Hi All,

We migrated our Netware servers to the virtual environment late last year. All is well apart from the intermittent Cache memory issue on our Groupwise server.

When this happens, Groupwise is noticeably slower. Occasionally, the server will right itself and restore services to normal and other times a reboot is required.

The server is a Netware 6.5 sp8 server running Groupwise 7 sp3 and GW Messenger 2.0.7 with 4Gb ram allocated. All our virtual servers run on an IBM bladeserver.

Yesterday Groupwise was noticeably slower and looking at the server console the Cache issue warning had appeared late last week.

Looking through the forum suggest that I consider re-configuring memory allocations using memcalc, but it didn't work on the server, possibly because of the virtual environment.

We ran seg.nlm overnight and about midnight the cache memory issue occurred again.

I tried posting earlier with the segstats.txt, seg.csv and config.txt attached, but the server rejected it.

So I have copied the segstats below.

Hopefully this is enough, but if the information in the other files is required I can send them through.

Thanks for your assistance.

Alan

*** Memory Pool Configuration for : LAW-MAIL
Time and date : 11:26:27 AM 05/26/2010
Server version : NetWare 6.5 Support Pack 8
Server uptime : 13d 01h 06m 07s
SEG.NLM uptime : 0d 21h 55m 43s
SEG.NLM version : v2.00.17

Original Memory : 4,293,455,872 bytes (4.00 GB)
ESM Memory : 1,073,741,824 bytes (1.00 GB)
0xFFFFFFFF --------------------------------------------------------------
| Kernel Reserved Space |
| |
| Size : 180,355,071 bytes (172.0 MB) |
| |
0xF5400000 --------------------------------------------------------------
| User Address Space (L!=P) |
| |
| User Pool Size : 884,998,144 bytes (844.0 MB) |
| High Water Mark : 566,394,880 bytes (540.2 MB) |
| PM Pages In Use : 15,802,368 bytes (15.1 MB) |
| |
0xC0800000 --------------------------------------------------------------
| Virtual Memory Address Space (L!=P) |
| |
| VM Address Space : 2,155,872,256 bytes (2.01 GB) |
| Available : 1,222,762,496 bytes (1.14 GB) |
| Total VM Pages : 1,206,951,936 bytes (1.12 GB) |
| Free Clean VM : 1,181,609,984 bytes (1.10 GB) |
| Free Cache VM : 25,341,952 bytes (24.2 MB) |
| Total LP Pages : 0 bytes (0 KB) |
| Free Clean LP : 0 bytes (0 KB) |
| Free Cache LP : 0 bytes (0 KB) |
| Free Dirty : 0 bytes (0 KB) |
| NLM Memory In Use : 945,061,888 bytes (901.3 MB) |
| NLM/VM Memory : 863,756,288 bytes (823.7 MB) |
| Largest Segment : 68,161,536 bytes (65.0 MB) |
| Lowest Kernel Page: 0 bytes (0 KB) |
| : [0x00000000] |
| High Water Mark : 940,093,440 bytes (896.5 MB) |
| Alloc Failures : 1 |
| |
0x40000000 --------------------------------------------------------------
| File System Address Space (L==P or L!=P) |
| |
| FS Address Space : 1,067,347,968 bytes (1017.9 MB) |
| Available : 134,033,408 bytes (127.8 MB) |
| Largest Segment : 3,923,968 bytes (3.7 MB) |
| |
| NSS Memory (85%) : 755,675,136 bytes (720.7 MB) |
| NSS (avail cache) : 736,485,376 bytes (702.4 MB) |
| |
0x00619000 --------------------------------------------------------------
| DOS / SERVER.NLM |
| |
| Size : 6,393,856 bytes (6.1 MB) |
| |
0x00000000 --------------------------------------------------------------


Total NLMs loaded on the server: 388



Top 20 Memory Consuming NLMs
NLM Name Version Date Total NLM Memory
================================================== ===============================
1. NSS.NLM 3.27.01 7 Apr 2009 231,410,768 bytes (220.7 MB)
2. GWINTER.NLM 7.00.03 11 Sep 2009 168,839,039 bytes (161.0 MB)
3. SERVER.NLM 5.70.08 3 Oct 2008 132,706,592 bytes (126.6 MB)
4. GWPOA.NLM 7.00.03 11 Sep 2009 80,534,173 bytes (76.8 MB)
5. DS.NLM 20217.06 4 Nov 2008 51,405,367 bytes (49.0 MB)
6. APACHE2.NLM 2.00.63 25 Apr 2008 19,716,037 bytes (18.8 MB)
7. GWPOA.NLM 7.00.03 11 Sep 2009 18,573,981 bytes (17.7 MB)
8. APRLIB.NLM 0.09.17 25 Apr 2008 17,626,896 bytes (16.8 MB)
9. GWPOA.NLM 7.00.03 11 Sep 2009 10,791,581 bytes (10.3 MB)
10. GWMTA.NLM 7.00.03 11 Sep 2009 10,703,594 bytes (10.2 MB)
11. OWCIMOMD.NLM 3.02 27 Nov 2007 9,322,712 bytes (8.9 MB)
12. APACHE2.NLM 2.00.63 25 Apr 2008 7,706,565 bytes (7.3 MB)
13. GWENN5.NLM 7.00.03 11 Sep 2009 5,922,727 bytes (5.6 MB)
14. GWENN5.NLM 7.00.03 11 Sep 2009 5,918,631 bytes (5.6 MB)
15. GWENN5.NLM 7.00.03 11 Sep 2009 5,918,631 bytes (5.6 MB)
16. GWENN5.NLM 7.00.03 11 Sep 2009 5,918,631 bytes (5.6 MB)
17. GWENN5.NLM 7.00.03 11 Sep 2009 5,918,631 bytes (5.6 MB)
18. GWENN5.NLM 7.00.03 11 Sep 2009 5,918,631 bytes (5.6 MB)
19. GWDVA.NLM 7.00.03 11 Sep 2009 5,772,141 bytes (5.5 MB)
20. FATFS.NLM 1.24 27 Aug 2007 5,707,861 bytes (5.4 MB)






