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