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Conference azur::mcc

Title:	DECmcc user notes file. Does not replace IPMT.
Notice:	Use IPMT for problems. Newsletter location in note 6187
Moderator:	TAEC::BEROUD

Created:	Mon Aug 21 1989
Last Modified:	Wed Jun 04 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	6497
Total number of notes:	27359

2227.0. "memory loss 1.2.4" by F18::ROBERT () Thu Jan 30 1992 11:32

    This monday I got DECmcc 1.2.4 up and running on a VAXstation 3100
    model 48, with 32MB of memeory. two RZ56's and a couple of internal
    disk drives.
    
    When I was running the older version 1.1 on this system, I usuallly
    had around 12,000 blocks of free memory. I am exporting circuit infor-
    mation on 9 nodes, every 5 hours. I am also exporting node, line and
    circuit information on 2 nodes, every 4 hr. 30 min.
    
    Let me state that when I was using 1.1, I was doing the same as above,
    except that I was exporting on 3 nodes, node, line and circuit.
    
    I am only doing 2 nodes, node, line and circuit, plus the other 9 nodes
    of circuit exporting now.
    
    Every day that I look at the free memeory, it is constantly eroding
    away. It is now down to 5247 free blocks out of 65536 total. I have
    all of my sysgen and authoruize parameters set to what you have
    specified.
    
    What is going on? Can someone shed some light as to why my memory is
    being eaten up?
    
    Thanks Dave
    
    I have very limited activity going on on the system.

