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authorPatrick Ohly <patrick.ohly@intel.com>2016-11-30 10:50:11 +0100
committerRichard Purdie <richard.purdie@linuxfoundation.org>2016-12-07 10:36:11 +0000
commitb5e47df9af1ebbb477074587fdeae17eb2f55582 (patch)
treee4c9f2084da5cbe17a0e5cfa1436b4d2365492d3 /scripts
parentb17812385cd55e81066d3ceda92dffdc6e5564da (diff)
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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. Signed-off-by: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/pybootchartgui/pybootchartgui/parsing.py31
1 files changed, 31 insertions, 0 deletions
diff --git a/scripts/pybootchartgui/pybootchartgui/parsing.py b/scripts/pybootchartgui/pybootchartgui/parsing.py
index 1c8d8efed7..bcfb2da569 100644
--- a/scripts/pybootchartgui/pybootchartgui/parsing.py
+++ b/scripts/pybootchartgui/pybootchartgui/parsing.py
@@ -442,6 +442,12 @@ def _parse_proc_stat_log(file):
# skip the rest of statistics lines
return samples
+def _parse_reduced_log(file, sample_class):
+ samples = []
+ for time, lines in _parse_timed_blocks(file):
+ samples.append(sample_class(time, *[float(x) for x in lines[0].split()]))
+ return samples
+
def _parse_proc_disk_stat_log(file):
"""
Parse file for disk stats, but only look at the whole device, eg. sda,
@@ -483,6 +489,25 @@ def _parse_proc_disk_stat_log(file):
return disk_stats
+def _parse_reduced_proc_meminfo_log(file):
+ """
+ Parse file for global memory statistics with
+ 'MemTotal', 'MemFree', 'Buffers', 'Cached', 'SwapTotal', 'SwapFree' values
+ (in that order) directly stored on one line.
+ """
+ used_values = ('MemTotal', 'MemFree', 'Buffers', 'Cached', 'SwapTotal', 'SwapFree',)
+
+ mem_stats = []
+ for time, lines in _parse_timed_blocks(file):
+ sample = MemSample(time)
+ for name, value in zip(used_values, lines[0].split()):
+ sample.add_value(name, int(value))
+
+ if sample.valid():
+ mem_stats.append(DrawMemSample(sample))
+
+ return mem_stats
+
def _parse_proc_meminfo_log(file):
"""
Parse file for global memory statistics.
@@ -702,10 +727,16 @@ def _do_parse(writer, state, filename, file):
name = os.path.basename(filename)
if name == "proc_diskstats.log":
state.disk_stats = _parse_proc_disk_stat_log(file)
+ elif name == "reduced_proc_diskstats.log":
+ state.disk_stats = _parse_reduced_log(file, DiskSample)
elif name == "proc_stat.log":
state.cpu_stats = _parse_proc_stat_log(file)
+ elif name == "reduced_proc_stat.log":
+ state.cpu_stats = _parse_reduced_log(file, CPUSample)
elif name == "proc_meminfo.log":
state.mem_stats = _parse_proc_meminfo_log(file)
+ elif name == "reduced_proc_meminfo.log":
+ state.mem_stats = _parse_reduced_proc_meminfo_log(file)
elif name == "cmdline2.log":
state.cmdline = _parse_cmdline_log(writer, file)
elif name == "monitor_disk.log":