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send multiple packets at once, if the pacing delay is very small

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This is an optimization to avoid waking of the run loop every couple of
microseconds.
This commit is contained in:
Marten Seemann 2018-01-08 10:03:26 +07:00
parent 5ef89733ae
commit 9ef3a47da5
9 changed files with 214 additions and 88 deletions
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5
internal/protocol/server_parameters.go
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@ -131,3 +131,8 @@ const NumCachedCertificates = 128
// 1. it reduces the framing overhead
// 2. it reduces the head-of-line blocking, when a packet is lost
const MinStreamFrameSize ByteCount = 128
// MinPacingDelay is the minimum duration that is used for packet pacing
// If the packet packing frequency is higher, multiple packets might be sent at once.
// Example: For a packet pacing delay of 20 microseconds, we would send 5 packets at once, wait for 100 microseconds, and so forth.
const MinPacingDelay time.Duration = 100 * time.Microsecond