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It is now built into Fedora29-arm. That is where Mark got the
source and the systemd support. Yes, earlier many just used it.
Now Fedora-arm is based on it.<br>
<br>
On the Fedora-arm list, Peter Robinson has said he is seeing 4-5
fold compression. That means that if you use a factor of 2 and have
a 1GB memory SOC, that is effectively 2.5GB ram. Or use a factor of
4 for effectively 1.75GB and less 'swapping'. So you can use your
1GB duo core system more effectively, even if you currently have
swap on a HD or SSD sata or USB attached.<br>
<br>
<br>
<div class="moz-cite-prefix">On 10/12/18 12:25 PM, Gordan Bobic
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAMx4oe0mVzWSaN8ggytdGju5BwO40UhTgqPsA_vX1ekh7BmHqw@mail.gmail.com">
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<div dir="ltr">Because swapping to SD card is slow, swapping to
zram is fast, and zram only takes about 1/2 of the RAM that it
provides.
<div>It's basically RAM compression.</div>
<div>It works and makes a positive difference, even without
exceedingly slow storage.</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Fri, Oct 12, 2018 at 5:16 PM Fred Gleason <<a
href="mailto:fredg@paravelsystems.com"
moz-do-not-send="true">fredg@paravelsystems.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">On Oct 7, 2018, at 07:58,
Robert Moskowitz <<a href="mailto:rgm@htt-consult.com"
target="_blank" moz-do-not-send="true">rgm@htt-consult.com</a>>
wrote:
<div><br>
<div>
<blockquote type="cite">
<div><span
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">I
have very recently learned about zram-swap.
Fedora-29-arm is using it. It supposedly makes a
considerable difference even over HD swap.</span><br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
<br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
<span
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">Since
many (potential) users of Centos-arm do not have a
ready HD, perhaps we can switch the image from a
physical partition to zram? Or at least
instructions to change to this on the wiki.</span></div>
</blockquote>
</div>
<br>
</div>
<div>Not to be utterly naive, but why is swap required on
such systems at all? To take core RAM and repurpose it as
swap would seem to vitiate the entire point of having a
virtual memory subsystem in the first place.</div>
<div><br>
</div>
<div>Cheers!</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div
style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">|----------------------------------------------------------------------|</span></div>
<div
style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">|
Frederick F. Gleason, Jr. | Chief
Developer |</span></div>
<div
style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">|
| Paravel Systems
|</span></div>
<div
style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">|----------------------------------------------------------------------|</span></div>
<div
style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">|
Perfection is reached, not when there is no longer
anything to add, |</span></div>
<div
style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">|
but when there is no longer anything to take away.
|</span></div>
<div
style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">|
-- Antoine de
Saint-Exupery |</span></div>
<div
style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">|----------------------------------------------------------------------|</span></div>
</div>
</div>
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