class Processes(Check):
def __init__(self, logger):
Check.__init__(self, logger)
self.gauge('system.proc.queue_length')
self.gauge('system.proc.count')
self.numprocs = WinPDHCounter('System', 'Processes', logger)
self.pql = WinPDHCounter('System', 'Processor Queue Length', logger)
def check(self, agentConfig):
processor_queue_length = self.pql.get_single_value()
processes = self.numprocs.get_single_value()
if processor_queue_length is not None:
self.save_sample('system.proc.queue_length',
processor_queue_length)
if processes is not None:
self.save_sample('system.proc.count', processes)
return self.get_metrics()
class Memory(Check):
def __init__(self, logger):
Check.__init__(self, logger)
self.gauge('system.mem.free')
self.gauge('system.mem.used')
self.gauge('system.mem.total')
# area of physical memory that stores recently used pages of data
# for applications
self.gauge('system.mem.cached')
# Committed memory is physical memory for which space has been
# reserved on the disk paging file in case it must be written
# back to disk
self.gauge('system.mem.committed')
# physical memory used by the operating system, for objects
# that can be written to disk when they are not being used
self.gauge('system.mem.paged')
# physical memory used by the operating system for objects that
# cannot be written to disk, but must remain in physical memory
# as long as they are allocated.
self.gauge('system.mem.nonpaged')
# usable = free + cached
self.gauge('system.mem.usable')
self.gauge('system.mem.pct_usable')
# details about the usage of the pagefile.
self.gauge('system.mem.pagefile.total')
self.gauge('system.mem.pagefile.used')
self.gauge('system.mem.pagefile.free')
self.gauge('system.mem.pagefile.pct_free')
self.cache_bytes_counter = WinPDHCounter('Memory', 'Cache Bytes',
logger)
self.committed_bytes_counter = WinPDHCounter('Memory',
'Committed Bytes', logger)
self.pool_paged_bytes_counter = WinPDHCounter('Memory',
'Pool Paged Bytes',
logger)
self.pool_non_paged_bytes_counter = WinPDHCounter(
'Memory', 'Pool Nonpaged Bytes', logger)
def check(self, agentConfig):
total = 0
free = 0
cached = 0
mem = psutil.virtual_memory()
total_visible_memory_size = mem.total / B2KB
free_physical_memory = mem.available / B2KB
if total_visible_memory_size is not None and free_physical_memory is not None:
total = int(total_visible_memory_size) / KB2MB
free = int(free_physical_memory) / KB2MB
self.save_sample('system.mem.total', total)
self.save_sample('system.mem.free', free)
self.save_sample('system.mem.used', total - free)
cache_bytes = self.cache_bytes_counter.get_single_value()
committed_bytes = self.committed_bytes_counter.get_single_value()
pool_paged_bytes = self.pool_paged_bytes_counter.get_single_value()
pool_non_paged_bytes = self.pool_non_paged_bytes_counter.get_single_value(
)
if cache_bytes is not None:
cached = int(cache_bytes) / B2MB
self.save_sample('system.mem.cached', cached)
if committed_bytes is not None:
self.save_sample('system.mem.committed',
int(committed_bytes) / B2MB)
if pool_paged_bytes is not None:
self.save_sample('system.mem.paged', int(pool_paged_bytes) / B2MB)
if pool_non_paged_bytes is not None:
self.save_sample('system.mem.nonpaged',
int(pool_non_paged_bytes) / B2MB)
usable = free + cached
self.save_sample('system.mem.usable', usable)
if total > 0:
pct_usable = float(usable) / total
self.save_sample('system.mem.pct_usable', pct_usable)
# swap_memory pulls from the pagefile data,
# rather than from the whole virtual memory data.
page = psutil.swap_memory()
if page.total is not None:
self.save_sample('system.mem.pagefile.total', page.total)
self.save_sample('system.mem.pagefile.used', page.used)
self.save_sample('system.mem.pagefile.free', page.free)
self.save_sample('system.mem.pagefile.pct_free',
(100 - page.percent) / 100)
return self.get_metrics()
