39 lines
1.8 KiB
Diff
39 lines
1.8 KiB
Diff
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From 4b09123e9b0554ed67937ca00a5c4cfd3f9c43ef Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Fri, 24 Jul 2020 22:05:21 +0200
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Subject: [PATCH] Bump /tmp size back to 50% of RAM
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This should be enough to fix https://bugzilla.redhat.com/show_bug.cgi?id=1856514.
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But the limit should be significantly higher than 10% anyway. By setting a
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limit on /tmp at 10% we'll break many reasonable use cases, even though the
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machine would deal fine with a much larger fraction devoted to /tmp.
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(In the first version of this patch I made it 25% with the comment that
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"Even 25% might be too low.". The kernel default is 50%, and we have been using
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that seemingly without trouble since https://fedoraproject.org/wiki/Features/tmp-on-tmpfs.
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So let's just make it 50% again.)
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See 7d85383edbab73274dc81cc888d884bb01070bc2.
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(Another consideration is that we learned from from the whole initiative with
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zram in Fedora that a reasonable size for zram is 0.5-1.5 of RAM, and that pretty
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much all systems benefit from having zram or zswap enabled. Thus it is reasonable
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to assume that it'll become widely used. Taking the usual compression effectiveness
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of 0.2 into account, machines have effective memory available of between
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1.0 - 0.2*0.5 + 0.5 = 1.4 (for zram sized to 0.5 of RAM) and
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1.0 - 0.2*1.5 + 1.5 = 2.2 (for zram 1.5 sized to 1.5 of RAM) times RAM size.
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This means that the 10% was really like 7-4% of effective memory.)
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---
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units/tmp.mount | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/units/tmp.mount b/units/tmp.mount
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index 7066e52261..cf6837852f 100644
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--- a/units/tmp.mount
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+++ b/units/tmp.mount
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@@ -22,4 +22,4 @@ After=swap.target
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What=tmpfs
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Where=/tmp
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Type=tmpfs
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-Options=mode=1777,strictatime,nosuid,nodev,size=10%,nr_inodes=400k
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+Options=mode=1777,strictatime,nosuid,nodev,size=50%,nr_inodes=400k
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