xfs-masters
[Top] [All Lists]

[Bug 43013] creating files >8GB on xfs / very slow

To: xfs-masters@xxxxxxxxxxx
Subject: [Bug 43013] creating files >8GB on xfs / very slow
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Fri, 30 Mar 2012 15:52:18 GMT
Auto-submitted: auto-generated
In-reply-to: <bug-43013-470@xxxxxxxxxxxxxxxxxxxxxxxxx/>
References: <bug-43013-470@xxxxxxxxxxxxxxxxxxxxxxxxx/>
https://bugzilla.kernel.org/show_bug.cgi?id=43013





--- Comment #9 from ITec <itec@xxxxxxxxxxxxxxxxxxx>  2012-03-30 15:52:17 ---
The same test under 3.1.10:

  # xfs_fsr -v /dev/sda3
  / start inode=0
  ino=20294080
  ino=20294080 already fully defragmented.

  # df -m /tmp
  Filesystem     1M-blocks  Used Available Use% Mounted on
  /dev/sda3          15248  2553     12696  17% /

  # dd if=/dev/zero of=/tmp/zero1.tmp bs=1024 count=9000000; echo syncing; time
sync
  9000000+0 records in
  9000000+0 records out
  9216000000 bytes (9,2 GB) copied, 91,3123 s, 101 MB/s
  syncing

  real    0m3.029s
  user    0m0.004s
  sys     0m0.000s

  # xfs_bmap /tmp/zero*
  /tmp/zero1.tmp:
        0: [0..4194303]: 26708152..30902455
        1: [4194304..8388607]: 11237112..15431415
        2: [8388608..12076735]: 4123968..7812095
        3: [12076736..15671151]: 19841872..23436287
        4: [15671152..16201615]: 18355464..18885927
        5: [16201616..16547543]: 30902456..31248383
        6: [16547544..16777215]: 3523816..3753487
        7: [16777216..17113183]: 10532744..10868711
        8: [17113184..17139023]: 10011920..10037759
        9: [17139024..17399103]: 18960144..19220223
        10: [17399104..17569775]: 15431416..15602087
        11: [17569776..17633927]: 18886432..18950583
        12: [17633928..17715311]: 19264640..19346023
        13: [17715312..17785367]: 26181368..26251423
        14: [17785368..17854791]: 26399192..26468615
        15: [17854792..17923999]: 25742880..25812087
        16: [17924000..17988511]: 3155768..3220279
        17: [17988512..17999999]: 3223528..3235015

  # df -m /tmp
  Filesystem     1M-blocks  Used Available Use% Mounted on
  /dev/sda3          15248 11343      3906  75% /

Now creation of a single 9GB file takes a bit more than 90s.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

<Prev in Thread] Current Thread [Next in Thread>