最終更新:2021-02-15 (月) 03:50:40 (1158d)
perf-tools
Top / perf-tools
https://github.com/brendangregg/perf-tools
Using ftrace:
- iosnoop: trace disk I/O with details including latency.
- iolatency: summarize disk I/O latency as a histogram.
- execsnoop: trace process exec() with command line argument details.
- opensnoop: trace open() syscalls showing filenames.
- killsnoop: trace kill() signals showing process and signal details.
- fs/cachestat?: basic cache hit/miss statistics for the Linux page cache.
- net/tcpretrans?: show TCP retransmits, with address and other details.
- system/tpoint?: trace a given tracepoint.
- kernel/funccount?: count kernel function calls, matching a string with wildcards.
- kernel/functrace?: trace kernel function calls, matching a string with wildcards.
- kernel/funcslower?: trace kernel functions slower than a threshold.
- kernel/funcgraph?: trace a graph of kernel function calls, showing children and times.
- kernel/kprobe?: dynamically trace a kernel function call or its return, with variables.
- user/uprobe?: dynamically trace a user-level function call or its return, with variables.
- tools/reset-ftrace?: reset ftrace state if needed.
Using perf_events?:
- misc/perf-stat-hist?: power-of aggregations for tracepoint variables.
- syscount?: count syscalls by syscall or process.
- disk/bitesize?: histogram summary of disk I/O size.
Using eBPF:
- As a preview of things to come, see the bcc tracing Tools section. These use bcc, a front end for using eBPF. bcc+eBPF will allow some of these tools to be rewritten and improved, and additional tools to be created.
