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Baidu Geek Talk

Apr 21, 2021 · Backend Development

Performance Optimization in Baidu's C++ Backend: Memory Allocation and Access Techniques

Baidu engineers boost C++ backend latency and cost efficiency by eliminating unnecessary string zero‑initialization, using zero‑copy split with SIMD, replacing deep protobuf merges with repeated string fields, employing job‑scoped arenas and custom memory resources for allocation, and applying prefetching, cache‑line awareness, and tuned memory‑order semantics, achieving multiplicative to order‑of‑magnitude speedups.

C++Memory AccessMemory Allocation

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Performance Optimization in Baidu's C++ Backend: Memory Allocation and Access Techniques

Architects' Tech Alliance

Nov 19, 2020 · Fundamentals

PCIe Device Enumeration and Memory Access Overview

This article explains how a host discovers and configures PCIe devices through a depth‑first enumeration process, describes the BDF addressing scheme, and illustrates memory‑mapped I/O interactions such as NVMe command submission using Linux lspci commands.

Device EnumerationHardware fundamentalsMemory Access

0 likes · 9 min read

PCIe Device Enumeration and Memory Access Overview

Architects' Tech Alliance

Mar 10, 2019 · Fundamentals

PCIe Device Enumeration and Memory Access in x86 Systems

This article explains how PCIe devices are discovered and accessed in an x86 system, detailing the hierarchical bus topology, depth‑first enumeration steps, configuration space handling, Linux lspci inspection, and NVMe command transmission through PCIe memory transactions.

Device EnumerationMemory AccessNVMe

0 likes · 10 min read

PCIe Device Enumeration and Memory Access in x86 Systems