def precondition(self,nj=1,iod=1):
'''
Workload independent preconditioning for SSDs.
Write two times the device with streaming I/O.
@return True if precontioning succeded
@exception RuntimeError if fio command fails
'''
job = FioJob()
job.initialize()
job.addKVArg("filename",self.getDevPath())
job.addKVArg("bs","128k")
job.addKVArg("rw","write")
job.addKVArg("direct","1")
job.addSglArg("minimal")
job.addKVArg("numjobs",str(nj))
job.addKVArg("ioengine","libaio")
job.addKVArg("iodepth",str(iod))
job.addSglArg("group_reporting")
job.addSglArg('refill_buffers')
for i in range(SSD.wlIndPrecRnds):
logging.info("# Starting preconditioning round "+str(i))
job.addKVArg("name", self.getDevName() + '-run' + str(i))
call,out = job.start()
if call == False:
logging.error("# Could not carry out workload independent preconditioning")
raise RuntimeError, "precondition error, fio command error"
else:
logging.info(out)
logging.info("# Finished workload independent preconditioning")
return True
def precondition(self, nj=1, iod=1):
'''
Workload independent preconditioning for SSDs.
Write two times the device with streaming I/O.
@return True if precontioning succeded
@exception RuntimeError if fio command fails
'''
job = FioJob()
job.initialize()
job.addKVArg("filename", self.getDevPath())
job.addKVArg("bs", "128k")
job.addKVArg("rw", "write")
job.addKVArg("direct", "1")
job.addSglArg("minimal")
job.addKVArg("numjobs", str(nj))
job.addKVArg("ioengine", "libaio")
job.addKVArg("iodepth", str(iod))
job.addSglArg("group_reporting")
job.addSglArg('refill_buffers')
for i in range(SSD.wlIndPrecRnds):
logging.info("# Starting preconditioning round " + str(i))
job.addKVArg("name", self.getDevName() + '-run' + str(i))
call, out = job.start()
if call == False:
logging.error(
"# Could not carry out workload independent preconditioning"
)
raise RuntimeError, "precondition error, fio command error"
else:
logging.info(out)
logging.info("# Finished workload independent preconditioning")
return True
class DeviceTest(object):
'''
Representing a performance test, run on a device.
'''
__metaclass__ = ABCMeta
def __init__(self, testname, device, options=None):
'''
Constructor
@param testname Name of the test, specifies the output file
@param device The tested device, a device object
'''
## The name of the test, is used to give the resulting files a name
self.__testname = testname
## The tested device, a Device object
self.__device = device
## User defined options
self.__options = options
## A fio job used to run the tests
self.__fioJob = FioJob()
## A list of filenames representing the generated plots
self.__figures = []
## Measurement overview tables, from which plots are generated
self.__tables = []
def getTestname(self):
return self.__testname
def getDevice(self):
return self.__device
def getOptions(self):
return self.__options
def getFioJob(self):
return self.__fioJob
def getFigures(self):
return self.__figures
def getTables(self):
return self.__tables
def setFigures(self, fig):
'''
Set the list of filenames, representing generated figures.
@param fig A list of figure filenames.
'''
self.__figures = fig
def addFigure(self, fig):
''' Add a filename to the figure list.
@param fig The figure - a filename - to add
'''
self.__figures.append(fig)
def addTable(self, tb):
''' Add an overview measurement table.
@param tb The table to add
'''
self.__tables.append(tb)
def initialize(self):
''' Initialize Device and FioJob to setup params. '''
self.getDevice().initialize()
self.initFio()
self.__fioJob.checkFioVersion()
def initFio(self):
'''
Initializes the fio job to run a performance test.
