curl 请求检测各阶段用时

发布时间：2025-09-16 02:12

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关联问题

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curl

字段解析

NAMELOOKUP：从开始计算，域名解析完成的耗时

CURLINFO_NAMELOOKUP_TIME. The time it took from the start until the name resolving was completed.

CONNECT：从开始计算，TCP建立完成的耗时

CURLINFO_CONNECT_TIME. The time it took from the start until the connect to the remote host (or proxy) was completed.

APPCONNECT：从开始计算，应用层（SSL，在TCP之上的应用层）连接/握手完成的耗时

CURLINFO_APPCONNECT_TIME. The time it took from the start until the SSL connect/handshake with the remote host was completed. (Added in in 7.19.0)

PRETRANSFER：从开始计算，准备开始传输数据的耗时

CURLINFO_PRETRANSFER_TIME. The time it took from the start until the file transfer is just about to begin. This includes all pre-transfer commands and negotiations that are specific to the particular protocol(s) involved.

STARTTRANSFER：从开始计算，开始传输数据的耗时（libcurl接收到第一个字节）

CURLINFO_STARTTRANSFER_TIME. The time it took from the start until the first byte is received by libcurl.

TOTAL：总的耗时

CURLINFO_TOTAL_TIME. Total time of the previous request.

REDIRECT：整个过程重定向的耗时，如果整个过程没有重定向，这个时间为0

CURLINFO_REDIRECT_TIME. The time it took for all redirection steps include name lookup, connect, pretransfer and transfer before final transaction was started. So, this is zero if no redirection took place.

命令使用

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curl -o /dev/null -s -w time_namelookup:"\t"%{time_namelookup}"\n"time_connect:"\t\t"%{time_connect}"\n"time_appconnect:"\t"%{time_appconnect}"\n"time_pretransfer:"\t"%{time_pretransfer}"\n"time_starttransfer:"\t"%{time_starttransfer}"\n"time_total:"\t\t"%{time_total}"\n"time_redirect:"\t\t"%{time_redirect}"\n" https://www.litblc.com

返回示例

代码语言：javascript

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time_namelookup:0.000 time_connect:0.032 time_appconnect:0.000 time_pretransfer:0.032 time_starttransfer:0.780 time_total:0.844 time_redirect:0.000 注：这里的单位为秒

文档参考 https://curl.haxx.se/docs/httpscripting.html

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curl 请求检测各阶段用时

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