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[Launchpad Bug Tracker <1582181@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package lshw - 02.18-0.1ubuntu6

---------------
lshw (02.18-0.1ubuntu6) bionic; urgency=medium

  * AArch64: cpuinfo: Remove redundant cpu caps loop (LP: #1582181)
    (Merged into EZix upstream commit [20cda772])

 -- Ike Panhc <ike.pan@xxxxxxxxxxxxx>  Wed, 21 Mar 2018 14:42:13 +0800

** Changed in: lshw (Ubuntu Bionic)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1582181

Title:
  AArch64: slow cpuinfo due to redundant loop

Status in lshw package in Ubuntu:
  Fix Released
Status in lshw source package in Xenial:
  New
Status in lshw source package in Artful:
  New
Status in lshw source package in Bionic:
  Fix Released

Bug description:
  [Impact]
  lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
  It takes minutes on 96cores and almost 10min on 224cores system.

  [Test Case]
  `time sudo lshw` and it shall be less then 15sec

  [Regression Potential]
  This patch only modifies codes for aarch64. Lowest regression rick on other arch and has been tested on aarch64

  [Other Info]
  Patch has been merged into upstream branch.
  https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1

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