
          #        - the wildcard *, for default entry
          #        - the wildcard %, can be also used with %group syntax,
          #                 for maxlogin limit
          #        - NOTE: group and wildcard limits are not applied to root.
          #          To apply a limit to the root user, <domain> must be
          #          the literal username root.
          #
          #<type> can have the two values:
          #        - "soft" for enforcing the soft limits
          #        - "hard" for enforcing hard limits
          #
          #<item> can be one of the following:
          #        - core - limits the core file size (KB)
          #        - data - max data size (KB)
          #        - fsize - maximum filesize (KB)
          #        - memlock - max locked-in-memory address space (KB)
          #        - nofile - max number of open files
          #        - rss - max resident set size (KB)
          #        - stack - max stack size (KB)
          #        - cpu - max CPU time (MIN)
          #        - nproc - max number of processes
          #        - as - address space limit (KB)
          #        - maxlogins - max number of logins for this user
          #        - maxsyslogins - max number of logins on the system
          #        - priority - the priority to run user process with
          #        - locks - max number of file locks the user can hold
          #        - sigpending - max number of pending signals
          #        - msgqueue - max memory used by POSIX message queues (bytes)
          #        - nice - max nice priority allowed to raise to values: [-20, 19]
          #        - rtprio - max realtime priority
          #        - chroot - change root to directory (Debian-specific)
          #
          #<domain>      <type>  <item>         <value>
          #
          
          #*               soft    core            0
          #root            hard    core            100000
          #*               hard    rss             10000
          #@student        hard    nproc           20
          #@faculty        soft    nproc           20
          #@faculty        hard    nproc           50
          #ftp             hard    nproc           0
          #ftp             -       chroot          /ftp
          #@student        -       maxlogins       4
          All your items are listed. Give it a try. If it doesn't work you can always remove the changes. (Even if you have to boot into a LiveUSB and edit the file from there).
          "A nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people.”
          – John F. Kennedy, February 26, 1962.

          Comment


            #6
            well, it seems to work so far...

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