[OE-core] [PATCH 1/1] buildstats.bbclass: Adding disk io measurement
Beth Flanagan
elizabeth.flanagan at intel.com
Thu Aug 4 18:24:37 UTC 2011
This commit adds disk-io statistics functionality on a build
and per-task basis.
It pulls measurements for whatever partition TMPDIR exists on.
This data could be off if SSTATE_DIR and DL_DIR exist on
a different partition/volume.
Notes on what this pulls:
ReadsComp: Total number of reads complete
ReadsMerged: Total number of adjacent reads merged
SectRead: Total number of sectors read
TimeReads: Total number of m/s spent reading
WritesComp: Total number of writes completed
SectWrite: Total number of sectors written
TimeWrite: Total number of m/s spent writing
IOinProgress: Total amount of IO in progress at the time of
we look at /proc/diskstats.
TimeIO: Total number of m/s spent doing IO
WTimeIO: Weighted time doing I/O. From iostats.txt:
"This field is incremented at each I/O start, I/O completion, I/O
merge, or read of these stats by the number of I/Os in progress
(field 9) times the number of milliseconds spent doing I/O since the
last update of this field. This can provide an easy measure of both
I/O completion time and the backlog that may be accumulating."
Signed-off-by: Beth Flanagan <elizabeth.flanagan at intel.com>
---
meta/classes/buildstats.bbclass | 221 +++++++++++++++++++++++++--------------
1 files changed, 142 insertions(+), 79 deletions(-)
diff --git a/meta/classes/buildstats.bbclass b/meta/classes/buildstats.bbclass
index 8077035..3319f68 100644
--- a/meta/classes/buildstats.bbclass
+++ b/meta/classes/buildstats.bbclass
@@ -1,5 +1,6 @@
BUILDSTATS_BASE = ${TMPDIR}/buildstats/
BNFILE = ${BUILDSTATS_BASE}/.buildname
+DEVFILE = ${BUILDSTATS_BASE}/.device
################################################################################
# Build statistics gathering.
@@ -19,9 +20,79 @@ def get_cputime():
fields = open("/proc/stat", "r").readline().rstrip().split()[1:]
return sum(int(field) for field in fields)
+def set_bn(e):
+ bn = e.getPkgs()[0] + "-" + bb.data.getVar('MACHINE',e.data, True)
+ try:
+ os.remove(bb.data.getVar('BNFILE', e.data, True))
+ except:
+ pass
+ file = open(bb.data.getVar('BNFILE', e.data, True), "w")
+ file.write(os.path.join(bn, bb.data.getVar('BUILDNAME', e.data, True)))
+ file.close()
+
+def get_bn(e):
+ file = open(bb.data.getVar('BNFILE', e.data, True))
+ bn = file.readline()
+ file.close()
+ return bn
+
+def set_device(e):
+ tmpdir = bb.data.getVar('TMPDIR', e.data, True)
+ try:
+ os.remove(bb.data.getVar('DEVFILE', e.data, True))
+ except:
+ pass
+ ############################################################################
+ # We look for the volume TMPDIR lives on. To do all disks would make little
+ # sense and not give us any particularly useful data. In theory we could do
+ # something like stick DL_DIR on a different partition and this would
+ # throw stats gathering off. The same goes with SSTATE_DIR. However, let's
+ # get the basics in here and work on the cornercases later.
