# Manage internal data-model
The M4 chip isn't the latest Apple silicon, as it's still one generation behind what's available in the M5 iPad Pro and 14-inch MacBook Pro. However, with M4, the iPad Air is up to 30 percent faster than the iPad Air with M3. Apple highlights a 2.3X gain in performance over the M1 and says it has “4X faster 3D pro rendering,” along with features like ray tracing.。夫子对此有专业解读
，更多细节参见Line官方版本下载
NamespaceWhat it isolatesWhat the process seesPIDProcess IDsOwn process tree, starts at PID 1MountFilesystem mount pointsOwn mount table, can have different rootNetworkNetwork interfaces, routingOwn interfaces, IP addresses, portsUserUID/GID mappingCan be root inside, nobody outsideUTSHostnameOwn hostnameIPCSysV IPC, POSIX message queuesOwn shared memory, semaphoresCgroupCgroup root directoryOwn cgroup hierarchyTimeSystem clocks (monotonic, boot)Own system uptime and clock offsetsNamespaces are what Docker containers use. When you run a container, it gets its own PID namespace (cannot see host processes), its own mount namespace (own filesystem view), its own network namespace (own interfaces), and so on.。关于这个话题，safew官方版本下载提供了深入分析
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