| # Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from UserDict import UserDict |
| |
| class fio_parser_exception(Exception): |
| """ |
| Exception class for fio_job_output. |
| |
| """ |
| |
| def __init__(self, value): |
| self.value = value |
| def __str__(self): |
| return repr(self.value) |
| |
| |
| def fio_version(version_line): |
| """ |
| Strip 'fio-' prefix from self-reported version |
| |
| @param version_line: first line of fio output should be version. |
| |
| @raises fio_parser_exception when prefix isn't "fio-" as expected. |
| |
| """ |
| |
| if version_line[0:4] == "fio-": |
| return version_line[4:] |
| raise fio_parser_exception('fio version not found: %s' % version_line) |
| |
| |
| class fio_job_output(UserDict): |
| """ |
| Dictionary class to hold the fio output. |
| |
| This class accepts fio output as a list of values. |
| |
| """ |
| |
| def _parse_gen(self, job, field, val): |
| """ |
| Parses a regular field and adds it to the dictionary. |
| |
| @param job: fio job name. |
| @param field: fio output field name. |
| @param val: fio output field value. |
| |
| """ |
| |
| self[field % job] = val |
| |
| |
| def _parse_percentile(self, job, field, val): |
| """ |
| Parses a percentile field and adds it to the dictionary. |
| |
| @param job: fio job name. |
| @param field: fio output field name. |
| @param val: fio output field value. |
| |
| """ |
| |
| prc = float(val.split('=')[0].strip('%')) |
| self[field % (job, prc)] = val.split('=')[1] |
| |
| |
| def _append_stats(self, idxs, io, typ): |
| """ |
| Appends repetitive statistics fields to self._fio_table. |
| |
| @param idxs: range of field indexes to use for the map. |
| @param io: I/O type: rd or wr |
| @param typ: latency type: submission or completion. |
| |
| """ |
| |
| fields = ['_%s_' + '%s_min_%s_lat_usec' % (io, typ), |
| '_%s_' + '%s_max_%s_lat_usec' % (io, typ), |
| '_%s_' + '%s_mean_%s_lat_usec' % (io, typ), |
| '_%s_' + '%s_stdv_%s_lat_usec' % (io, typ)] |
| for field, idx in zip(fields, idxs): |
| self._fio_table.append((field, idx, self._parse_gen)) |
| |
| |
| def _append_percentiles(self, idxs, io): |
| """ |
| Appends repetitive percentile fields to self._fio_table. |
| |
| @param idxs: range of field indexes to use for the map. |
| @param io: I/O type: rd or wr |
| |
| """ |
| |
| for i in idxs: |
| field = '_%s_' + '%s_lat_' % io + '%.2f_percent_usec' |
| self._fio_table.append((field, i, self._parse_percentile)) |
| |
| |
| def _build_fio_terse_4_table(self): |
| """ |
| Creates map from field name to fio output index and parse function. |
| |
| """ |
| |
| # General fio Job Info: |
| self._fio_table.extend([ |
| ('_%s_fio_version' , 1, self._parse_gen), |
| ('_%s_groupid' , 3, self._parse_gen), |
| ('_%s_error' , 4, self._parse_gen)]) |
| |
| # Results of READ Status: |
| self._fio_table.extend([ |
| ('_%s_rd_total_io_KB' , 5, self._parse_gen), |
| ('_%s_rd_bw_KB_sec' , 6, self._parse_gen), |
| ('_%s_rd_IOPS' , 7, self._parse_gen), |
| ('_%s_rd_runtime_msec' , 8, self._parse_gen)]) |
| self._append_stats(range(9, 13), 'rd', 'submitted') |
| self._append_stats(range(13, 17), 'rd', 'completed') |
| self._append_percentiles(range(17, 37), 'rd') |
| self._append_stats(range(37, 41), 'rd', 'total') |
| self._fio_table.extend([ |
| ('_%s_rd_min_bw_KB_sec' , 41, self._parse_gen), |
| ('_%s_rd_max_bw_KB_sec' , 42, self._parse_gen), |
| ('_%s_rd_percent' , 43, self._parse_gen), |
| ('_%s_rd_mean_bw_KB_sec' , 44, self._parse_gen), |
| ('_%s_rd_stdev_bw_KB_sec' , 45, self._parse_gen)]) |
| |
| # Results of WRITE Status: |
| self._fio_table.extend([ |
| ('_%s_wr_total_io_KB' , 46, self._parse_gen), |
| ('_%s_wr_bw_KB_sec' , 47, self._parse_gen), |
| ('_%s_wr_IOPS' , 48, self._parse_gen), |
| ('_%s_wr_runtime_msec' , 49, self._parse_gen)]) |
| self._append_stats(range(50, 54), 'wr', 'submitted') |
| self._append_stats(range(54, 58), 'wr', 'completed') |
| self._append_percentiles(range(58, 78), 'wr') |
| self._append_stats(range(78, 82), 'wr', 'total') |
| self._fio_table.extend([ |
| ('_%s_wr_min_bw_KB_sec' , 82, self._parse_gen), |
| ('_%s_wr_max_bw_KB_sec' , 83, self._parse_gen), |
| ('_%s_wr_percent' , 84, self._parse_gen), |
| ('_%s_wr_mean_bw_KB_sec' , 85, self._parse_gen), |
| ('_%s_wr_stdv_bw_KB_sec' , 86, self._parse_gen)]) |
| |
| # Results of TRIM Status: |
| self._fio_table.extend([ |
