| Title: | VAX and Alpha VMS |
| Notice: | This is a new VMSnotes, please read note 2.1 |
| Moderator: | VAXAXP::BERNARDO |
| Created: | Wed Jan 22 1997 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 703 |
| Total number of notes: | 3722 |
VMS 6.2
A customer has ported his application to alpha and
is seeing intermittent hangs which affect other
processes in his application. The hang occurs in
ppl$create_application. Subsequent attempts to call
this routine hang too. I don't have much to go on
other than the following information suppplied by
the customer. My basic question is what is the
significance of the ppl$num_app lock which appears
to be the culprit in locking up the other proceses.
See the bottom of the log for the other processes
that are locked out.
Process index: 0033 Name: Extended PID: 38000833
-----------------------------------------------------
Process status: 00040001 RES,PHDRES
Required capabilities: 0000000C QUORUM,RUN
PCB address 84AC89C0 JIB address 84AC8C40
PHD address 9A180000 Swapfile disk address 00000000
Master internal PID 00010033 Subprocess count 1
Internal PID 00010033 Creator internal PID 00000000
Extended PID 38000833 Creator extended PID 00000000
State HIB Termination mailbox 0043
Previous CPU Id 00000004 Current CPU Id 00000004
Previous ASNSEQ 00000000000030F9 Previous ASN 0000000000000048
Current priority 9 # of threads 0000000000000000
Initial process priority 4 Delete pending count 0
Base priority 4 AST's active NONE
UIC [00001,000004] AST's remaining 248
Mutex count 0 Buffered I/O count/limit 1000/1000
Waiting EF cluster 0 Direct I/O count/limit 1000/1000
Abs time of last event 02795BB4 BUFIO byte count/limit 597760/597760
Event flag wait mask 7FFFFFFF # open files allowed left 23992
Swapped copy of LEFC0 00000000 Timer entries allowed left 17
Swapped copy of LEFC1 00000000 Active page table count 0
Global cluster 2 pointer 84C04700 Process WS page count 119
Global cluster 3 pointer 846E2C80 Global WS page count 68
SDA>
SDA> sh proc/lock
Lock data:
Lock id: 02001325 PID: 00010033 Flags: VALBLK
Par. id: 00000000 SUBLCKs: 0
LKB: 8475B140 BLKAST: 00000000
PRIORTY: 0000
Granted at PW 00000000-FFFFFFFF
Resource: 5F4D554E 244C5050 PPL$NUM_ Status: ASYNC
Length 11 00000000 00505041 APP.....
User mode 00000000 00000000 ........
Group 001 00000000 00000000 ........
Process copy of lock 2500D4A1 on system 000100BE
[22;1f
Press RETURN for more.
SDA>
[1;1f[J
Process index: 0033 Name: Extended PID: 38000833
-----------------------------------------------------
Lock data:
Lock id: 7400117B PID: 00010033 Flags: VALBLK CONVERT NOQUEUE
Par. id: 00000000 SUBLCKs: 0
LKB: 84ABB500 BLKAST: 00000000
PRIORTY: 0000
Granted at CR 00000000-FFFFFFFF
Resource: 5F505041 244C5050 PPL$APP_ Status:
Length 17 33383030 3038335F _3800083
User mode 00000000 00000033 3.......
Group 001 00000000 00000000 ........
Local copy
[22;1f
Press RETURN for more.
SDA>
[1;1f[J
Process index: 0033 Name: Extended PID: 38000833
-----------------------------------------------------
Lock data:
Lock id: 2A00C8C7 PID: 00010033 Flags: VALBLK CONVERT
Par. id: 00000000 SUBLCKs: 0
LKB: 851D82C0 BLKAST: 00000000
PRIORTY: 0000
Granted at NL 00000000-FFFFFFFF
Resource: 454D414E 244C5050 PPL$NAME Status:
Length 18 30303030 30305F5F __000000
User mode 00000000 00003030 00......
Group 001 00000000 00000000 ........
Local copy
[22;1f
Press RETURN for more.
SDA>
[1;1f[J
Process index: 0033 Name: Extended PID: 38000833
-----------------------------------------------------
Lock data:
Lock id: 1300EBB7 PID: 00010033 Flags: VALBLK CONVERT
Par. id: 00000000 SUBLCKs: 0
LKB: 8526FCC0 BLKAST: 00000000
PRIORTY: 0000
Granted at NL 00000000-FFFFFFFF
Resource: 5F504F54 244C5050 PPL$TOP_ Status:
Length 26 30303030 3030305F _0000000
User mode 30303030 30305F30 0_000000
Group 001 00000000 00003030 00......
