Reasons

From OpenMosixWiki

There are a couple of reasons why applications don't migrate in openMosix

Look at include/hpc/hpctask.h for a better understanding of all reasons to not migrate. not very exhaustive but helful. (start at #define STAYFORMONKEY) As Tab described on the mailinglist :

1. define DSTAYFORMONKEY 0x00000001 / using monkey vnode /
2. define DSTAYFORDEV 0x00000002 / mapping a device /
3. define DSTAYFOR86 0x00000004 / running in 86 mode /
4. define DSTAYITSDAEMON 0x00000008 / daemon process /
5. define DSTAYFORPRIV 0x00000010 / privilleged inst. access (in/out) /
6. define DSTAYFORMLOCK 0x00000020 / has locked memory /
7. define DSTAYFORCLONE 0x00000040 / shared VM, eliminate this once DSM/
8. define DSTAYFORRT 0x00000080 / Real-Time scheduling /
9. define DSTAYFORIOPL 0x00000100 / direct I/O permission /
10. define DSTAYITSINIT 0x00000200 / init process /
11. define DSTAYFORKIOBUF 0x00000400 / using kiobuf /
12. define DSTAY_OTHER1 0x01000000 / external reason for stay (1) /
13. define DSTAY_OTHER2 0x02000000 / external reason for stay (2) /
14. define DSTAY_OTHER3 0x04000000 / external reason for stay (3) /
15. define DSTAY_OTHER4 0x08000000 / external reason for stay (4) /
16. define DNOMIGRATE 0x80000000 / user requested no auto-migrations /