| ('_%s_tr_total_io_KB' , 87, self._parse_gen), |
| ('_%s_tr_bw_KB_sec' , 88, self._parse_gen), |
| ('_%s_tr_IOPS' , 89, self._parse_gen), |
| ('_%s_tr_runtime_msec' , 90, self._parse_gen)]) |
| self._append_stats(range(91, 95), 'tr', 'submitted') |
| self._append_stats(range(95, 99), 'tr', 'completed') |
| self._append_percentiles(range(99, 119), 'tr') |
| self._append_stats(range(119, 123), 'tr', 'total') |
| self._fio_table.extend([ |
| ('_%s_tr_min_bw_KB_sec' , 123, self._parse_gen), |
| ('_%s_tr_max_bw_KB_sec' , 124, self._parse_gen), |
| ('_%s_tr_percent' , 125, self._parse_gen), |
| ('_%s_tr_mean_bw_KB_sec' , 126, self._parse_gen), |
| ('_%s_tr_stdv_bw_KB_sec' , 127, self._parse_gen)]) |
| |
| # Other Results: |
| self._fio_table.extend([ |
| ('_%s_cpu_usg_usr_percent' , 128, self._parse_gen), |
| ('_%s_cpu_usg_sys_percent' , 129, self._parse_gen), |
| ('_%s_cpu_context_count' , 130, self._parse_gen), |
| ('_%s_major_page_faults' , 131, self._parse_gen), |
| ('_%s_minor_page_faults' , 132, self._parse_gen), |
| ('_%s_io_depth_le_1_percent' , 133, self._parse_gen), |
| ('_%s_io_depth_2_percent' , 134, self._parse_gen), |
| ('_%s_io_depth_4_percent' , 135, self._parse_gen), |
| ('_%s_io_depth_8_percent' , 136, self._parse_gen), |
| ('_%s_io_depth_16_percent' , 137, self._parse_gen), |
| ('_%s_io_depth_32_percent' , 138, self._parse_gen), |
| ('_%s_io_depth_ge_64_percent' , 139, self._parse_gen), |
| ('_%s_io_lats_le_2_usec_percent' , 140, self._parse_gen), |
| ('_%s_io_lats_4_usec_percent' , 141, self._parse_gen), |
| ('_%s_io_lats_10_usec_percent' , 142, self._parse_gen), |
| ('_%s_io_lats_20_usec_percent' , 143, self._parse_gen), |
| ('_%s_io_lats_50_usec_percent' , 144, self._parse_gen), |
| ('_%s_io_lats_100_usec_percent' , 145, self._parse_gen), |
| ('_%s_io_lats_250_usec_percent' , 146, self._parse_gen), |
| ('_%s_io_lats_500_usec_percent' , 147, self._parse_gen), |
| ('_%s_io_lats_750_usec_percent' , 148, self._parse_gen), |
| ('_%s_io_lats_1000_usec_percent' , 149, self._parse_gen), |
| ('_%s_io_lats_le_2_msec_percent' , 150, self._parse_gen), |
| ('_%s_io_lats_4_msec_percent' , 151, self._parse_gen), |
| ('_%s_io_lats_10_msec_percent' , 152, self._parse_gen), |
| ('_%s_io_lats_20_msec_percent' , 153, self._parse_gen), |
| ('_%s_io_lats_50_msec_percent' , 154, self._parse_gen), |
| ('_%s_io_lats_100_msec_percent' , 155, self._parse_gen), |
| ('_%s_io_lats_250_msec_percent' , 156, self._parse_gen), |
| ('_%s_io_lats_500_msec_percent' , 157, self._parse_gen), |
| ('_%s_io_lats_750_msec_percent' , 158, self._parse_gen), |
| ('_%s_io_lats_1000_msec_percent' , 159, self._parse_gen), |
| ('_%s_io_lats_2000_msec_percent' , 160, self._parse_gen), |
| ('_%s_io_lats_gt_2000_msec_percent' , 161, self._parse_gen), |
| |
| # Disk Utilization: only boot disk is tested |
| ('_%s_disk_name' , 162, self._parse_gen), |
| ('_%s_rd_ios' , 163, self._parse_gen), |
| ('_%s_wr_ios' , 164, self._parse_gen), |
| ('_%s_rd_merges' , 165, self._parse_gen), |
| ('_%s_wr_merges' , 166, self._parse_gen), |
| ('_%s_rd_ticks' , 167, self._parse_gen), |
| ('_%s_wr_ticks' , 168, self._parse_gen), |
| ('_%s_time_in_queue' , 169, self._parse_gen), |
| ('_%s_disk_util_percent' , 170, self._parse_gen)]) |
| |
| |
| def __init__(self, data): |
| """ |
| Fills the dictionary object with the fio output upon instantiation. |
| |
| @param data: fio HOWTO documents list of values from fio output. |
| |
| @raises fio_parser_exception. |
| |
| """ |
| |
| UserDict.__init__(self) |
| |
| # Check that data parameter. |
| if len(data) == 0: |
| raise fio_parser_exception('No fio output supplied.') |
| |
| # Create table that relates field name to fio output index and |
| # parsing function to be used for the field. |
| self._fio_table = [] |
| terse_version = int(data[0]) |
| fio_terse_parser = { 4 : self._build_fio_terse_4_table } |
| |
| if terse_version in fio_terse_parser: |
| fio_terse_parser[terse_version]() |
| else: |
| raise fio_parser_exception('fio terse version %s unsupported.' |
| 'fio_parser supports terse version %s' % |
| (terse_version, fio_terse_parser.keys())) |
| |
| # Fill dictionary object. |
| self._job_name = data[2] |
| for field, idx, parser in self._fio_table: |
| # Field 162-170 only reported when we test on block device. |
| if len(data) <= idx: |
| break |
| parser(self._job_name, field, data[idx]) |
