Arch Linux

progandy

Member

Registered: 2012-05-17

Posts: 5,276

Re: pacman-optimize and other utilties removed from pacman 5.1.0?

It is an old laptop from around 2010? with an hdd, boot time is around 1:30 minutes...

Maybe there is some other cache as well. See you later after a reboot.

Edit: After a reboot, it is still 2-3s now.

Last edited by progandy (2018-06-01 17:53:13)

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eschwartz

Fellow

Registered: 2014-08-08

Posts: 4,097

Re: pacman-optimize and other utilties removed from pacman 5.1.0?

It is an old laptop from around 2010? with an hdd, boot time is around 1:30 minutes...

That would definitely be something wrong.

But I don't see why you'd see a speedup when dropping the cache.

I *very* predictably get:

$ time pacman -Q bash > /dev/null
real	0m2.602s
user	0m0.028s
sys	0m0.037s

After dropping the cache

Either running pacman-optimize, *or* running pacman -Q bash a second time without dropping the cache, results in an identical speedup to:

$ time pacman -Q bash > /dev/null
real	0m0.056s
user	0m0.015s
sys	0m0.010s

This includes before having ever run pacman-optimize...

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progandy

Member

Registered: 2012-05-17

Posts: 5,276

Re: pacman-optimize and other utilties removed from pacman 5.1.0?

But I don't see why you'd see a speedup when dropping the cache.

I saw the speedup after running pacman-optimize and dropping the cache to remove the placebo effect. So I guess in my case it worked?
Cached access was always very fast. <0.2 seconds

[OT] Oh well, it is time for a new laptop anyways. At least there are a few reasonable options with amd graphics again.

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Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 30,330

Website

Re: pacman-optimize and other utilties removed from pacman 5.1.0?

Thanks progandy.  So there's a sample size of one showing it worked.

But placebos do work too

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