试图理解为什么codeigniter应用程序上的curl调用很慢
前面的说明：我是一名Windows开发人员，请容忍我，因为这似乎是一个Linux问题 我们在PHP应用程序（我相信是用codeigniter构建的）方面遇到了一些问题。该应用程序托管在Ubuntun 16.04服务器（Apache）上，我认为它使用的是PHP7.4 问题：返回浏览器显示的html的控制器调用了两个web服务（托管在同一网络上的服务器上），这些调用速度很慢（每个调用都需要超过1秒的时间完成） 我们注意到了这一点，因为我们在两台服务器上都安装并启用了XDebug。对于我们的测试场景（需要加载2或3页），我们最终得到以下结果：试图理解为什么codeigniter应用程序上的curl调用很慢,codeigniter,ubuntu,curl,tcp,wireshark,Codeigniter,Ubuntu,Curl,Tcp,Wireshark,前面的说明：我是一名Windows开发人员，请容忍我，因为这似乎是一个Linux问题 我们在PHP应用程序（我相信是用codeigniter构建的）方面遇到了一些问题。该应用程序托管在Ubuntun 16.04服务器（Apache）上，我认为它使用的是PHP7.4 问题：返回浏览器显示的html的控制器调用了两个web服务（托管在同一网络上的服务器上），这些调用速度很慢（每个调用都需要超过1秒的时间完成） 我们注意到了这一点，因为我们在两台服务器上都安装并启用了XDebug。对于我们的测试场景（
Frame 116: 470 bytes on wire (3760 bits), 470 bytes captured (3760 bits)
Encapsulation type: Ethernet (1)
Arrival Time: Jul 7, 2020 15:46:23.036999000 GMT Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1594133183.036999000 seconds
[Time delta from previous captured frame: 0.000405000 seconds]
[Time delta from previous displayed frame: 0.000405000 seconds]
[Time since reference or first frame: 3.854565000 seconds]
Frame Number: 116
Frame Length: 470 bytes (3760 bits)
Capture Length: 470 bytes (3760 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:tcp:tls]
[Coloring Rule Name: TCP]
[Coloring Rule String: tcp]
Ethernet II, Src: Microsof_15:5a:5e (00:15:5d:15:5a:5e), Dst: Fortinet_09:03:22 (00:09:0f:09:03:22)
Destination: Fortinet_09:03:22 (00:09:0f:09:03:22)
Address: Fortinet_09:03:22 (00:09:0f:09:03:22)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Source: Microsof_15:5a:5e (00:15:5d:15:5a:5e)
Address: Microsof_15:5a:5e (00:15:5d:15:5a:5e)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 10.50.100.28, Dst: 10.50.110.100
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 456
Identification: 0x459c (17820)
Flags: 0x4000, Don't fragment
0... .... .... .... = Reserved bit: Not set
.1.. .... .... .... = Don't fragment: Set
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 64
Protocol: TCP (6)
Header checksum: 0x0cb0 [validation disabled]
[Header checksum status: Unverified]
Source: 10.50.100.28
Destination: 10.50.110.100
Transmission Control Protocol, Src Port: 34588, Dst Port: 443, Seq: 644, Ack: 5359, Len: 404
Source Port: 34588
Destination Port: 443
[Stream index: 5]
[TCP Segment Len: 404]
Sequence number: 644 (relative sequence number)
[Next sequence number: 1048 (relative sequence number)]
Acknowledgment number: 5359 (relative ack number)
1000 .... = Header Length: 32 bytes (8)
Flags: 0x018 (PSH, ACK)
000. .... .... = Reserved: Not set
...0 .... .... = Nonce: Not set
.... 0... .... = Congestion Window Reduced (CWR): Not set
.... .0.. .... = ECN-Echo: Not set
.... ..0. .... = Urgent: Not set
.... ...1 .... = Acknowledgment: Set
.... .... 1... = Push: Set
.... .... .0.. = Reset: Not set
.... .... ..0. = Syn: Not set
.... .... ...0 = Fin: Not set
[TCP Flags: ·······AP···]
Window size value: 319
[Calculated window size: 40832]
[Window size scaling factor: 128]
Checksum: 0x8850 [unverified]
[Checksum Status: Unverified]
Urgent pointer: 0
Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
TCP Option - No-Operation (NOP)
Kind: No-Operation (1)
TCP Option - No-Operation (NOP)
Kind: No-Operation (1)
TCP Option - Timestamps: TSval 1446266633, TSecr 1807771224
Kind: Time Stamp Option (8)
Length: 10
Timestamp value: 1446266633
Timestamp echo reply: 1807771224
[SEQ/ACK analysis]
[This is an ACK to the segment in frame: 115]
[The RTT to ACK the segment was: 0.000405000 seconds]
[iRTT: 0.000474000 seconds]
[Bytes in flight: 404]
[Bytes sent since last PSH flag: 404]
[Timestamps]
[Time since first frame in this TCP stream: 0.010560000 seconds]
[Time since previous frame in this TCP stream: 0.000405000 seconds]
TCP payload (404 bytes)
Transport Layer Security
TLSv1.2 Record Layer: Application Data Protocol: http-over-tls
Content Type: Application Data (23)
Version: TLS 1.2 (0x0303)
Length: 399
Encrypted Application Data: 6611c266b7d32e17367b99607d0a0607f61149d15bcb135d…