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koschi
Tux's lil' helper
Joined: 09 Oct 2004
Posts: 123
Location: Tianjin, CN
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 Posted: Sat Jul 24, 2021 6:04 am Post subject: [solved] Emerging qtwebengine fails (out of memory) |
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Hello all,
I'm failing to emerge the latest qtwebengine-5.15.2_p20210625 because I'm running out of memory. Short system specs:
Core i5-10300H
8GB RAM
10GB SWAP
I activated zswap in my kernel and deactivated the "jumbo-build" use-flag but it still fails.
On every attempt I find this in my /var/log/kern.log:
| Code: | Jul 24 02:07:25 mobiletux kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/,task=cc1plus,pid=5410,uid=250
Jul 24 02:07:25 mobiletux kernel: Out of memory: Killed process 5410 (cc1plus) total-vm:2354836kB, anon-rss:657056kB, file-rss:2940kB, shmem-rss:0kB, UID:250 pgtables:4472kB oom_score_adj:0
Jul 24 02:07:26 mobiletux kernel: oom_reaper: reaped process 5410 (cc1plus), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB |
Any suggestions for a workaround to avoid buying another 8GB RAM module? Did anyone try a swap partition on an USB drive?
Thanks!
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Last edited by koschi on Sat Jul 24, 2021 6:46 pm; edited 1 time in total |
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pietinger
Moderator
Joined: 17 Oct 2006
Posts: 4152
Location: Bavaria
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| Posted: Sat Jul 24, 2021 7:55 am Post subject: |
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| koschi wrote: | | Any suggestions for a workaround to avoid buying another 8GB RAM module? |
Forget to build any bigger swap. You have to lower your MAKEOPTS. With 8GB you can try to set "jumbo-build" and this (its from my machine):
| Code: | # mkdir /etc/portage/env
# nano -w /etc/portage/env/monster.conf
=>
MAKEOPTS="-j2"
<=
# nano -w /etc/portage/package.env
=>
# app-office/libreoffice monster.conf
# dev-lang/rust monster.conf
dev-qt/qtwebengine monster.conf
# sys-devel/gcc monster.conf
<= |
See more here: https://wiki.gentoo.org/wiki//etc/portage/package.env |
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Goverp
Advocate
Joined: 07 Mar 2007
Posts: 2008
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| Posted: Sat Jul 24, 2021 10:21 am Post subject: |
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Other (additional) ways to reduce memory load: don't use tmpfs for PORTAGE_TEMPDIR, and possibly don't use "-pipe" in CFLAGS - I don't know if the second is significant.
Both will reduce the speed of compilation a bit, but they're far better than than overcommitting memory leading to page thrashing.
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koschi
Tux's lil' helper
Joined: 09 Oct 2004
Posts: 123
Location: Tianjin, CN
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| Posted: Sat Jul 24, 2021 6:45 pm Post subject: |
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| pietinger wrote: | | koschi wrote: | | Any suggestions for a workaround to avoid buying another 8GB RAM module? |
Forget to build any bigger swap. You have to lower your MAKEOPTS. With 8GB you can try to set "jumbo-build" and this (its from my machine):
| Code: | # mkdir /etc/portage/env
# nano -w /etc/portage/env/monster.conf
=>
MAKEOPTS="-j2"
<=
# nano -w /etc/portage/package.env
=>
# app-office/libreoffice monster.conf
# dev-lang/rust monster.conf
dev-qt/qtwebengine monster.conf
# sys-devel/gcc monster.conf
<= |
See more here: https://wiki.gentoo.org/wiki//etc/portage/package.env |
Thanks! This proposal worked for me -> issue solved
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