In addition, the row format of value compression has a two-byte overhead per row.
此外，值压缩的行格式会为每一行占用两个字节。
Each object allocated on the GC heap has an 8-byte overhead (sync block + method table pointer).
每个在GC堆中分配的对象有一个8字节的头(同步块+方法表指针)。
The error is caused by the fact that there is an overhead of two bytes for varying length and a one-byte overhead for null.
造成这个错误的原因是，变化的长度占用2字节，null 占用 1 字节。
Overhead in memory is very small: You basically have a 4- byte overhead per interface (the vtable pointers in the object's instance data) plus 4 bytes for the reference counter.
内存开销非常小：基本上每个接口需要额外4个字节（对象实例数据里虚函数表指针），加上引用计数的4个字节。
Overhead in memory is very small: You basically have a 4- byte overhead per interface (the vtable pointers in the object's instance data) plus 4 bytes for the reference counter.
内存开销非常小：基本上每个接口需要额外4个字节（对象实例数据里虚函数表指针），加上引用计数的4个字节。
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