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### Author: Dag Wieers <dag$wieers,com> class dstat_plugin(dstat): """ Total amount of read and write throughput (in bytes) on a GPFS filesystem. """ def __init__(self): self.name = 'gpfs i/o' self.nick = ('read', 'write') self.vars = ('_br_', '_bw_') def check(self): if os.access('/usr/lpp/mmfs/bin/mmpmon', os.X_OK): try: self.stdin, self.stdout, self.stderr = dpopen('/usr/lpp/mmfs/bin/mmpmon -p -s') self.stdin.write('reset\n') readpipe(self.stdout) except IOError: raise Exception, 'Cannot interface with gpfs mmpmon binary' return True raise Exception, 'Needs GPFS mmpmon binary' def extract(self): try: self.stdin.write('io_s\n') # readpipe(self.stderr) for line in readpipe(self.stdout): if not line: continue l = line.split() for name in self.vars: self.set2[name] = long(l[l.index(name)+1]) for name in self.vars: self.val[name] = (self.set2[name] - self.set1[name]) * 1.0 / elapsed except IOError, e: if op.debug > 1: print '%s: lost pipe to mmpmon, %s' % (self.filename, e) for name in self.vars: self.val[name] = -1 except Exception, e: if op.debug > 1: print '%s: exception %s' % (self.filename, e) for name in self.vars: self.val[name] = -1 if step == op.delay: self.set1.update(self.set2) # vim:ts=4:sw=4:et