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Turning off HyperThread by BIOS or kernel?
andras.tim asked: Is there any performance difference between these disabled HyperThread scenarios? Which is the best, and why? Disable HT in BIOS Use noht kernel parameter The high-optimized parallel...
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Why am I having issues upgrading the kernel on a fresh Ubuntu 16.04...
Brian Tkatch asked: I signed up for a Linux VPS. This VPS comes with an older Linux kernel, and I would like to upgrade it because some software I want to run requires a newer version. This is the...
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Why does Linux answer to ARP on incorrect interfaces?
juhist asked: I have the following Linux networking setup: there is an eth10 network interface with the assigned address 10.11.0.1/24. Then there is a tap0 network interface with assigned dummy...
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Networking in Linux KVM
codingfreak asked: I want to know if there is any way other than using linux bridges to interconnect interfaces from two virtual machines ? Since I am trying to run private spanning tree...
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Where to get newer RHEL 7 kernel mentioned on bugzilla.redhat.com (for CentOS)
Pavel asked: I am using Centos 7.4 and have encountered a bug, which I found a solution for: https://bugzilla.redhat.com/show_bug.cgi?id=1502601 The problem is, solution mentions that bug is fixed in...
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how to decently configure net.ipv4.neigh.default.gc_thresh_n
vinni_f asked: We recently had a storm of kernel: neighbour: arp_cache: neighbor table overflow! errors on some nodes of our kubernetes cluster. After research we’ve figured out that we needed to bump...
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Unable to build initscripts package
UnicsSol asked: I have some patches that I added in spec files and after adding those patches I am unable to build the rpm package. Obsoletes: hotplug <= 3:2004_09_23-10.1 Processing files:...
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pcie SR-IOV driver howto
risonwung asked: I am trying to know how linux PCIE NIC SR-IOV work. I am using a Unbuntu with Intel 82599 NIC as a host. Under NIC driver directory(ixgbe) in linux Kernel, there is a file named...
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How to list the capabilities associated with a process in *nix systems?
samshers asked: From – man capabilities UNIX implementations distinguish two categories of processes: privileged processes (whose effective user ID is 0, referred to as superuser or root), and...
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Is BBR congestion control available on my host or not
milosgajdos asked: I have been looking into enabling bbr congestion control on some of our servers to test if they make any difference for our workloads. We are on Amazon Linux 2: # uname -a Linux...
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