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Slow install phase on some ebuilds.
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CaptainBlood
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PostPosted: Sun Apr 14, 2024 10:38 am    Post subject: Slow install phase on some ebuilds. Reply with quote

Some ebuilf in install phase are VERY slow.
It so happens swap file is obviously involved in the slow down.
SEEMS like some files to be installed are stored in swap instead of $PORTAGE_TMPDIR, which is on disk.

Couple of minutes lost in the process...

Any thought on the subject?

Thks 4 ur attention, interest & support.
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Banana
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PostPosted: Sun Apr 14, 2024 9:01 pm    Post subject: Reply with quote

I assume you know what swap is and what it is supposed to do, right? https://wiki.archlinux.org/title/Swap

Run the build and whatch RAM and swap usage, it should tell you what is going on.
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Last edited by Banana on Mon Apr 15, 2024 5:43 am; edited 1 time in total
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sublogic
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PostPosted: Sun Apr 14, 2024 10:05 pm    Post subject: Reply with quote

I would add: run vmstat 1 --unit m in a terminal window to confirm that swap is involved. The si and so columns are swap. bi and bo are disk I/O, but not swap.
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Zucca
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PostPosted: Tue Apr 16, 2024 6:00 pm    Post subject: Re: Slow install phase on some ebuilds. Reply with quote

CaptainBlood wrote:
SEEMS like some files to be installed are stored in swap instead of $PORTAGE_TMPDIR, which is on disk.
Are you using -pipe. Afaik it consumes more ram to avoid temporary files during compilation.
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