12之前 initial RTO是⼀个常数1s • 应⽤类型BPF_PROG_TYPE_SOCK_OPS • HOOK BPF_SOCK_OPS_TIMEOUT_INIT • 内核中调⽤栈 • tcp_timeout_init • tcp_call_bpf(BPF_SOCK_OPS_TIMEOUT_INI T) • bpf_cgrougp_run_sock_ops • … • 写cache流程基于inode cache优化 • bpf程序类型 BPF_PROG_TYPE_EXTFUSE • Hook点及⽅法 • fuse_request_send • FUSE_LOOKUP / FUSE_GETATTR / FUSE_SETATTR / • map 结构 • dentry map BPF_MAP_TYPE_HASH • key (inode (inode id, node name) • value inode id • inode map BPF_MAP_TYPE_HASH • key inode id • value fuse_attr (⽂件属性)基于data cache部分 • bpf程序类型 BPF_PROG_TYPE_EXTFUSE • Hook点及⽅法 • fuse_file_read_iter, fuse_file_write_iter

growing complexity © 2021, YUNSHAN Networks Technology Co., Ltd. All rights reserved. 实战 实战1 采集器怎么运行 实战2 BPF和eBPF怎么配合 实战3 如何与eBPF交互 实战4 eBPF kprobe挂在哪 实战5 eBPF uprobe挂在哪 实战6 怎样编码 实战7 怎样传输 实战8 怎样打标签 实战9 怎样存储与检索

interfaces report operstate UP only when they have VMs at- tached (bug #14526) • Mac OS X hosts: fix bpf capture and accounting of traffic on bridged and host-only inter- faces (bug #14553) • Windows guests:

interfaces report operstate UP only when they have VMs at- tached (bug #14526) • Mac OS X hosts: fix bpf capture and accounting of traffic on bridged and host-only inter- faces (bug #14553) • Windows guests:

system. Useful references: • Julia Evans blog on Linux tracing systems • LWN article on USDT and BPF • GDB support for probes • Brendan Gregg – Linux PerformanceChapter 103 Building Julia 103.1 Building

system. Useful references: • Julia Evans blog on Linux tracing systems • LWN article on USDT and BPF • GDB support for probes • Brendan Gregg – Linux PerformanceChapter 103 Building Julia 103.1 Building

system. Useful references: • Julia Evans blog on Linux tracing systems • LWN article on USDT and BPF • GDB support for probes • Brendan Gregg – Linux PerformanceChapter 107 Building Julia 107.1 Building

system. Useful references: • Julia Evans blog on Linux tracing systems • LWN article on USDT and BPF • GDB support for probes • Brendan Gregg – Linux PerformanceChapter 107 Building Julia 107.1 Building

system. Useful references: • Julia Evans blog on Linux tracing systems • LWN article on USDT and BPF • GDB support for probes • Brendan Gregg – Linux PerformanceChapter 107 Building Julia 107.1 Building

system. Useful references: • Julia Evans blog on Linux tracing systems • LWN article on USDT and BPF • GDB support for probes • Brendan Gregg – Linux PerformanceChapter 108 Building Julia 108.1 Building