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Be more aggressive about growing the packet cache.
Also add a test.
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parent
f3b58bbf5c
commit
94c42ea784
2 changed files with 33 additions and 4 deletions
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@ -204,14 +204,16 @@ func (cache *Cache) ResizeCond(capacity int) bool {
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current := len(cache.entries)
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if current >= capacity/2 && current < capacity*2 {
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if current >= capacity*3/4 && current < capacity*2 {
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return false
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}
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if int(cache.tail) > current/2 && int(cache.tail) > capacity/2 {
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// bad time to resize, this would invalidate too many indices
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if capacity < current {
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if int(cache.tail) > capacity {
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// this would invalidate too many indices
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return false
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}
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}
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cache.resize(capacity)
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return true
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@ -128,6 +128,33 @@ func TestCacheShrink(t *testing.T) {
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}
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}
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func TestCacheGrowCond(t *testing.T) {
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cache := New(16)
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if len(cache.entries) != 16 {
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t.Errorf("Expected 16, got %v", len(cache.entries))
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}
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done := cache.ResizeCond(17)
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if done || len(cache.entries) != 16 {
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t.Errorf("Grew cache by 1")
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}
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done = cache.ResizeCond(15)
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if done || len(cache.entries) != 16 {
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t.Errorf("Shrunk cache by 1")
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}
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done = cache.ResizeCond(32)
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if !done || len(cache.entries) != 32 {
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t.Errorf("Didn't grow cache")
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}
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done = cache.ResizeCond(16)
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if !done || len(cache.entries) != 16 {
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t.Errorf("Didn't shrink cache")
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}
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}
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func TestBitmap(t *testing.T) {
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value := uint64(0xcdd58f1e035379c0)
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packet := make([]byte, 1)
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