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Kernel: NVMeTCP and -O3 C Flag in GCC

Submitted by Roy Schestowitz on Saturday 5th of June 2021 04:32:47 PM Filed under
Linux
  • NVMeTCP Offload Bits Coming For Linux 5.14 To Lower CPU Utilization, Better Latency - Phoronix

    Adding to other networking changes queuing up for the upcoming Linux 5.14 cycle, NVMeTCP Offload has begun landing into "net-next" ahead of this next kernel merge window.

    Queued this week into net-next is the NVMeTCP Offload ULP host layer support as part of the broader ongoing effort for complete NVMeTCP Offload infrastructure for use by relevant network drivers/hardware. NVMeTCP Offload will provide full offloading of the NVMeTCP protocol, including the TCP level.

  • -O3 Compiler Optimization Level Still Deemed Too Unsafe For The Linux Kernel - Phoronix

    Due to not too old versions of the GNU Compiler Collection (GCC) possibly generating bad code with the "-O3" compiler optimization level and sometimes there not being performance benefits, Linus Torvalds remains against using this optimization flag when compiling the Linux kernel.

    Sent in this week as part of the networking fixes for the Linux 5.13 kernel were WireGuard fixes that among them dropped compiling the WireGuard module with the "-O3" C flag.

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