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ZONE(9): Reduce BUCKET_MAX to 128

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Reduces the worst-case per-processor caches.
This commit is contained in:
Sebastian Huber 2016-11-21 14:56:59 +01:00
parent b988014362
commit be708ff182
1 changed files with 7 additions and 1 deletions
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8
freebsd/sys/vm/uma_core.c
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@ -226,7 +226,11 @@ struct uma_bucket_zone {
#define BUCKET_SIZE(n) \
(((sizeof(void *) * (n)) - sizeof(struct uma_bucket)) / sizeof(void *))
#ifndef __rtems__
#define BUCKET_MAX BUCKET_SIZE(256)
#else /* __rtems__ */
#define BUCKET_MAX BUCKET_SIZE(128)
#endif /* __rtems__ */
struct uma_bucket_zone bucket_zones[] = {
{ NULL, "4 Bucket", BUCKET_SIZE(4), 4096 },
@ -237,7 +241,9 @@ struct uma_bucket_zone bucket_zones[] = {
{ NULL, "32 Bucket", BUCKET_SIZE(32), 512 },
{ NULL, "64 Bucket", BUCKET_SIZE(64), 256 },
{ NULL, "128 Bucket", BUCKET_SIZE(128), 128 },
#ifndef __rtems__
{ NULL, "256 Bucket", BUCKET_SIZE(256), 64 },
#endif /* __rtems__ */
{ NULL, NULL, 0}
};
@ -733,6 +739,7 @@ cache_drain(uma_zone_t zone)
ZONE_UNLOCK(zone);
}
#ifndef __rtems__
static void
cache_shrink(uma_zone_t zone)
{
@ -782,7 +789,6 @@ cache_drain_safe_cpu(uma_zone_t zone)
bucket_free(zone, b2, NULL);
}
#ifndef __rtems__
/*
* Safely drain per-CPU caches of a zone(s) to alloc bucket.
* This is an expensive call because it needs to bind to all CPUs