notes

The Staged Event-Driven Architecture (SEDA) is a new design for building scalable Internet services.

COMMANDS FOR TUNING CONTROLLER:

  # Run with ClientStage.REPORT_SAMPLES=100

  sandstorm exp-cpu-tp.cfg rate=256 mu=32 num_msgs=10000 global.rtController.targetResponseTime=100.0 2>&1 | tee LOG
  grep '^RT:.*90th' LOG > F
  grep 'est ' LOG > F2
  cp F F2 ~/public_html/private/

  # wget these files on samadhi

  gnuplot

  # Look at 90th RT over time
  plot "F" u 7 w lp

  # Look at mu and estimated 90th RT
  plot "F2" u 6 w lp, "F2" u 8 w lp

  # Scatterplot of mu versus 90th RT
  plot "F2" u 8:6 w p

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LOOK AT:

LOG.lambda256.mu128.rt100
LOG.lambda256.mu128.rt50

 sandstorm exp-cpu-sched-rtcon.cfg rate=256 num_msgs=200000 global.rtController.targetResponseTime=50.0 2>&1 | tee LOG

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COMMANDS FOR TUNING MULTICLASS CONTROLLER:

sandstorm exp-cpu-multiclass-rtcon.cfg rate=500.0 num_msgs=100000 2>&1 | tee LOG

grep 'class 0:' LOG > c0
grep 'class 1:' LOG > c1
grep 'class 2:' LOG > c2
grep 'REJRT0' LOG > r0
grep 'REJRT1' LOG > r1
grep 'REJRT2' LOG > r2
grep '^RT0:' LOG > rt0
grep '^RT1:' LOG > rt1
grep '^RT2:' LOG > rt2

gnuplot

# Plot controller measured 90thRT for each class
plot "c0" u 6 w lp, "c1" u 6 w lp, "c2" u 6 w lp

# Plot controller induced rate for each class
plot "c0" u 11 w lp, "c1" u 11 w lp, "c2" u 11 w lp

# Plot client measured 90thRT for each class
plot "r0" u 7 w lp, "r1" u 7 w lp, "r2" u 7 w lp

# Plot client measured reject rate for each class
plot "r0" u 9 w lp, "r1" u 9 w lp, "r2" u 9 w lp

# Plot client measured delay bound violation rate for each class
plot "r0" u 11 w lp, "r1" u 11 w lp, "r2" u 11 w lp

# Compute average reject rate for each class
stats.pl -f r0 9
stats.pl -f r1 9
stats.pl -f r2 9

# Compute average delay bound for class 2
stats.pl -f r2 11