T.R	Title	User	Personal Name	Date	Lines
2227.1	What is it that you are losing?	TOOK::MINTZ	Erik Mintz, DECmcc Development	`Thu Jan 30 1992 12:41`	15
	I'm not sure what it is that you are losing here. Is it disk space, or memory? Disk space you would be checking with "Show Device", and the output would be in blocks. Memory you would check with "Show Memory", and the output would be in bytes, or Mb. If you are losing memory, then we have a bug in the code somewhere. If you are losing disk space, it may simply be because when you record data, it is stored on the disk. -- Erik
2227.2		F18::ROBERT		`Thu Jan 30 1992 15:20`	269
	Disk space is fine. I have tons of it. The problem is memory loss. I logged out 2 window sessions and got back about 2000 pages. After getting DECmcc 1.2.4 going, and starting all of my exporting jobs, I did a show mem. I had 19078 free pages at the time, i.e. System Memory Resources on 27-JAN-1992 12:49:07.24 Physical Memory Usage (pages): Total Free In Use Modified Main Memory (32.00Mb) 65536 19078 43892 2566 Slot Usage (slots): Total Free Resident Swapped Process Entry Slots 90 63 27 0 Balance Set Slots 81 56 25 0 Fixed-Size Pool Areas (packets): Total Free In Use Size Small Packet (SRP) List 4100 3343 757 112 I/O Request Packet (IRP) List 750 355 395 176 Large Packet (LRP) List 44 33 11 1648 Dynamic Memory Usage (bytes): Total Free In Use Largest Nonpaged Dynamic Memory 900096 438720 461376 404160 Paged Dynamic Memory 1000448 578416 422032 574672 Paging File Usage (pages): Free Reservable Total DISK$PAGESWAP:[SYSEXE]SWAPFILE.SYS;1 13496 13496 13496 DISK$PAGESWAP:[SYSEXE]PAGEFILE.SYS;1 143245 77083 159992 Of the physical pages in use, 7971 pages are permanently allocated to VMS. Please note the time: $ m System Memory Resources on 27-JAN-1992 16:04:03.18 Physical Memory Usage (pages): Total Free In Use Modified Main Memory (32.00Mb) 65536 9847 53116 2573 Slot Usage (slots): Total Free Resident Swapped Process Entry Slots 90 64 26 0 Balance Set Slots 81 57 24 0 Fixed-Size Pool Areas (packets): Total Free In Use Size Small Packet (SRP) List 4100 3308 792 112 I/O Request Packet (IRP) List 750 338 412 176 Large Packet (LRP) List 44 34 10 1648 Dynamic Memory Usage (bytes): Total Free In Use Largest Nonpaged Dynamic Memory 900096 439968 460128 404720 Paged Dynamic Memory 1000448 578784 421664 574864 Paging File Usage (pages): Free Reservable Total DISK$PAGESWAP:[SYSEXE]SWAPFILE.SYS;1 13496 13496 13496 DISK$PAGESWAP:[SYSEXE]PAGEFILE.SYS;1 131175 61192 159992 Of the physical pages in use, 7971 pages are permanently allocated to VMS. Note time: $ m System Memory Resources on 28-JAN-1992 08:43:26.69 Physical Memory Usage (pages): Total Free In Use Modified Main Memory (32.00Mb) 65536 7822 55162 2552 Slot Usage (slots): Total Free Resident Swapped Process Entry Slots 90 64 26 0 Balance Set Slots 81 57 24 0 Fixed-Size Pool Areas (packets): Total Free In Use Size Small Packet (SRP) List 4100 3303 797 112 I/O Request Packet (IRP) List 750 337 413 176 Large Packet (LRP) List 44 33 11 1648 Dynamic Memory Usage (bytes): Total Free In Use Largest Nonpaged Dynamic Memory 900096 442512 457584 404720 Paged Dynamic Memory 1000448 578784 421664 574864 Paging File Usage (pages): Free Reservable Total DISK$PAGESWAP:[SYSEXE]SWAPFILE.SYS;1 13496 13496 13496 DISK$PAGESWAP:[SYSEXE]PAGEFILE.SYS;1 128799 55063 159992 Of the physical pages in use, 7971 pages are permanently allocated to VMS. $ m System Memory Resources on 28-JAN-1992 11:40:45.98 Physical Memory Usage (pages): Total Free In Use Modified Main Memory (32.00Mb) 65536 7645 55362 2529 Slot Usage (slots): Total Free Resident Swapped Process Entry Slots 90 64 26 0 Balance Set Slots 81 57 24 0 Fixed-Size Pool Areas (packets): Total Free In Use Size Small Packet (SRP) List 4100 3302 798 112 I/O Request Packet (IRP) List 750 337 413 176 Large Packet (LRP) List 44 34 10 1648 Dynamic Memory Usage (bytes): Total Free In Use Largest Nonpaged Dynamic Memory 900096 442720 457376 404720 Paged Dynamic Memory 1000448 578784 421664 574864 Paging File Usage (pages): Free Reservable Total DISK$PAGESWAP:[SYSEXE]SWAPFILE.SYS;1 13496 13496 13496 DISK$PAGESWAP:[SYSEXE]PAGEFILE.SYS;1 124661 53292 159992 Of the physical pages in use, 7971 pages are permanently allocated to VMS. $ m System Memory Resources on 29-JAN-1992 08:51:26.23 Physical Memory Usage (pages): Total Free In Use Modified Main Memory (32.00Mb) 65536 6685 56629 2222 Slot Usage (slots): Total Free Resident Swapped Process Entry Slots 90 64 26 0 Balance Set Slots 81 57 24 0 Fixed-Size Pool Areas (packets): Total Free In Use Size Small Packet (SRP) List 4100 3301 799 112 I/O Request Packet (IRP) List 750 335 415 176 Large Packet (LRP) List 44 34 10 1648 Dynamic Memory Usage (bytes): Total Free In Use Largest Nonpaged Dynamic Memory 900096 441568 458528 404720 Paged Dynamic Memory 1000448 578784 421664 574864 Paging File Usage (pages): Free Reservable Total DISK$PAGESWAP:[SYSEXE]SWAPFILE.SYS;1 13496 13496 13496 DISK$PAGESWAP:[SYSEXE]PAGEFILE.SYS;1 124100 53640 159992 Of the physical pages in use, 7971 pages are permanently allocated to VMS. $ m System Memory Resources on 30-JAN-1992 09:42:28.78 Physical Memory Usage (pages): Total Free In Use Modified Main Memory (32.00Mb) 65536 5490 57822 2224 Slot Usage (slots): Total Free Resident Swapped Process Entry Slots 90 64 26 0 Balance Set Slots 81 57 24 0 Fixed-Size Pool Areas (packets): Total Free In Use Size Small Packet (SRP) List 4100 3302 798 112 I/O Request Packet (IRP) List 750 338 412 176 Large Packet (LRP) List 44 33 11 1648 Dynamic Memory Usage (bytes): Total Free In Use Largest Nonpaged Dynamic Memory 900096 442720 457376 404720 Paged Dynamic Memory 1000448 578784 421664 574864 Paging File Usage (pages): Free Reservable Total DISK$PAGESWAP:[SYSEXE]SWAPFILE.SYS;1 13496 13496 13496 DISK$PAGESWAP:[SYSEXE]PAGEFILE.SYS;1 123941 53023 159992 Of the physical pages in use, 7971 pages are permanently allocated to VMS. I deleted 2 sessions on my system. This gave me back about 2000 pages. Tomorrow I will do a show mem when I get in. Thanks for the help. Dave
2227.3	QAR 2244	TOOK::MINTZ	Erik Mintz, DECmcc Development	`Thu Jan 30 1992 16:14`	11
	Thanks for the clarification. It was the use of "blocks" in the base note that confused me. This indeed looks like a serious memory leak. We have a team tracking down just such problems, and I have entered QAR 2244 in mcc_internal with your informationn. Thanks, -- Erik
2227.4		F18::ROBERT		`Fri Jan 31 1992 09:52`	46
	This is what I have left this morning. I am going to be attending NET U, so I am going to have to shut down DECmcc, or else my system will run out of memory while I am gone. System Memory Resources on 31-JAN-1992 08:50:46.93 Physical Memory Usage (pages): Total Free In Use Modified Main Memory (32.00Mb) 65536 4764 58439 2333 Slot Usage (slots): Total Free Resident Swapped Process Entry Slots 90 65 25 0 Balance Set Slots 81 58 23 0 Fixed-Size Pool Areas (packets): Total Free In Use Size Small Packet (SRP) List 4100 3311 789 112 I/O Request Packet (IRP) List 750 344 406 176 Large Packet (LRP) List 44 34 10 1648 Dynamic Memory Usage (bytes): Total Free In Use Largest Nonpaged Dynamic Memory 900096 446400 453696 404720 Paged Dynamic Memory 1000448 579216 421232 574864 Paging File Usage (pages): Free Reservable Total DISK$PAGESWAP:[SYSEXE]SWAPFILE.SYS;1 13496 13496 13496 DISK$PAGESWAP:[SYSEXE]PAGEFILE.SYS;1 123167 52897 159992 Of the physical pages in use, 7971 pages are permanently allocated to VMS. Thanks Dave
2227.5	QAR answer	TOOK::MINTZ	Erik Mintz, dtn 226-5033	`Mon Jun 08 1992 15:32`	7
	The answer to QAR 02244 has arrived. We have spent a great deal of time and effort on memory leak containment in the past several months. As soon as our system is able to meet exit criteria it will be judged adequate in the memory leak/clobber department to be hipped as a product.