In this example the MUX wait entry is for a physical address of a RAMSEM. A physical address would be used where the RAMSEM is in instance data - that makes it unique among RAMSEMs providing the RAMSEM is not swappable.
In this example the waiting slot is 1b
>> Mux table entry for slot 1b, type=3 (physical RAMSEM) >> The physical address of the RAMSEM is %%00f1a6da >> We need to determine the owner of this address. # db muxtable+(9*e) l9 0400:0000493c be 48 1b 00 03 da a6 f1-00 >H...Z&q. >> Display the page frame structure for frame 00f1a: # .mp f1a ffe24538 InUse: pVP=ff4076ce RefCnt=0003 Flg=0 ll=01 sl=00 Blk=0006a Frame=00f1a >> Now display the virtual page structure to see who has backed this >> frame: # .mv %ff4076ce VPI=057b pVP=ff4076ce SOW Frame=0f1a Flg=9d0 HobPg=0000 Hob=03df Ref=011 >> Now we have the hob and page offset into the hob. Display the >> linear address of the Hob using .MOC, add the page offset and >> the byte index from the physical address to obtain the >> virtual address of the RAMSEM # .moc 3df *har par cpg va flg next prev link hash hob hal 0382 %fef23d36 00000010 %1a260000 379 0381 0383 0000 0000 03df 0000 hco=00f37 hob har hobnxt flgs own hmte sown,cnt lt st xf 03df 0382 0000 082c 03da 03da 0000 00 01 00 00 shared e:pmwin.dll hco=0f37 pco=ffe78c2e hconext=00e8b hptda=0873 f=16 pid=00e0 e:cmd.exe >> RAMSEM is at %1a260000+00000000+6da >> RAMSEM is owned by pmwin.dll # ln %1a2606da No Symbols Found >> LN doesn't work so thunk to a selector:offset and try again >> cheat by looking up the selector assigned to pmwin in its >> segment table: # .lmo 3da hmte=03da pmte=%fdf21c14 mflags=0498b194 e:\os2\dll\pmwin.dll obj vsize vbase flags ipagemap cpagemap hob sel 0001 0000f6f8 1a1b0000 80005025 00000001 00000010 03e9 d0df r-x shr alias conf 0002 0000c24e 1a1c0000 80005025 00000011 0000000d 03e8 d0e7 r-x shr alias conf 0003 00008c84 1a1d0000 80005025 0000001e 00000009 03e7 d0ef r-x shr alias conf 0004 0000b6e2 1a1e0000 80005025 00000027 0000000c 03e6 d0f7 r-x shr alias conf 0005 0000eb10 1a1f0000 80005025 00000033 0000000f 03e5 d0ff r-x shr alias conf 0006 00006292 1a200000 8000d025 00000042 00000007 03e4 d106 r-x shr alias conf iopl 0007 00003738 1a210000 8000d025 00000049 00000004 03e3 d10e r-x shr alias conf iopl 0008 000010c5 1a220000 80009025 0000004d 00000002 03e2 d116 r-x shr alias iopl 0009 000124d4 1a230000 80003025 0000004f 00000013 03e1 d11f r-x shr alias big 000a 000070ca 1a250000 80001025 00000062 00000008 03e0 d12f r-x shr alias 000b 00000ada 1a260000 80001063 0000006a 00000001 03df d137 rw- shr prel alias 000c 00001478 1a270000 80003063 0000006b 00000002 03de d13f rw- shr prel alias big 000d 000023f8 1a280000 80001063 0000006d 00000003 03dd d147 rw- shr prel alias 000e 00006444 1a290000 80001063 00000070 00000002 03dc d14f rw- shr prel alias 000f 00000142 1a2a0000 80001063 00000072 00000001 03db d157 rw- shr prel alias 0010 00000018 1a2b0000 80002063 00000073 00000001 03d9 d15f rw- shr prel big 0011 000003b8 16100000 80002079 00000074 00000001 051e b087 r-- rsrc disc shr prel big 0012 00000dcc 161c0000 80002069 00000075 00000001 0509 b0e7 r-- rsrc shr prel big 0013 0000ffbc 16210000 80002029 00000076 00000010 0504 b10f r-- rsrc shr big 0014 000002f0 00000000 00002039 00000086 00000001 0000 0000 r-- rsrc disc shr big 0015 00003524 16120000 80002029 00000087 00000004 051b b097 r-- rsrc shr big # ln d137:6dad137:000006da PMWIN MSGQUEUESEM1