From Fedora Project Wiki

(improve formatting and description)
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== What to test? ==
 
== What to test? ==
  
Today's installment of Fedora Test Day will focus on testing the new '''[https://fedoraproject.org/wiki/Changes/SwapOnZRAM SwapOnZRAM]''' change set.  
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Today's installment of Fedora Test Day will focus on testing '''[[Changes/SwapOnZRAM]]'''.  
  
 
== Who's available? ==
 
== Who's available? ==
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== Prerequisites for Test Day ==  
 
== Prerequisites for Test Day ==  
  
Any Fedora edition/spin: 31, 32, Rawhide.
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<ol>
 
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<li> A virtual machine or a bare metal machine. Using low-memory machines like ARM boards, netbooks or old PCs is very helpful, because it's much easier to run out of available memory on them. But this feature can also be tested on high-performance workstations and servers with lots of RAM.
<span style=color:red>dnf install zram-generator</span></br >
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<li> Any Fedora Edition or Spin in version 31, 32 or Rawhide.
<span style=color:red>cp /usr/share/doc/zram-generator/zram-generator.conf.example /etc/systemd/zram-generator.conf</span></br >
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<li> Install `zram-generator`:
* Edit the copy of the config file, and insert:</br >
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<pre>sudo dnf install zram-generator
<span style=color:red>[zram0]</span></br >
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sudo cp /usr/share/doc/zram-generator/zram-generator.conf.example /etc/systemd/zram-generator.conf</pre>
<span style=color:red>memory-limit = none</span></br >
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<li> Edit `/etc/systemd/zram-generator.conf` and set these values:
<span style=color:red>zram-fraction = 0.5</span></br >
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<pre>[zram0]
 
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memory-limit = none
Optional: <span style=color:red>dnf remove anaconda zram</span></br >
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zram-fraction = 0.5</pre>
The swap-on-zram implementations in these packages have minor conflicts with zram-generator, but mostly they'll just contribute to user confusion.
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<li> Optionally remove the following packages. The swap-on-zram implementations in those packages have minor conflicts with `zram-generator`, but mostly they'll just contribute to user confusion.
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<pre>sudo dnf remove anaconda zram</pre>
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</ol>
  
  
 
== How to test? ==
 
== How to test? ==
 
  
 
Simple memory hogging test: Open dozens of Firefox tabs, until memory and swap fill up.
 
Simple memory hogging test: Open dozens of Firefox tabs, until memory and swap fill up.
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If you have problems with any of the tests, have a look in the [http://testdays.fedorainfracloud.org/events/86 results page]. Please include the vulnerability output at the end of the test suite in the comments.  
 
If you have problems with any of the tests, have a look in the [http://testdays.fedorainfracloud.org/events/86 results page]. Please include the vulnerability output at the end of the test suite in the comments.  
If you don't see it, please file a new bug to [https://bugzilla.redhat.com Bugzilla], probably against <code>rust-zram-generator</code> component.  If you are unsure about exactly how to file the report or what other information to include, just ask on IRC #fedora-test-day or #fedora-qa and we will help you.
 
 
== Test Results ==
 
  
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If you don't see it, please file a new bug to [https://bugzilla.redhat.com Bugzilla], probably against <code>rust-zram-generator</code> component.  If you are unsure about exactly how to file the report or what other information to include, just ask on IRC #fedora-test-day or #fedora-qa and we will help you.
  
 
[[Category:Fedora 33 Test Days]]
 
[[Category:Fedora 33 Test Days]]

Revision as of 13:47, 16 June 2020

Fedora Test Day
Echo-testing-48px.png
SwapOnZRAM

Date TBD
Time all week

Website QA/Test Days
IRC #fedora-test-day (webirc)
Mailing list test


Note.png
Can't make the date?
If you come to this page before or after the test day is completed, your testing is still valuable, and you can use the information on this page to test, file any bugs you find at Bugzilla, and add your results to the results section. If this page is more than a month old when you arrive here, please check the current schedule and see if a similar but more recent Test Day is planned or has already happened.

What to test?

Today's installment of Fedora Test Day will focus on testing Changes/SwapOnZRAM.

Who's available?

The following cast of characters will be available for testing, workarounds, bug fixes, and general discussion ...

Prerequisites for Test Day

  1. A virtual machine or a bare metal machine. Using low-memory machines like ARM boards, netbooks or old PCs is very helpful, because it's much easier to run out of available memory on them. But this feature can also be tested on high-performance workstations and servers with lots of RAM.
  2. Any Fedora Edition or Spin in version 31, 32 or Rawhide.
  3. Install zram-generator:
    sudo dnf install zram-generator
    sudo cp /usr/share/doc/zram-generator/zram-generator.conf.example /etc/systemd/zram-generator.conf
  4. Edit /etc/systemd/zram-generator.conf and set these values:
    [zram0]
    memory-limit = none
    zram-fraction = 0.5
  5. Optionally remove the following packages. The swap-on-zram implementations in those packages have minor conflicts with zram-generator, but mostly they'll just contribute to user confusion.
    sudo dnf remove anaconda zram


How to test?

Simple memory hogging test: Open dozens of Firefox tabs, until memory and swap fill up.

Optional: zram performance testing toolset This is a bit more complex to get setup and understand the results. But could be useful to confirm/deny the default compression algorithm: lzo-rle is a good default across many architectures and general purpose workloads.

Run the tests

Reporting bugs

If you have problems with any of the tests, have a look in the results page. Please include the vulnerability output at the end of the test suite in the comments.

If you don't see it, please file a new bug to Bugzilla, probably against rust-zram-generator component. If you are unsure about exactly how to file the report or what other information to include, just ask on IRC #fedora-test-day or #fedora-qa and we will help you.