将晦涩难懂的技术讲的通俗易懂
| 标题 | 阅读 | 评论 | 转发 | 发布日期 | |
|---|---|---|---|---|---|
| 【推荐】 NCCL源码解析7——RDMA建连 | 1016 | 0 | 0 | 2025-04-14 | |
| NCCL源码解析6——channel setup | 777 | 0 | 0 | 2025-03-23 | |
| RDMA为什么要Pin内存？ | 520 | 0 | 0 | 2025-03-16 | |
| NCCL源码解析5——跨机channel合并 | 845 | 0 | 0 | 2025-03-09 | |
| NCCL概述和NCCL-Test分析 | 1257 | 0 | 0 | 2025-02-23 | |
| Lossy网络的RoCE方案——IRN | 625 | 0 | 0 | 2025-01-17 | |
| NCCL源码解析4——channel搜索 | 1350 | 0 | 0 | 2025-01-05 | |
| NCCL源码解析3——拓扑生成 | 1132 | 0 | 0 | 2025-01-01 |
吻的感觉适2025-07-18 23:22
https://txc.qq.com/products/762843/blog/2022630
https://txc.qq.com/products/762814/blog/2022624
https://txc.qq.com/products/762833/blog/2022632
https://txc.qq.com/products/762839/blog/2022631
https://txc.qq.com/products/762835/blog/2022633
https://txc.qq.com/products/762845/blog/2022634
https://txc.qq.com/products/762810/blog/2022636
https://txc.qq.com/products/762848/blog/2022637
https://txc.qq.com/products/762843/blog/2022638
https://txc.qq.com/products/762814/blog/2022639
https://txc.qq.com/products/762839/blog/2022640
https://txc.qq.com/products/762833/blog/2022642
https://txc.qq.com/products/762810/blog/2022644
https://txc.qq.com/products/762843/blog/2022645
https://txc.qq.com/products/762814/blog/2022647
https://txc.qq.com/products/762833/blog/2022648
https://txc.qq.com/products/762843/blog/2022650
zf8292024-11-13 13:41
zf829：您好，请教大神一个问题，设备直通给VM时，中断到底会不会导致VM_EXIT吗，如果会，那VIRTIO直通时还会导致IO性能下降吧？“当透传设备产生中断时，vfio_msihandler ISR执行，该函数不做实际的服务程序处理，仅仅通过eventfd_signal激活irqfd_inject，然后最终调用deliver_posted_interrupt向虚机注入中断，中断号即为虚机配置透传设备时的中断号。” 这段描述在代码上我也仔细看了，逻辑肯定是对的，但另一方面我还是不确定中断到底会不会导致VM_EXIT
这里的中断主要是指数据包收发的中断
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