Local copy
[22;1f
Press RETURN for more.
SDA>
[1;1f[J
Process index: 0033 Name: Extended PID: 38000833
-----------------------------------------------------
Lock data:
Lock id: 7B002078 PID: 00010033 Flags: NODLCKB
Par. id: 00000000 SUBLCKs: 0
LKB: 84DAE0C0 BLKAST: 00073CB0
PRIORTY: 0000
Granted at PR 00000000-FFFFFFFF
Resource: 4C4C4554 244C5050 PPL$TELL Status:
Length 19 30303030 3030305F _0000000
User mode 00000000 00305F30 0_0.....
Group 001 00000000 00000000 ........
Local copy
[22;1f
Press RETURN for more.
SDA>
[1;1f[J
Process index: 0033 Name: Extended PID: 38000833
-----------------------------------------------------
Lock data:
Lock id: 2100EBBD PID: 00010033 Flags: VALBLK CONVERT NODLCKB
Par. id: 00000000 SUBLCKs: 0
LKB: 85C814C0 BLKAST: 00000000
PRIORTY: 0000
Granted at EX 00000000-FFFFFFFF
Resource: 56494C41 244C5050 PPL$ALIV Status:
Length 20 30303030 30305F45 E_000000
User mode 00000000 305F3030 00_0....
Group 001 00000000 00000000 ........
Local copy
!!!! Here are the other processes waiting for the num_appl lock.
.SDA> sh proc/lock/ind=34
Process index: 0034 Name: Extended PID: 38000834
-----------------------------------------------------
Lock data:
Lock id: 0600464F PID: 00010034 Flags: VALBLK
Par. id: 00000000 SUBLCKs: 0
LKB: 8561E980 BLKAST: 00000000
PRIORTY: 0000 RQSEQNM: 0047
Waiting for PW 00000000-FFFFFFFF
Resource: 5F4D554E 244C5050 PPL$NUM_ Status: ASYNC
Length 11 00000000 00505041 APP.....
User mode 00000000 00000000 ........
Group 001 00000000 00000000 ........
Process copy of lock 7E010203 on system 000100BE
SDA>
.SDA> sh proc/lock/ind=35
[1;1f[J
Process index: 0035 Name: Extended PID: 38000835
-----------------------------------------------------
Lock data:
Lock id: 2D0038CF PID: 00010035 Flags: VALBLK
Par. id: 00000000 SUBLCKs: 0
LKB: 8528BA00 BLKAST: 00000000
PRIORTY: 0000 RQSEQNM: 003C
Waiting for PW 00000000-FFFFFFFF
Resource: 5F4D554E 244C5050 PPL$NUM_ Status: ASYNC
Length 11 00000000 00505041 APP.....
User mode 00000000 00000000 ........
Group 001 00000000 00000000 ........
Process copy of lock 530101F8 on system 000100BE
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 131.1 | PPL has been retired... | LOWFAT::DIETER | Tue Feb 04 1997 09:34 | 16 | |
PPL (both VAX and Alpha) was retired as of V7.1. For at least the past year, a business decision has been in effect such that no problems have been fixed in PPL. There are known problems in the Alpha version of PPL such that it does not work at all. As part of retiring this product, the source code is available to the general public (that is, both internally and externally) for continued use and modification. Savesets are available from: BULOVA::DISK$SYSKITS:[PUBLIC]*PPL*.* Any further questions should be directed at Rick Raymond (STAR::RRAYMOND) and CC Ron STAR::HIGGINS and myself (@ STAR::DIETER). Mary | |||||
| 131.2 | AUSS::GARSON | DECcharity Program Office | Tue Feb 04 1997 20:52 | 5 | |
re .1
Is there a replacement product?
Is there some reason why the product is no longer needed?
| |||||
| 131.3 | QUARK::LIONEL | Free advice is worth every cent | Tue Feb 04 1997 20:57 | 3 | |
DECthreads is the replacement.
Steve
| |||||
| 131.4 | 64947::DIETER | Wed Feb 05 1997 09:49 | 11 | ||
Yes, as Steve mentioned, DECthreads is the replacement. Be aware however that there is not a 1-1 functionality mapping from PPL to DECthreads, so they will probably need to change their code/algorithms a bit when converting to DECthreads. Or, as I mentioned in my previous reply, they are welcome to the Alpha source code for PPL to do with as they wish (that is, fix the bugs and maintain for their own use for all eternity). Mary | |||||