47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Library General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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# See the COPYING file for license information.
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#
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# Copyright (c) 2007 Guillaume Chazarain <guichaz@gmail.com>
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class VmStat(object):
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def __init__(self):
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self.vmstat_file = open('/proc/vmstat')
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self.vmstat = self.read()
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def read(self):
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def extract(line):
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return int(line.split()[1]) * 1024
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for line in self.vmstat_file:
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if line.startswith('pgpgin '):
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pgpgin = extract(line)
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break
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for line in self.vmstat_file:
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if line.startswith('pgpgout '):
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pgpgout = extract(line)
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break
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self.vmstat_file.seek(0)
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return pgpgin, pgpgout
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def delta(self):
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now = self.read()
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delta = now[0] - self.vmstat[0], now[1] - self.vmstat[1]
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self.vmstat = now
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return delta
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