Re: Incredibly SLOW unlinks with xfs and 2.6.11.4

[Harry Edmon <harry@xxxxxxxxxxxxxxxxxxxx>]

Here is the output from a large file:

KYUX_20050308_1007:
 EXT: FILE-OFFSET      BLOCK-RANGE            AG AG-OFFSET            TOTAL
   0: [0..31]:         1899129752..1899129783 20 (68325432..68325463)    32
   1: [32..63]:        1899168096..1899168127 20 (68363776..68363807)    32
   2: [64..79]:        1899168272..1899168287 20 (68363952..68363967)    16
   3: [80..167]:       2078671776..2078671863 22 (64787024..64787111)    88
   4: [168..247]:      2078672280..2078672359 22 (64787528..64787607)    80
   5: [248..399]:      2265911272..2265911423 24 (68946088..68946239)   152
   6: [400..431]:      2265911744..2265911775 24 (68946560..68946591)    32
   7: [432..455]:      2446663984..2446664007 26 (66618368..66618391)    24
   8: [456..511]:      2446665976..2446666031 26 (66620360..66620415)    56
   9: [512..631]:      2446668440..2446668559 26 (66622824..66622943)   120
  10: [632..671]:      2446669088..2446669127 26 (66623472..66623511)    40
  11: [672..719]:      2446688096..2446688143 26 (66642480..66642527)    48
  12: [720..815]:      2446696616..2446696711 26 (66651000..66651095)    96
  13: [816..879]:      2446697368..2446697431 26 (66651752..66651815)    64
  14: [880..919]:      2446697512..2446697551 26 (66651896..66651935)    40
  15: [920..951]:      2446698000..2446698031 26 (66652384..66652415)    32
  16: [952..975]:      2446698136..2446698159 26 (66652520..66652543)    24
  17: [976..1007]:     2446698336..2446698367 26 (66652720..66652751)    32
  18: [1008..1071]:    2446698672..2446698735 26 (66653056..66653119)    64
  19: [1072..1095]:    2446700048..2446700071 26 (66654432..66654455)    24

Here is a small file:

N0R_20050308_1944:
 EXT: FILE-OFFSET      BLOCK-RANGE            AG AG-OFFSET            TOTAL
   0: [0..15]:         2908501240..2908501255 31 (70754544..70754559)    16

Chris Wedgwood wrote:
> On Thu, Mar 17, 2005 at 03:53:56PM -0800, Harry Edmon wrote:
>
>
> > I am running 2.6.11.4 with a 1.4 TB XFS file system on a 3ware 9000
> > controller that is 53% full on a Dual Xeon system.  The filesystem
> > has 4.5M files on it.  File unlinks are running incredibly slow.
>
> xfs_bmap -v path/to/typical/file
>
> says what?