'Adds \'howmany\' blobs with size \'size\' kbs.'

def _AddBlobs(self, howmany, size):

    self.test_name = ('add    blobs    %dx%dk' % (howmany, size))
    count = 0
    often = (howmany / 10)
    for count in xrange(howmany):
        data = self._GenerateRandomString((1024 * size))
        data_store.DB.StoreBlob(data, token=self.token)
        if ((count % often) == 0):
            self.Register(force=True)
    self.Register(force=True)
    data_store.DB.Flush()
