Prev: [GIT PULL] instrumentation updates
Next: [PATCH 11/12] perf, sched migration: Librarize task states and event headers helpers
From: Frederic Weisbecker on 1 Aug 2010 20:20
From: Nikhil Rao <ncrao(a)google.com>

Without vertical zoom, it is not possible to see all CPUs in a trace
taken on a larger machine. This patch parameterizes the height and
spacing of CPUs so that you can fit more cpus into the screen.

Ideally we should dynamically size/space the CPU rectangles with some
minimum threshold. Until then, this patch is a stop-gap.

Signed-off-by: Nikhil Rao <ncrao(a)google.com>
Cc: Ingo Molnar <mingo(a)elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra(a)chello.nl>
Cc: Arnaldo Carvalho de Melo <acme(a)redhat.com>
Cc: Paul Mackerras <paulus(a)samba.org>
Cc: Tom Zanussi <tzanussi(a)gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec(a)gmail.com>
---
tools/perf/scripts/python/sched-migration.py | 23 ++++++++++++++---------
1 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/tools/perf/scripts/python/sched-migration.py b/tools/perf/scripts/python/sched-migration.py
index 8b8fb7c..d902668 100644
--- a/tools/perf/scripts/python/sched-migration.py
+++ b/tools/perf/scripts/python/sched-migration.py
@@ -27,6 +27,11 @@ from perf_trace_context import *
from Core import *

class RootFrame(wx.Frame):
+ Y_OFFSET = 100
+ CPU_HEIGHT = 100
+ CPU_SPACE = 50
+ EVENT_MARKING_WIDTH = 5
+
def __init__(self, timeslices, parent = None, id = -1, title = "Migration"):
wx.Frame.__init__(self, parent, id, title)

@@ -97,8 +102,8 @@ class RootFrame(wx.Frame):
if width_px == 0:
return

- offset_py = 100 + (cpu * 150)
- width_py = 100
+ offset_py = RootFrame.Y_OFFSET + (cpu * (RootFrame.CPU_HEIGHT + RootFrame.CPU_SPACE))
+ width_py = RootFrame.CPU_HEIGHT

if cpu in slice.event_cpus:
rgb = rq.event.color()
@@ -107,9 +112,9 @@ class RootFrame(wx.Frame):
color = wx.Colour(r, g, b)
brush = wx.Brush(color, wx.SOLID)
dc.SetBrush(brush)
- dc.DrawRectangle(offset_px, offset_py, width_px, 5)
- width_py -= 5
- offset_py += 5
+ dc.DrawRectangle(offset_px, offset_py, width_px, RootFrame.EVENT_MARKING_WIDTH)
+ width_py -= RootFrame.EVENT_MARKING_WIDTH
+ offset_py += RootFrame.EVENT_MARKING_WIDTH

red_power = int(0xff - (0xff * load_rate))
color = wx.Colour(0xff, red_power, red_power)
@@ -154,11 +159,11 @@ class RootFrame(wx.Frame):
self.update_rectangles(dc, start, end)

def cpu_from_ypixel(self, y):
- y -= 100
- cpu = y / 150
- height = y % 150
+ y -= RootFrame.Y_OFFSET
+ cpu = y / (RootFrame.CPU_HEIGHT + RootFrame.CPU_SPACE)
+ height = y % (RootFrame.CPU_HEIGHT + RootFrame.CPU_SPACE)

- if cpu < 0 or cpu > self.max_cpu or height > 100:
+ if cpu < 0 or cpu > self.max_cpu or height > RootFrame.CPU_HEIGHT:
return -1

return cpu
--
1.6.2.3

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Prev: [GIT PULL] instrumentation updates
Next: [PATCH 11/12] perf, sched migration: Librarize task states and event headers helpers