| # osmo_gsm_tester: specifics for running stress(-ng), a tool to load and stress a computer system |
| # |
| # Copyright (C) 2020 by sysmocom - s.f.m.c. GmbH |
| # |
| # Author: Pau Espin Pedrol <pespin@sysmocom.de> |
| # |
| # This program is free software: you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation, either version 3 of the |
| # License, or (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| from ..core import log |
| from ..core import util |
| from ..core import process |
| from ..core import remote |
| |
| class StressTool(log.Origin): |
| |
| STRESS_BIN = 'stress' |
| |
| ############## |
| # PROTECTED |
| ############## |
| def __init__(self, testenv, run_node): |
| super().__init__(log.C_RUN, StressTool.STRESS_BIN) |
| self.testenv = testenv |
| self._run_node = run_node |
| self.proc = None |
| self.rem_host = None |
| |
| def runs_locally(self): |
| locally = not self._run_node or self._run_node.is_local() |
| return locally |
| |
| ################### |
| # PUBLIC (test API included) |
| ################### |
| def start(self, cpu_workers=0, mem_workers=0, io_workers=0, timeout=0): |
| self.run_dir = util.Dir(self.testenv.test().get_run_dir().new_dir(self.name())) |
| |
| popen_args = (StressTool.STRESS_BIN,) |
| if cpu_workers > 0: |
| popen_args += ('-c', str(cpu_workers)) |
| if mem_workers > 0: |
| popen_args += ('-m', str(mem_workers)) |
| if io_workers > 0: |
| popen_args += ('-i', str(io_workers)) |
| if timeout > 0: |
| popen_args += ('-t', str(timeout)) |
| |
| if self.runs_locally(): |
| self.proc = process.Process(self.name(), self.run_dir, popen_args, env={}) |
| else: |
| self.rem_host = remote.RemoteHost(self.run_dir, self._run_node.ssh_user(), self._run_node.ssh_addr()) |
| self.proc = self.rem_host.RemoteProcess(self.name(), popen_args, env={}) |
| # Warning: Be aware that if process ends before test is finished due to |
| # "-t timeout" param being set, the test will most probably fail as |
| # detected 'early exit' by the testenv. |
| self.testenv.remember_to_stop(self.proc) |
| self.proc.launch() |
| |
| def stop(self): |
| self.testenv.stop_process(self.proc) |
| |
| # vim: expandtab tabstop=4 shiftwidth=4 |