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生成 pdf 时会消耗大约 4MB 的内存,应用程序堆大小也在增加,生成 pdf 后堆大小保持不变,如果再次尝试生成 pdf,堆大小会进一步增加。
生成pdf后是否可以让堆大小减小,4Mb的内存消耗是否合理?