+ ############################################################################
+ device=os.stat(tmpdir)
+ majordev=os.major(device.st_dev)
+ minordev=os.minor(device.st_dev)
+ for line in open("/proc/diskstats", "r"):
+ if majordev == int(line.split()[0]) and minordev == int(line.split()[1]):
+ rdev=line.split()[2]
+ file = open(bb.data.getVar('DEVFILE', e.data, True), "w")
+ file.write(rdev)
+ file.close()
+
+def get_device(e):
+ file = open(bb.data.getVar('DEVFILE', e.data, True))
+ device = file.readline()
+ file.close()
+ return device
+
+def get_diskstats(dev):
+ import itertools
+ ############################################################################
+ # For info on what these are, see kernel doc file iostats.txt
+ ############################################################################
+ DSTAT_KEYS = ['ReadsComp', 'ReadsMerged', 'SectRead', 'TimeReads', 'WritesComp', 'SectWrite', 'TimeWrite', 'IOinProgress', 'TimeIO', 'WTimeIO']
+ for x in open("/proc/diskstats", "r"):
+ if dev in x:
+ diskstats_val = x.rstrip().split()[4:]
+ diskstats = dict(itertools.izip(DSTAT_KEYS, diskstats_val))
+ return diskstats
+
+def set_diskdata(var, dev, data):
+ data.setVar(var, get_diskstats(dev))
+
+def get_diskdata(var, dev, data):
+ olddiskdata = data.getVar(var, False)
+ diskdata = {}
+ if olddiskdata is None:
+ return
+ newdiskdata = get_diskstats(dev)
+ for key in olddiskdata.iterkeys():
+ diskdata["Start"+key] = str(int(olddiskdata[key]))
+ diskdata["End"+key] = str(int(newdiskdata[key]))
+ return diskdata
+
def set_timedata(var, data):
import time
-
time = time.time()
cputime = get_cputime()
proctime = get_process_cputime(os.getpid())
@@ -42,26 +113,36 @@ def get_timedata(var, data):
cpuperc = None
return timediff, cpuperc
-##############################################
-# We need to set the buildname to a file since
-# BUILDNAME changes throughout a build
-##############################################
-
-def set_bn(e):
- bn = e.getPkgs()[0] + "-" + bb.data.getVar('MACHINE',e.data, True)
- try:
- os.remove(bb.data.getVar('BNFILE',e.data, True))
- except:
- pass
- file = open(bb.data.getVar('BNFILE',e.data, True), "w")
- file.write(os.path.join(bn, bb.data.getVar('BUILDNAME', e.data, True)))
- file.close()
-
-def get_bn(e):
- file = open(bb.data.getVar('BNFILE',e.data, True))
- bn = file.readline()
+def write_task_data(status, logfile, dev, e):
+ bn = get_bn(e)
+ bsdir = os.path.join(bb.data.getVar('BUILDSTATS_BASE', e.data, True), bn)
+ taskdir = os.path.join(bsdir, bb.data.expand("${PF}", e.data))
+ file = open(os.path.join(logfile), "a")
+ timedata = get_timedata("__timedata_task", e.data)
+ if timedata:
+ elapsedtime, cpu = timedata
+ file.write(bb.data.expand("${PF}: %s: Elapsed time: %0.2f seconds \n" %
+ (e.task, elapsedtime), e.data))
+ if cpu:
+ file.write("CPU usage: %0.1f%% \n" % cpu)
+ ############################################################################
+ # Here we gather up disk data. In an effort to avoid lying with stats
+ # I do a bare minimum of analysis of collected data.
+ # The simple fact is, doing disk io collection on a per process basis
+ # without effecting build time would be difficult.
+ # For the best information, running things with BB_TOTAL_THREADS = "1"
+ # would return accurate per task results.
+ ############################################################################
+ diskdata = get_diskdata("__diskdata_task", dev, e.data)
+ if diskdata:
+ for key in sorted(diskdata.iterkeys()):
+ file.write(key + ": " + diskdata[key] + "\n")
+ if status is "passed":
+ file.write("Status: PASSED \n")
+ else:
+ file.write("Status: FAILED \n")
+ file.write("Ended: %0.2f \n" % time.time())
file.close()
- return bn
python run_buildstats () {
import bb.build
@@ -70,21 +151,25 @@ python run_buildstats () {
import time, subprocess, platform
if isinstance(e, bb.event.BuildStarted):
- ##############################################
+ ########################################################################
# at first pass make the buildstats heriarchy and then
# set the buildname
- ##############################################
+ ########################################################################
try:
bb.mkdirhier(bb.data.getVar('BUILDSTATS_BASE', e.data, True))
except:
pass
set_bn(e)
bn = get_bn(e)
+ set_device(e)
+ device = get_device(e)
+
bsdir = os.path.join(bb.data.getVar('BUILDSTATS_BASE', e.data, True), bn)
try:
bb.mkdirhier(bsdir)
except:
pass
+ set_diskdata("__diskdata_build", device, e.data)
set_timedata("__timedata_build", e.data)
build_time = os.path.join(bsdir, "build_stats")
# write start of build into build_time
@@ -99,27 +184,36 @@ python run_buildstats () {
