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#!/usr/bin/python -tt
#
# platform utility functions used by various parts of rteval
#
import sys
import os
import os.path
import subprocess
def get_base_os():
'''record what userspace we're running on'''
distro = "unknown"
for f in ('redhat-release', 'fedora-release'):
p = os.path.join('/etc', f)
if os.path.exists(p):
f = open(p, 'r')
distro = f.readline().strip()
f.close()
break
return distro
def get_num_nodes():
from glob import glob
nodes = len(glob('/sys/devices/system/node/node*'))
return nodes
def get_memory_size():
'''find out how much memory is installed'''
f = open('/proc/meminfo')
rawsize = 0
for l in f:
if l.startswith('MemTotal:'):
parts = l.split()
if parts[2].lower() != 'kb':
raise RuntimeError, "Units changed from kB! (%s)" % parts[2]
rawsize = int(parts[1])
f.close()
break
if rawsize == 0:
raise RuntimeError, "can't find memtotal in /proc/meminfo!"
# Get a more readable result
# Note that this depends on /proc/meminfo starting in Kb
units = ('KB', 'MB','GB','TB')
size = rawsize
for unit in units:
if size < 1024:
break
size = float(size) / 1024
return (size, unit)
def get_clocksources():
'''get the available and curent clocksources for this kernel'''
path = '/sys/devices/system/clocksource/clocksource0'
if not os.path.exists(path):
raise RuntimeError, "Can't find clocksource path in /sys"
f = open (os.path.join (path, "current_clocksource"))
current_clocksource = f.readline().strip()
f = open (os.path.join (path, "available_clocksource"))
available_clocksource = f.readline().strip()
f.close()
return (current_clocksource, available_clocksource)
def get_modules():
modlist = []
try:
fp = open('/proc/modules', 'r')
line = fp.readline()
while line:
mod = line.split()
modlist.append({"modname": mod[0],
"modsize": mod[1],
"numusers": mod[2],
"usedby": mod[3],
"modstate": mod[4]})
line = fp.readline()
fp.close()
except Exception, err:
raise err
return modlist
if __name__ == "__main__":
print "\tRunning on %s" % get_base_os()
print "\tNUMA nodes: %d" % get_num_nodes()
print "\tMemory available: %03.2f %s" % get_memory_size()
(curr, avail) = get_clocksources()
print "\tCurrent clocksource: %s" % curr
print "\tAvailable clocksources: %s" % avail
print "\tModules:"
for m in get_modules():
print "\t\t%s: %s" % (m['modname'], m['modstate'])
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