Public bug reported:

STR:

1. swift upload bucketname big-file.bin

Expected results:
Upload is performed as usual for ftp or HTTP PUT 

Actual results:
CPU usage spikes to more than 100% during upload.

Swift does not create local md5sum of the file as I understand and the
increased CPU usage is seen once the code gets into
eventlet.green.httplib, increasing the chunk size in swift script does
not help at all.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: swift 1.4.7-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
Uname: Linux 3.2.0-19-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Mon Mar 19 13:32:43 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120225)
PackageArchitecture: all
SourcePackage: swift
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: swift
     Importance: Undecided
         Status: New

** Affects: swift (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise

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https://bugs.launchpad.net/bugs/959221

Title:
  swift consumes over 100% of cpu during upload

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