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Open nowPosted 76 days ago

性能优化专家（智能座舱NJ）

yesv-desaysv/index444 open roles

Where
Nanjing, Jiangsu, Chinese Mainland
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Your applicationOpen now性能优化专家（智能座舱NJ）yesv-desaysv/index · Nanjing, Jiangsu, Chinese Mainland

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on yesv-desaysv/index's own form.

The reply lands in your private mailbox

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The clock on this job

Early applications get read.

12.1% of postings close within 7 days. Measured by our own scanner across the market. yesv-desaysv/index postings stay open a median of 1 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.5%3 days
  3. 12.1%7 days
  4. 19.1%14 days
  5. 35.6%30 days
  6. 52.7%60 days
This job: posted 76 days ago

yesv-desaysv/index median: 1 days open

The posting

1、内核定制与裁剪：根据产品硬件平台和业务场景，对 Linux 内核进行定制化配置、模块裁剪与功能增强，提升启动速度与运行效率。 2、系统性能分析与调优：使用 perf、ftrace、eBPF、SystemTap 等工具对 CPU、内存、I/O、网络等子系统进行深度性能剖析，识别瓶颈并实施优化。 3、调度器与实时性优化：针对低延迟或高吞吐需求，调整 CFS 调度策略、优化 RT 调度参数，或设计适配特定硬件架构（如 ARM Big.LITTLE）的任务分配机制。 4、内存管理优化：优化页分配、slab/slub、OOM 行为、swap 策略等，提升内存使用效率，减少碎片与延迟抖动。 5、文件系统与存储栈调优：针对嵌入式设备或服务器场景，优化 ext4/xfs/btrfs 或 overlayfs 等文件系统参数，提升 I/O 性能与可靠性。 6、内核稳定性保障：分析并解决内核 panic、soft lockup、hard lockup、RCU stall 等疑难问题，提升系统长期运行稳定性。 7、技术方案设计与评审：主导内核级性能优化方案的设计、验证与落地，参与系统架构评审，提供底层技术支撑。 8、文档与知识沉淀：撰写内核配置指南、调优手册、故障排查流程等技术文档，推动团队内核能力提升。

核心技术能力： 1、精通 C 语言，熟悉 GNU 工具链、交叉编译环境及内核构建流程（Kbuild）； 2、深入理解 Linux 内核核心子系统：进程调度、内存管理、中断处理、VFS、块设备、网络协议栈等； 3、熟练使用 内核调试与性能分析工具：GDB/KGDB、crash、perf、ftrace、eBPF、Valgrind、strace 等； 4、熟悉 主流文件系统（ext4, XFS, Btrfs, OverlayFS）及 I/O 调度器（CFQ, BFQ, Deadline, NOOP）； 5、了解 ARM/x86 架构，具备 SoC 平台（如 NXP、Rockchip、Qualcomm、Intel）开发经验者优先。

加分项： 1、有实时 Linux（PREEMPT_RT） 或 低延迟系统 开发经验； 2、参与过开源社区（如 LKML）或向主线内核提交过补丁； 3、熟悉容器底层技术（cgroup v1/v2、namespace、seccomp）或虚拟化（KVM/QEMU）性能调优； 4、具备 自动化性能测试框架 搭建经验（如 LTP、Phoronix Test Suite、自研 benchmark）。

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