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graphstats: Display host buffer stats in graph 

Prune host buffer stats near the start and end of the print.  Graph
the remaining buffer stats.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-02-01 11:21:01 -05:00
parent 5beceaae5c
commit 4194ebf9df
1 changed files with 24 additions and 2 deletions
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26
scripts/graphstats.py
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@ -27,10 +27,32 @@ def parse_log(logname):
f.close() f.close()
return out return out
def find_print_restarts(data):
last_print_time = 0.
print_resets = []
for d in data:
print_time = float(d.get('print_time', last_print_time))
if print_time < last_print_time:
print_resets.append(d['#sampletime'])
last_print_time = 0.
else:
last_print_time = print_time
sample_resets = {}
for d in data:
st = d['#sampletime']
while print_resets and st > print_resets[0]:
print_resets.pop(0)
if not print_resets:
break
if st + 2. * MAXBUFFER > print_resets[0]:
sample_resets[st] = 1
return sample_resets
def plot_mcu(data, maxbw, outname): def plot_mcu(data, maxbw, outname):
# Generate data for plot # Generate data for plot
basetime = lasttime = data[0]['#sampletime'] basetime = lasttime = data[0]['#sampletime']
lastbw = float(data[0]['bytes_write']) + float(data[0]['bytes_retransmit']) lastbw = float(data[0]['bytes_write']) + float(data[0]['bytes_retransmit'])
sample_resets = find_print_restarts(data)
times = [] times = []
bwdeltas = [] bwdeltas = []
loads = [] loads = []
@ -49,7 +71,7 @@ def plot_mcu(data, maxbw, outname):
load = 0. load = 0.
pt = float(d['print_time']) pt = float(d['print_time'])
hb = float(d['buffer_time']) hb = float(d['buffer_time'])
if pt <= 2*MAXBUFFER or hb >= MAXBUFFER: if pt <= 2. * MAXBUFFER or hb >= MAXBUFFER or st in sample_resets:
hb = 0. hb = 0.
else: else:
hb = 100. * (MAXBUFFER - hb) / MAXBUFFER hb = 100. * (MAXBUFFER - hb) / MAXBUFFER
@ -67,7 +89,7 @@ def plot_mcu(data, maxbw, outname):
ax1.set_ylabel('Usage (%)') ax1.set_ylabel('Usage (%)')
ax1.plot_date(times, bwdeltas, 'g', label='Bandwidth') ax1.plot_date(times, bwdeltas, 'g', label='Bandwidth')
ax1.plot_date(times, loads, 'r', label='MCU load') ax1.plot_date(times, loads, 'r', label='MCU load')
#ax1.plot_date(times, hostbuffers, 'c', label='Host buffer') ax1.plot_date(times, hostbuffers, 'c', label='Host buffer')
ax1.legend() ax1.legend()
ax1.xaxis.set_major_formatter(mdates.DateFormatter('%H:%M')) ax1.xaxis.set_major_formatter(mdates.DateFormatter('%H:%M'))
#plt.gcf().autofmt_xdate() #plt.gcf().autofmt_xdate()