stat(1) states(1) stdbuf(1) stdpods(1) stop(1) strchg(1) strconf(1) stream(1) strings(1) strings(1g) strip(1) stty(1) stty(1B) stty(1g) sum(1) sum(1B) sum(1g) sun(1) suspend(1) svcio(1) svcprop(1) svcs(1) svn(1) svnadmin(1) svndumpfilter(1) svnlook(1) svn...
用perf script解析perf.data: perf script -i perf.data > perf.unfold 用FlameGraph折叠符号:./FlameGraph/stackcollapse-perf.pl perf.unfold > perf.folded 生成向量图(svg图): ./FlameGraph/flamegraph.pl perf.folded > perf.svg 用Firefox或chome浏览器打开图片即可 查找代码性能缺陷 sudo perf stat branch...
SEEALSO perf-stat(1),perf-annotate(1)
Rerun the code under control of the benchmarking or profiling modules, from the first step perl v5.12.5 Last change: 2012-11-03 1 Perl Programmers Reference Guide PERLPERF(1) above, and check that the new code executed the same task in less time. Save your work and repeat... GENERAL ...
Enable hybrid event with a specific pmu To enable a core only event or atom only event, following syntax is supported: cpu_core/<event name>/ or cpu_atom/<event name>/ For example, count thecyclesevent on core cpus. perf stat -e cpu_core/cycles/ Create two events for one hardware ...
使用perf_events: misc/perf-stat-hist: 聚合某个追踪点的变量.Examples. syscount: 使用系统调用来统计系统调用.Examples. disk/bitesize: 柱状图显示磁盘IO数量.Examples. 使用eBPF: 未来功能的预览,参考bcc工具的章节Tools section. These usebcc, a front end for usingeBPF. bcc+eBPF will allow some of the...
System altered --使用statspack收集统计信息时建议将该值设置为TRUE,否则收集的统计信息大约只能起到10%的作用 SQL> @C:/oracle/ora92/rdbms/admin/spcreate.sql; 输入perfstat_password的值: perfstat 输入default_tablespace的值: perfstat 输入temporary_tablespace的值: temp ...
config = { stack_mode=perf; max_map_keys=2 } BEGIN { ... } uprobe:./testprogs/uprobe_test:uprobeFunction1 { ... } The names of the config variables can be in the format of environment variables or their lowercase equivalent without the BPFTRACE_ prefix. For example, BPFTRACE_STACK...
the pattern is treated as a shell glob suitable for consumption by fnmatch(3) with the FNM_PATHNAME flag: wildcards in the pattern will not match a/in the pathname. For example,Documentation/*.htmlmatchesDocumentation/git.htmlbut notDocumentation/ppc/ppc.htmlortools/perf/Documentation/perf.html...
These are the pre-defined software events provided by the Linux kernel, as commonly traced via the perf utility. They are similar to tracepoints, but there is only about a dozen of these, and they are documented in the perf_event_open(2) man page. If the count is not provided, a def...