None. Solaris has a monolithic kernel.
by message passing
Micro kernel's have more fun. Where layered models tend to have drinking problems
Microkernel I Smaller Than A Nanokernel
Linux is a monolithic kernel. Some operating systems with a microkernel use Linux as a process for providing drivers, but this is irrelevant to mainstream Linux.
Because the communication between different parts of the system is more complex in a microkernel.
suffer from performance decreases due to increased system function overhead. Consider the history of Windows NT. The first release had a layered microkernel organization. However, this version delivered low performance compared with that of Windows 95. Windows NT 4.0 partially redressed the performance problem by moving layers from user space to kernel space and integrating them more closely. By the time Windows XP was designed, its architecture was more monolithic than microkernel.
Solaris 10.
mach
Solaris - magazine - was created in 1974.
Solaris - novel - was created in 1961.
Solaris Mobile was created in 2008.
Don Solaris was created in 808.