Filename: //sbin/xfsdist.bt

#!/usr/bin/env bpftrace /* * xfsdist Summarize XFS operation latency. * For Linux, uses bpftrace and eBPF. * * This traces four common file system calls: read, write, open, and fsync. * It can be customized to trace more if desired. * * USAGE: xfsdist.bt * * This is a bpftrace version of the bcc tool of the same name. * * Copyright 2018 Netflix, Inc. * Licensed under the Apache License, Version 2.0 (the "License") * * 08-Sep-2018 Brendan Gregg Created this. */ BEGIN { printf("Tracing XFS operation latency... Hit Ctrl-C to end.\n"); } kprobe:xfs_file_read_iter, kprobe:xfs_file_write_iter, kprobe:xfs_file_open, kprobe:xfs_file_fsync { @start[tid] = nsecs; @name[tid] = func; } kretprobe:xfs_file_read_iter, kretprobe:xfs_file_write_iter, kretprobe:xfs_file_open, kretprobe:xfs_file_fsync /@start[tid]/ { @us[@name[tid]] = hist((nsecs - @start[tid]) / 1000); delete(@start[tid]); delete(@name[tid]); } END { clear(@start); clear(@name); }

./Ninja\.