1.SH 2Process Structure 3.PP 4The Plan 9 file system server is made from 5an ancient version of the Plan 9 kernel. 6The kernel contains process control, 7synchronization, 8locks, 9and some memory 10allocation. 11The kernel has no user processes or 12virtual memory. 13.PP 14The structure of the file system server 15is a set of kernel processes 16synchronizing mostly through message passing. 17In 18.I fs64 19there are 27 processes of 11 types: 20.KS 21.TS 22center ; 23c l c 24n lf(CW) l . 25number name function 26_ 2715 srv Main file system server processes 281 rah Block read-ahead processes 291 scp Sync process 301 wcp WORM copy process 311 con Console process 321 ilo IL protocol process 331 ilt IL timer process 342 ethi Ethernet input process 352 etho Ethernet output process 361 flo Floppy disk process 371 snt sntp clock-synchronisation process 38.TE 39.KE 40