Forum Post: Sizes Reported By Df And By Lsof Commands

  • Thread starter Thread starter George Potemkin
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George Potemkin

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/protmp is a file system dedicated to the temp-files of Progress sessions. The total size reported by lsof /protmp (38,625,886K) is 1.85 times larger than the disk usage reported by df -k /protmp (20,825,896K). But in the theory the result should be opposite: df command returns the size in the allocated units plus it includes the size of directory listing that is a file as well. The lsof /could/ count the same file a few times if one of a few processes open the same file a few times but it's not a case with Progress temp files. I verified this explicitely. On other hand the simple test with only one session does not show the difference between these commands: pro -T /db1 -t df -k /db1 36 /db1 lsof /db1 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME _progres 21578 root 5u REG 8,49 0 11 /db1/lbikI7UMD _progres 21578 root 6u REG 8,49 0 12 /db1/srtJQR0vy _progres 21578 root 8u REG 8,49 0 13 /db1/rcdKg36et _progres 21578 root 14u REG 8,49 32768 14 /db1/DBI-1347066080QCDoko ls -l / ... drwxr-xr-x 2 root root 4096 Dec 28 17:46 db1 36K (df) = 32K (lsof) + 4K (size of db1 directory) Why we have the different results for the hundreds Pogress sessions in production environment? How to check the size of temp files correctly? Best regards and happy New Year! George

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