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RouterOS L2 Loop Protect

 

 

Openwrt on VM(x86)

最後更新: 2022-02-07

介紹

 

 * 它有 VGA 及 serial port console

 * Console 是沒有 login 的 (直入)

 * 第一個 NIC (eth0) 會被綁到 br-lan

 * HDD (vda) 及 NIC 都支持 Virtio

Version

openwrt-21.02    ->    Linux 5.4

 

NUMA 架構

最後更新: 2022-02-07

介紹

NUMA: Non-Uniform Memory Architecture

In a NUMA system, processors, memory, and I/O are grouped together into nodes/cells.

The memory in NUMA systems is physically distributed but logically shared.

Under NUMA, a processor can access its own local memory faster than non-local memory

Each of the ‘cells’ may be viewed as an SMP [symmetric multi-processor]

(Cell 1)                   (Cell 2)
CPU 1 --- Inter-connect --- CPU 2
 |                           |
RAM 1                       RAM 2

Inter-Connect

  • AMD: Hyper Transport (HT) interconnect
  • Intel: Quick Path Interconnect (QPI)

應用: Super Computers (解決多 Core 到 Memory 的 bottleneck)

目錄

  • Nodes Info.
  • BIOS Setting: Node interleaving

 

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