Hardware: Intel CPU, 4 Cores @ 3.2 GHz
Python: CPython v3.10

nr = new results on this machine
Rounds per test: 10000
=====================================
>>> Packet parsing (Ethernet + IP + UDP + DNS): Search UDP port
Time diff: 0.1409761905670166s
nr = 70933 p/s
>>> Packet parsing (Ethernet + IP + TCP + HTTP): Search TCP port
Time diff: 0.3157649040222168s
nr = 31669 p/s
>>> Packet parsing (Ethernet + IP + TCP + HTTP): Reading all header
Time diff: 0.5989120006561279s
nr = 16696 p/s
>>> Parsing first layer (IP + ICMP)
Time diff: 0.014587163925170898s
nr = 685534 p/s
>>> Creating/direct assigning (IP only header)
Time diff: 0.02884364128112793s
nr = 346696 p/s
>>> bin() without change (IP)
Time diff: 0.013646364212036133s
nr = 732795 p/s
>>> Output with change/checksum recalculation (IP)
Time diff: 0.07719659805297852s
nr = 129539 p/s
>>> Basic/first layer parsing (Ethernet + IP + TCP + HTTP)
Time diff: 0.019113540649414062s
nr = 523189 p/s
>>> Changing Triggerlist element value (Ethernet + IP + TCP + HTTP)
Time diff: 0.017654895782470703s
nr = 566415 p/s
>>> Changing dynamic field (Ethernet + IP + TCP + HTTP)
Time diff: 0.006037473678588867s
nr = 1656321 p/s
>>> Direct assigning and concatination (Ethernet + IP + TCP + HTTP)
Time diff: 0.2050457000732422s
nr = 48769 p/s
.>>> Performance test pypacker vs. dpkt vs. scapy
Comparing pypacker, dpkt and scapy performance (parsing Ethernet + IP + TCP + HTTP)
nr = new results on this machine
Rounds per test: 10000
>> Testing pypacker parsing speed
nr = 194382 p/s
>> Testing dpkt parsing speed
Could not execute dpkt tests: ModuleNotFoundError("No module named 'dpkt'")
>> Testing scapy parsing speed
nr = 2775 p/s

import struct, copyreg
def pickle_struct(s):
	return struct.Struct, (s.format,)

copyreg.pickle(struct.Struct, pickle_struct)

pkt_eth, pkt_ip, pkt_tcp, pkt_http = pkt[
 	None,
	(None, lambda b: b.__class__ in [ip.IP, ip6.IP6]),
	(tcp.TCP, lambda c: c.dport==80),
	http.HTTP
]
...

pkt = Ethernet() + IP() + TCP()
# これにより全レイヤーが解析される
packet_print = "%s" % pkt

packet_found = pkt[Telnet]
# 代替: 複数値のインデックス表記を使用。これは一致しないレイヤーで解析を停止します:
packet_found = pkt[Ethernet,IP,TCP,Telnet]

pkt = ip.IP(src_s="1.2.3.4", dst_s="1.2.3.5") + tcp.TCP()
# IPおよびTCPのチェックサム計算（およびその他の更新）を無効にする（このパケットインスタンスのみ）
pkt.sum_au_active = False
pkt.tcp.sum_au_active = False
bts = pkt.bin(update_auto_fields=False)

sysctl -w net.core.rmem_max=12582912
sysctl -w net.core.rmem_default=12582912
sysctl -w net.core.wmem_max=12582912
sysctl -w net.core.wmem_default=12582912
sysctl -w net.core.optmem_max=2048000
sysctl -w net.core.netdev_max_backlog=5000
sysctl -w net.unix.max_dgram_qlen=1000
sysctl -w net.ipv4.tcp_rmem="10240 87380 12582912"
sysctl -w net.ipv4.tcp_wmem="10240 87380 12582912"
sysctl -w net.ipv4.tcp_mem="21228 87380 12582912"
sysctl -w net.ipv4.udp_mem="21228 87380 12582912"
sysctl -w net.ipv4.tcp_window_scaling=1
sysctl -w net.ipv4.tcp_timestamps=1
sysctl -w net.ipv4.tcp_sack=1