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PHP code:

root@sid:~# uname -a
Linux sid 2.6.31-1-686 #1 SMP Sun Nov 15 20:39:33 UTC 2009 i686 GNU/Linux

root@sid:~# cat /proc/1/io
rchar: 16428807
wchar: 8202326
syscr: 27617
syscw: 5263
read_bytes: 32885248
write_bytes: 3801088
cancelled_write_bytes: 3670016


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PHP code
root@sid:~# uname -aLinux sid2.6.31-1-686#1 SMP Sun Nov 15 20:39:33 UTC 2009 i686 GNU/Linux
root@sid:~# cat /proc/1/iorchar:16428807
wchar:8202326
syscr:27617
syscw:5263
read_bytes:32885248
write_bytes:3801088
cancelled_write_bytes:3670016


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