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      Latest reply on May 17, 2019 12:43 AM by eskimo
      shanksli Level 1 Level 1 (0 points)
      shanksli May 11, 2019 2:25 AM

        The ALOG sends the log to logd through socket on android,Does os_log also send logs to logd by socket?

        • Re: how did os_log send log to logd
          eskimo Apple Staff Apple Staff (12,475 points)
          eskimo May 13, 2019 12:43 AM (in response to shanksli)

          The exact mechanism used by os_log is not documented and is subject to change over time.  However, it’s certainly not as simple as a UNIX domain socket to a daemon, à la the traditional syslog mechanism.  The team discussed some of the implementation details in WWDC 2016 Session 721 Unified Logging and Activity Tracing.

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            • Re: how did os_log send log to logd
              shanksli Level 1 Level 1 (0 points)
              shanksli May 16, 2019 6:03 AM (in response to eskimo)

              tks for your reply.

              Since i found that android will lose logs when the amount of log is large due to the socket buffer problem. i am curious about if the apple log system has such a problem or not?

                • Re: how did os_log send log to logd
                  eskimo Apple Staff Apple Staff (12,475 points)
                  eskimo May 17, 2019 12:43 AM (in response to shanksli)

                  OSLog is designed to handle very high log volumes, but that isn’t a guarantee that you can log without consequences.  The WWDC talk I mentioned previous should give you some insight into the trade-off involves.

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                  Apple Developer Relations, Developer Technical Support, Core OS/Hardware
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