Edit File: scallslower.lua
--[[ Copyright (C) 2013-2018 Draios Inc dba Sysdig. This file is part of sysdig. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --]] --[[ scallslower.lua - trace the syscalls slower than a given threshold. USAGE: sysdig -c scallslower min_ms eg, sysdig -c scallslower 1000 # show syscalls slower than 1000 ms. sysdig -c scallslower "1 disable_colors" # show syscalls slower than 1 ms. w/ no colors sysdig -pc -c scallslower 1000 # show syscalls slower than 1000 ms and container output --]] -- Chisel description description = "Trace syscalls slower than a threshold milliseconds. This chisel is compatible with containers using the sysdig -pc or -pcontainer argument, otherwise no container information will be shown. (Blue represents a process running within a container, and Green represents a host process)"; short_description = "Trace slow syscalls"; category = "Performance"; -- Chisel argument list args = { { name = "min_ms", description = "Minimum milliseconds before which a syscall should complete", argtype = "int", optional = false }, { name = "disable_color", description = "Set to 'disable_colors' if you want to disable color output", argtype = "string", optional = true }, } require "common" terminal = require "ansiterminal" terminal.enable_color(true) -- Argument notification callback function on_set_arg(name, val) if name == "disable_color" and val == "disable_color" then terminal.enable_color(false) elseif name == "min_ms" then min_ms = parse_numeric_input(val, name) end return true end -- Initialization callback function on_init() -- set the following fields on_event() etype = chisel.request_field("evt.type") dir = chisel.request_field("evt.dir") datetime = chisel.request_field("evt.datetime") pname = chisel.request_field("proc.name") latency = chisel.request_field("evt.latency") fcontainername = chisel.request_field("container.name") fcontainerid = chisel.request_field("container.id") -- The -pc or -pcontainer options was supplied on the cmd line print_container = sysdig.is_print_container_data() -- The -pc or -pcontainer options was supplied on the cmd line if print_container then print(string.format("%-23.23s %-20.20s %-20.20s %-23.23s %-20s %s", "evt.datetime", "container.id", "container.name", "proc.name", "LATENCY(ms)", "evt.type")) print(string.format("%-23.23s %-20.20s %-20.20s %-23.23s %-20s %s", "-----------------------", "--------------------", "--------------------", "-----------------------", "--------------------", "--------------------")) else print(string.format("%-23.23s %-23.23s %-20s %s", "evt.datetime", "proc.name", "LATENCY(ms)", "evt.type")) print(string.format("%-23.23s %-23.23s %-20s %s", "-----------------------", "-----------------------", "--------------------", "--------------------")) end return true end -- Event callback function on_event() local color = terminal.green lat = evt.field(latency) if lat == nil then return end lat = lat / 1000000 if lat > min_ms then if evt.field(fcontainername) ~= "host" then color = terminal.blue end -- The -pc or -pcontainer options was supplied on the cmd line if print_container then print(color .. string.format("%-23.23s %-20.20s %-20.20s %-23.23s %-20s %s", evt.field(datetime), evt.field(fcontainerid), evt.field(fcontainername), evt.field(pname), lat, evt.field(etype))) else print(color .. string.format("%-23.23s %-23.23s %-20s %s", evt.field(datetime), evt.field(pname), lat, evt.field(etype))) end end end