pybootchartgui: support reading reduced /proc logs
Pre-processing /proc data during the build considerably reduces the amount of data written to disk: 176KB instead of 4.7MB for a 20 minuted build. Parsing also becomes faster. buildstats.bbclass only writes the reduced logs now, but support for the full /proc files is kept around as reference. (From OE-Core rev: b5e47df9af1ebbb477074587fdeae17eb2f55582) Signed-off-by: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -442,6 +442,12 @@ def _parse_proc_stat_log(file):
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# skip the rest of statistics lines
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return samples
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def _parse_reduced_log(file, sample_class):
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samples = []
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for time, lines in _parse_timed_blocks(file):
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samples.append(sample_class(time, *[float(x) for x in lines[0].split()]))
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return samples
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def _parse_proc_disk_stat_log(file):
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"""
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Parse file for disk stats, but only look at the whole device, eg. sda,
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@ -483,6 +489,25 @@ def _parse_proc_disk_stat_log(file):
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return disk_stats
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def _parse_reduced_proc_meminfo_log(file):
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"""
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Parse file for global memory statistics with
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'MemTotal', 'MemFree', 'Buffers', 'Cached', 'SwapTotal', 'SwapFree' values
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(in that order) directly stored on one line.
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"""
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used_values = ('MemTotal', 'MemFree', 'Buffers', 'Cached', 'SwapTotal', 'SwapFree',)
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mem_stats = []
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for time, lines in _parse_timed_blocks(file):
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sample = MemSample(time)
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for name, value in zip(used_values, lines[0].split()):
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sample.add_value(name, int(value))
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if sample.valid():
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mem_stats.append(DrawMemSample(sample))
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return mem_stats
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def _parse_proc_meminfo_log(file):
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"""
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Parse file for global memory statistics.
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@ -702,10 +727,16 @@ def _do_parse(writer, state, filename, file):
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name = os.path.basename(filename)
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if name == "proc_diskstats.log":
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state.disk_stats = _parse_proc_disk_stat_log(file)
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elif name == "reduced_proc_diskstats.log":
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state.disk_stats = _parse_reduced_log(file, DiskSample)
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elif name == "proc_stat.log":
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state.cpu_stats = _parse_proc_stat_log(file)
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elif name == "reduced_proc_stat.log":
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state.cpu_stats = _parse_reduced_log(file, CPUSample)
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elif name == "proc_meminfo.log":
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state.mem_stats = _parse_proc_meminfo_log(file)
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elif name == "reduced_proc_meminfo.log":
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state.mem_stats = _parse_reduced_proc_meminfo_log(file)
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elif name == "cmdline2.log":
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state.cmdline = _parse_cmdline_log(writer, file)
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elif name == "monitor_disk.log":
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