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Index: head/sys/vm/uma_core.c
===================================================================
--- head/sys/vm/uma_core.c
+++ head/sys/vm/uma_core.c
@@ -236,16 +236,15 @@
(((sizeof(void *) * (n)) - sizeof(struct uma_bucket)) / sizeof(void *))
#define BUCKET_MAX BUCKET_SIZE(256)
-#define BUCKET_MIN BUCKET_SIZE(4)
+#define BUCKET_MIN 2
struct uma_bucket_zone bucket_zones[] = {
-#ifndef __ILP32__
- { NULL, "4 Bucket", BUCKET_SIZE(4), 4096 },
-#endif
- { NULL, "6 Bucket", BUCKET_SIZE(6), 3072 },
- { NULL, "8 Bucket", BUCKET_SIZE(8), 2048 },
- { NULL, "12 Bucket", BUCKET_SIZE(12), 1536 },
- { NULL, "16 Bucket", BUCKET_SIZE(16), 1024 },
+ /* Literal bucket sizes. */
+ { NULL, "2 Bucket", 2, 4096 },
+ { NULL, "4 Bucket", 4, 3072 },
+ { NULL, "8 Bucket", 8, 2048 },
+ { NULL, "16 Bucket", 16, 1024 },
+ /* Rounded down power of 2 sizes for efficiency. */
{ NULL, "32 Bucket", BUCKET_SIZE(32), 512 },
{ NULL, "64 Bucket", BUCKET_SIZE(64), 256 },
{ NULL, "128 Bucket", BUCKET_SIZE(128), 128 },

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