file.close()
elif isinstance(e, bb.event.BuildCompleted):
- bn=get_bn(e)
- timedata = get_timedata("__timedata_build", e.data)
- if not timedata:
- return
- time, cpu = timedata
+ bn = get_bn(e)
+ dev = get_device(e)
bsdir = os.path.join(bb.data.getVar('BUILDSTATS_BASE', e.data, True), bn)
+ taskdir = os.path.join(bsdir, bb.data.expand("${PF}", e.data))
build_time = os.path.join(bsdir, "build_stats")
- # write end of build and cpu used into build_time
file = open(build_time, "a")
- file.write("Elapsed time: %0.2f seconds \n" % (time))
- if cpu:
- file.write("CPU usage: %0.1f%% \n" % cpu)
+ ########################################################################
+ # Write build statistics for the build
+ ########################################################################
+ timedata = get_timedata("__timedata_build", e.data)
+ if timedata:
+ time, cpu = timedata
+ # write end of build and cpu used into build_time
+ file = open(build_time, "a")
+ file.write("Elapsed time: %0.2f seconds \n" % (time))
+ if cpu:
+ file.write("CPU usage: %0.1f%% \n" % cpu)
+ diskio = get_diskdata("__diskdata_build", dev, e.data)
+ if diskio:
+ for key in sorted(diskio.iterkeys()):
+ file.write(key + ": " + diskio[key] + "\n")
file.close()
-
if isinstance(e, bb.build.TaskStarted):
- bn=get_bn(e)
- set_timedata("__timedata_task", e.data)
-
+ bn = get_bn(e)
+ device = get_device(e)
bsdir = os.path.join(bb.data.getVar('BUILDSTATS_BASE', e.data, True), bn)
taskdir = os.path.join(bsdir, bb.data.expand("${PF}", e.data))
+ set_diskdata("__diskdata_task", device, e.data)
+ set_timedata("__timedata_task", e.data)
try:
bb.mkdirhier(taskdir)
except:
@@ -131,29 +225,13 @@ python run_buildstats () {
file.close()
elif isinstance(e, bb.build.TaskSucceeded):
- bn=get_bn(e)
- timedata = get_timedata("__timedata_task", e.data)
- if not timedata:
- return
- elapsedtime, cpu = timedata
+ bn = get_bn(e)
+ device = get_device(e)
bsdir = os.path.join(bb.data.getVar('BUILDSTATS_BASE', e.data, True), bn)
taskdir = os.path.join(bsdir, bb.data.expand("${PF}", e.data))
- file = open(os.path.join(taskdir, e.task), "a")
- file.write(bb.data.expand("${PF}: %s: Elapsed time: %0.2f seconds \n" %
- (e.task, elapsedtime), e.data))
- file.write("Ended: %0.2f \n" % time.time())
- if cpu:
- file.write("CPU usage: %0.1f%% \n" % cpu)
-
- file.write("Status: PASSED")
- file.close()
-
- ##############################################
- # Alot of metric gathering occurs here.
- # Reminder: I stripped out some in process stuff here
- ##############################################
-
+ write_task_data("passed", os.path.join(taskdir, e.task), device, e)
if e.task == "do_rootfs":
+ bsdir = os.path.join(bb.data.getVar('BUILDSTATS_BASE', e.data, True), bn)
bs=os.path.join(bsdir, "build_stats")
file = open(bs,"a")
rootfs = bb.data.getVar('IMAGE_ROOTFS', e.data, True)
@@ -162,36 +240,21 @@ python run_buildstats () {
file.close()
elif isinstance(e, bb.build.TaskFailed):
- bn=get_bn(e)
- timedata = get_timedata("__timedata_task", e.data)
- if not timedata:
- return
- time, cpu = timedata
+ bn = get_bn(e)
+ device = get_device(e)
bsdir = os.path.join(bb.data.getVar('BUILDSTATS_BASE', e.data, True), bn)
taskdir = os.path.join(bsdir, bb.data.expand("${PF}", e.data))
- ##############################################
- # If the task fails dump the regular data.
- # fgrep -R "FAILED" <bsdir>
- # will grep all the events that failed.
- ##############################################
- file = open(os.path.join(taskdir, e.task), "a")
- file.write(bb.data.expand("${PF}: %s: Elapsed time: %0.2f seconds \n" %
- (e.task, time), e.data))
- if cpu:
- file.write("CPU usage: %0.1f%% \n" % cpu)
- file.write("Status: FAILED")
- file.close()
- ##############################################
- # Lets make things easier and tell people where the build failed in build_status
- # We do this here because BuildCompleted triggers no matter what the status of the
- # build actually is
- ##############################################
+ write_task_data("failed", os.path.join(taskdir, e.task), device, e)
+ ########################################################################
+ # Lets make things easier and tell people where the build failed in
+ # build_status. We do this here because BuildCompleted triggers no
+ # matter what the status of the build actually is
+ ########################################################################
build_status = os.path.join(bsdir, "build_stats")
file = open(build_status,"a")
file.write(bb.data.expand("Failed at: ${PF} at task: %s \n" % e.task, e.data))
file.close()
-
+
}
addhandler run_buildstats
-
--
1.7.1
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