在fork中调用curl命令导致web获取资源树卡顿，导致web显示慢

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问题：web界面获取组件信息，一直在转圈3~5s之后才显示出来信息

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定位原因：调用curl命令来获取智能网卡温度，导致web界面卡顿
流程：调用skynet fork线程去获取智能网卡温度，获取方式是通过curl命令curl.easy_perform调用redfish url来获取智能网卡温度；

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问题一：调用skynet fork执行获取智能网卡温度，获取智能网卡温度流程会有3~5s卡顿，为什么会影响属性的获取，难道会影响RPC调用？应该如何解决这个问题
问题二：获取智能网卡温度需要使用curl命令，发现curl.easy_perform是串行阻塞的，是否有其他方式解决？

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1、调用阻塞性API的C库会导致进程下的资源树访问阻塞、组件心跳心跳丢失的情况。
2、需要使用框架提供的worker库，创建worker线程，将阻塞操作在worker线程中执行。
参考指导：worker_core 后台工作线程库 | openUBMC

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使用worker_core来执行获取智能网卡温度curl动作之后，还是出现属性获取失败，web卡顿问题：
以下为使用worker获取不同组件的温度，3s超时一次，循环获取：
2000-02-25 16:06:42.430477 unknown_service ERROR: worker: call_redfish, uri=/redfish/v1/Chassis/1/Sensors/CPU_Temp, err=Timeout was reached
2000-02-25 16:06:42.430678 unknown_service ERROR: worker: call_redfish url: /redfish/v1/Chassis/1/Sensors/CPU_Temp, g_count=15
2000-02-25 16:06:42.430824 unknown_service ERROR: worker: call_redfish url: /redfish/v1/Chassis/1/Sensors/CPU_Temp, error: Timeout was reached
2000-02-25 16:06:42.430964 unknown_service ERROR: worker: call_redfish1111-0, curl_uri=https://169.254.15.20/redfish/v1/Chassis/1/Sensors/M2Zone_Temp
2000-02-25 16:06:45.550750 unknown_service ERROR: worker: call_redfish, uri=/redfish/v1/Chassis/1/Sensors/M2Zone_Temp, err=Timeout was reached
2000-02-25 16:06:45.550966 unknown_service ERROR: worker: call_redfish url: /redfish/v1/Chassis/1/Sensors/CPU_Temp, g_count=16
2000-02-25 16:06:45.551113 unknown_service ERROR: worker: call_redfish url: /redfish/v1/Chassis/1/Sensors/M2Zone_Temp, error: Timeout was reached
2000-02-25 16:06:45.551264 unknown_service ERROR: worker: call_redfish1111-0, curl_uri=https://169.254.15.20/redfish/v1/Chassis/1/Sensors/NIC_OPT0_Temp
2000-02-25 16:06:48.673682 unknown_service ERROR: worker: call_redfish, uri=/redfish/v1/Chassis/1/Sensors/NIC_OPT0_Temp, err=Timeout was reached
2000-02-25 16:06:48.674062 unknown_service ERROR: worker: call_redfish url: /redfish/v1/Chassis/1/Sensors/CPU_Temp, g_count=17
2000-02-25 16:06:48.674235 unknown_service ERROR: worker: call_redfish url: /redfish/v1/Chassis/1/Sensors/NIC_OPT0_Temp, error: Timeout was reached
2000-02-25 16:06:48.674387 unknown_service ERROR: worker: call_redfish1111-0, curl_uri=https://169.254.15.20/redfish/v1/Chassis/1/Sensors/FPGA_Temp
2000-02-25 16:06:51.790993 unknown_service ERROR: worker: call_redfish, uri=/redfish/v1/Chassis/1/Sensors/FPGA_Temp, err=Timeout was reached
2000-02-25 16:06:51.791344 unknown_service ERROR: worker: call_redfish url: /redfish/v1/Chassis/1/Sensors/CPU_Temp, g_count=18
2000-02-25 16:06:51.792173 unknown_service ERROR: worker: call_redfish url: /redfish/v1/Chassis/1/Sensors/FPGA_Temp, error: Timeout was reached
2000-02-25 16:06:51.792845 unknown_service ERROR: worker: call_redfish1111-0, curl_uri=https://169.254.15.20/redfish/v1/Chassis/1/Sensors/NIC_OPT1_Temp
按道理已经在worker创建线程执行温度获取，不影响DPUCard属性的获取，但是出现了：
% lsprop DPUCard_1_0101
org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

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已解决，local w = worker.new(0)需要定义为全局变量