@return An initialized fio job object
'''
self.__fioJob.initialize()
self.__fioJob.addKVArg("filename", self.__device.getDevPath())
self.__fioJob.addKVArg("name", self.__testname)
self.__fioJob.addKVArg("direct", "1")
self.__fioJob.addSglArg("minimal")
self.__fioJob.addKVArg("ioengine", "libaio")
self.__fioJob.addSglArg("time_based")
if self.__options == None:
self.__fioJob.addKVArg("numjobs", str(1))
self.__fioJob.addKVArg("iodepth", str(1))
self.__fioJob.addKVArg("runtime", str(60))
else:
if self.getOptions().getNj() != None:
self.__fioJob.addKVArg("numjobs",
str(self.getOptions().getNj()))
if self.getOptions().getIod() != None:
self.__fioJob.addKVArg("iodepth",
str(self.getOptions().getIod()))
if self.getOptions().getRuntime() != None:
self.__fioJob.addKVArg("runtime",
str(self.getOptions().getRuntime()))
if self.getOptions().getXargs() != None:
for arg in self.getOptions().getXargs():
self.__fioJob.addSglArg(arg)
self.__fioJob.addSglArg("group_reporting")
@abstractmethod
def testRound(self):
''' A test round for a specific device performance test. '''
@abstractmethod
def runRounds(self):
''' Run the specific test rounds. '''
@abstractmethod
def run(self):
''' Run the type specific performance test. '''
@abstractmethod
def toXml(self):
''' Get the Xml representation of a test. '''
@abstractmethod
def fromXml(self):
''' Load a test from a Xml representation. '''
@abstractmethod
def genPlots(self):
''' Generate plots for a test. '''
class DeviceTest(object):
'''
Representing a performance test, run on a device.
'''
__metaclass__ = ABCMeta
def __init__(self,testname,device,options=None):
'''
Constructor
@param testname Name of the test, specifies the output file
@param device The tested device, a device object
'''
## The name of the test, is used to give the resulting files a name
self.__testname = testname
## The tested device, a Device object
self.__device = device
## User defined options
self.__options = options
## A fio job used to run the tests
self.__fioJob = FioJob()
## A list of filenames representing the generated plots
self.__figures = []
## Measurement overview tables, from which plots are generated
self.__tables = []
def getTestname(self): return self.__testname
def getDevice(self): return self.__device
def getOptions(self): return self.__options
def getFioJob(self): return self.__fioJob
def getFigures(self): return self.__figures
def getTables(self): return self.__tables
def setFigures(self,fig):
'''
Set the list of filenames, representing generated figures.
@param fig A list of figure filenames.
'''
self.__figures = fig
def addFigure(self,fig):
''' Add a filename to the figure list.
@param fig The figure - a filename - to add
'''
self.__figures.append(fig)
def addTable(self,tb):
''' Add an overview measurement table.
@param tb The table to add
'''
self.__tables.append(tb)
def initialize(self):
''' Initialize Device and FioJob to setup params. '''
self.getDevice().initialize()
self.initFio()
self.__fioJob.checkFioVersion()
def initFio(self):
'''
Initializes the fio job to run a performance test.
@return An initialized fio job object
'''
self.__fioJob.initialize()
self.__fioJob.addKVArg("filename",self.__device.getDevPath())
self.__fioJob.addKVArg("name",self.__testname)
self.__fioJob.addKVArg("direct","1")
self.__fioJob.addSglArg("minimal")
self.__fioJob.addKVArg("ioengine","libaio")
self.__fioJob.addSglArg("time_based")
if self.__options == None:
self.__fioJob.addKVArg("numjobs",str(1))
self.__fioJob.addKVArg("iodepth",str(1))
self.__fioJob.addKVArg("runtime",str(60))
else:
if self.getOptions().getNj() != None:
self.__fioJob.addKVArg("numjobs",str(self.getOptions().getNj()))
if self.getOptions().getIod() != None:
self.__fioJob.addKVArg("iodepth",str(self.getOptions().getIod()))
if self.getOptions().getRuntime() != None:
self.__fioJob.addKVArg("runtime",str(self.getOptions().getRuntime()))
if self.getOptions().getXargs() != None:
for arg in self.getOptions().getXargs():
self.__fioJob.addSglArg(arg)
self.__fioJob.addSglArg("group_reporting")
@abstractmethod
def testRound(self):
''' A test round for a specific device performance test. '''
@abstractmethod
def runRounds(self):
''' Run the specific test rounds. '''
@abstractmethod
def run(self):
''' Run the type specific performance test. '''
@abstractmethod
def toXml(self):
''' Get the Xml representation of a test. '''
@abstractmethod
def fromXml(self):
''' Load a test from a Xml representation. '''
@abstractmethod
def genPlots(self):
''' Generate plots for a test. '''