Latency Test Results

Onload User Guide (UG1586)

Document ID

UG1586

Release Date

2023-07-31

Revision

1.2 English

The table below shows the results of running the tests described in Latency Tests. The times given are ½ RTT latency for a 32 byte message

Table 1. ½ RTT Latency for a 32 Byte Message
Acceleration	Protocol	25 Gb	10 Gb	Notes	Description
ef_vi	UDP	750 ns	819 ns	eflatency	Layer 2 ef_vi Latency
TCPDirect	UDP	783 ns	864 ns	zfudppingpong	TCPDirect Latency
	UDP	968 ns	1022 ns	No CTPIO	Latency without CTPIO
	TCP	795 ns	870 ns	zftcppingpong	TCPDirect Latency
Onload	UDP	1034 ns	1107 ns	netperf	Onload Latency with netperf
	UDP	1022 ns	1095 ns	sfnt-pingpong	Onload Latency with sfnt-pingpong
	TCP	1032 ns	1119 ns	netperf	Onload Latency with netperf
	TCP	1025 ns	1110 ns	sfnt-pingpong	Onload Latency with sfnt-pingpong
Kernel	UDP	2658 ns	2750 ns	sfnt-pingpong	Kernel Latency
Kernel	TCP	3124 ns	3257 ns	sfnt-pingpong	Kernel Latency

These tests have also been repeated with different payloads, to generate the graphs in Latency against Payload.