Bug 905219 - encfs burns CPU on kernel-3.8.0-0.rc5.git0.1.fc19.x86_64
Summary: encfs burns CPU on kernel-3.8.0-0.rc5.git0.1.fc19.x86_64
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-01-28 21:51 UTC by Mace Moneta
Modified: 2013-01-30 22:52 UTC (History)
7 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2013-01-30 22:52:55 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)
I straced the encfs process for a few seconds (375.07 KB, text/plain)
2013-01-28 21:51 UTC, Mace Moneta 		no flags Details
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Description Mace Moneta 2013-01-28 21:51:29 UTC 
Created attachment 689365 [details]
I straced the encfs process for a few seconds

Description of problem:

When running with kernel-3.8.0-0.rc5.git0.1.fc19.x86_64 on F18 and using encfs, the encfs process consumes a CPU (~25% CPU on my core2 quad) while mostly idle.

Version-Release number of selected component (if applicable):

kernel-3.8.0-0.rc5.git0.1.fc19.x86_64

How reproducible:


Steps to Reproduce:
1. Install kernel-3.8.0-0.rc5.git0.1.fc19.x86_64
2. Mount an encfs directory
3. Point some apps at the corresponding unencrypted directory
4. Have them occasionally manipulate some files
  
Actual results:

100% of one core CPU utilization.

Expected results:

Near zero CPU utilization, as on kernel-3.7.4-204.fc18.x86_64

Additional info:
Comment 1 Mace Moneta 2013-01-28 22:21:43 UTC 
I should have noted that the filesystem in use (in which the encfs directories exist) is btrfs.
Comment 2 Mace Moneta 2013-01-30 22:52:55 UTC 
Problem no longer occurs on kernel-3.8.0-0.rc5.git1.2.fc19.x86_64, closing.
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