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2e6314580e
This updates the patchset for better memory fragmentation behavior and also adds a patch to reduce logging pressure if a lot of new files have been added. The latter patch is pending upstream. Signed-off-by: Kai Krakow <kai@kaishome.de> Signed-off-by: Joonas Niilola <juippis@gentoo.org>
44 lines
1.4 KiB
Diff
44 lines
1.4 KiB
Diff
From 291574986ccfaff8b620f6baa185a567f2f0cfb5 Mon Sep 17 00:00:00 2001
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From: Kai Krakow <kai@kaishome.de>
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Date: Sun, 9 Jul 2023 12:24:40 +0200
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Subject: [PATCH 2/2] HACK: crucible: Work around kernel memory fragmentation
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According to @Zygo:
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> This will drastically reduce the number of reflinks bees can handle
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> to a single extent, but that size is beyond more than enough for most
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> filesystems. Making the buffer smaller may also reduce the size of
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> vmallocs which might be aggravating the kernel's memory manager.
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v2:
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According to @Zygo:
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> Lately I've been running with vm.swappiness=0 and
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> BEES_MAX_EXTENT_REF_COUNT set to 9999. With those settings there's no
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> swapping at all.
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Link: https://github.com/Zygo/bees/issues/260#issuecomment-1627586574
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Link: https://github.com/Zygo/bees/issues/260#issuecomment-2068287231
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Signed-off-by: Kai Krakow <kai@kaishome.de>
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---
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src/bees.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/bees.h b/src/bees.h
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index 4dbc005..a3c3872 100644
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--- a/src/bees.h
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+++ b/src/bees.h
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@@ -96,7 +96,7 @@ const double BEES_TOO_LONG = 5.0;
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const double BEES_TOXIC_SYS_DURATION = 0.1;
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// Maximum number of refs to a single extent
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-const size_t BEES_MAX_EXTENT_REF_COUNT = (16 * 1024 * 1024 / 24) - 1;
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+const size_t BEES_MAX_EXTENT_REF_COUNT = (10000) - 1;
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// How long between hash table histograms
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const double BEES_HASH_TABLE_ANALYZE_INTERVAL = BEES_STATS_INTERVAL;
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--
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2.44.2
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