Top 20 NLM - Memory Trends
NLM Name Original Memory Current Change
================================================== ===============================
1. NSS.NLM 230,341,712 bytes 231,410,768 bytes 1.0 MB
2. GWINTER.NLM 168,056,703 bytes 168,839,039 bytes 764 KB
3. SERVER.NLM 132,423,968 bytes 132,706,592 bytes 276 KB
4. GWPOA.NLM 95,902,365 bytes 80,534,173 bytes -14.7 MB
5. DS.NLM 51,995,191 bytes 51,405,367 bytes -576 KB
6. APACHE2.NLM 19,752,901 bytes 19,716,037 bytes -36 KB
7. GWPOA.NLM 14,895,773 bytes 18,573,981 bytes 3.5 MB
8. APRLIB.NLM 17,626,896 bytes 17,626,896 bytes 0 KB
9. GWPOA.NLM 10,486,506 bytes 10,791,581 bytes 297 KB
10. GWMTA.NLM 9,669,277 bytes 10,703,594 bytes 1010 KB
11. OWCIMOMD.NLM 9,322,712 bytes 9,322,712 bytes 0 KB
12. APACHE2.NLM 7,706,565 bytes 7,706,565 bytes 0 KB
13. GWENN5.NLM 5,922,727 bytes 5,922,727 bytes 0 KB
14. GWENN5.NLM 5,918,631 bytes 5,918,631 bytes 0 KB
15. GWENN5.NLM 5,918,631 bytes 5,918,631 bytes 0 KB
16. GWENN5.NLM 5,918,631 bytes 5,918,631 bytes 0 KB
17. GWENN5.NLM 5,918,631 bytes 5,918,631 bytes 0 KB
18. GWENN5.NLM 5,918,631 bytes 5,918,631 bytes 0 KB
19. GWDVA.NLM 5,772,141 bytes 5,772,141 bytes 0 KB
20. FATFS.NLM 5,695,573 bytes 5,707,861 bytes 12 KB

Logical Memory Summary Information
================================================== ===============================

File System Cache Information
FS Cache Free : 34,349,056 bytes (32.8 MB)
FS Cache Fragmented : 99,684,352 bytes (95.1 MB)
FS Cache Largest Segment : 3,923,968 bytes (3.7 MB)

Logical System Cache Information
LS Cache Free : 497,836,032 bytes (474.8 MB)
LS Cache Fragmented : 715,915,264 bytes (682.8 MB)
LS OS Reserved Data : 333,455,360 bytes (318.0 MB)
LS Cache Largest Segment : 68,161,536 bytes (65.0 MB)
LS Cache Largest Position : 40000000

Summary Statistics
Total Address Space : 4,294,967,296 bytes (4.00 GB)
Total Free : 532,185,088 bytes (507.5 MB)
Total Fragmented : 815,599,616 bytes (777.8 MB)
Highest Physical Address : BFEEF000
User Space : 884,998,144 bytes (844.0 MB)
User Space (High Water Mark) : 566,394,880 bytes (540.2 MB)
NLM Memory (High Water Mark) : 940,093,440 bytes (896.5 MB)
Kernel Address Space In Use : 1,858,654,208 bytes (1.73 GB)
Available Kernel Address Space : 555,360,256 bytes (529.6 MB)


Memory Summary Screen (.ms)
================================================== ===============================

KNOWN MEMORY Bytes Pages Bytes Pages
Server: 3219644464 786046 Video: 8192 2
Dos: 71632 17 Other: 131072 32

FS CACHE KERNEL NLM MEMORY
Original: 3215450112 785022 Code: 59973632 14642
Current: 134033408 32723 Data: 26206208 6398
Dirty: 0 0 Sh Code: 45056 11
Largest seg: 3923968 958 Sh Data: 20480 5
Non-Movable: 12288 3 Help: 139264 34
Other: 666152960 162635 Message: 1241088 303
Avail NSS: 736485376 179806 Alloc L!=P: 772886528 188693
Movable: 8192 2 Alloc L==P: 3244032 792
Total: 863756288 210878
VM SYSTEM
Free clean VM: 1181609984 288479
Free clean LP: 0 0
Free cache VM: 25341952 6187
Free cache LP: 0 0
Free dirty: 0 0
In use: 15802368 3858
Total: 1222762496 298526


Memory Configuration (set parameters)
================================================== ==============================

Auto Tune Server Memory = ON
File Cache Maximum Size = 1073741825
File Service Memory Optimization = 1
Logical Space Compression = 1
Garbage Collection Interval (ON) = 299.9 seconds
VM Garbage Collector Period (ON) = 300.0 seconds
server -u<number> = 884998144



NSS Configuration File:
C:\NWSERVER\NSSSTART.CFG
------------------------------
File does not exist,
or is zero byte in size.



DS Configuration File:
SYS:\_NETWARE\_NDSDB.INI
------------------------------
File does not exist,
or is zero byte in size.

TSAFS Memory Information/Configuration
================================================== ==============================

Cache Memory Threshold : 10%
Read Buffer Size : 65536 bytes
Max Data Sets for Read Ahead : 2
Read Threads Per Job : 4

NSS Memory Information/Configuration
================================================== ==============================

Current NSS Memory Settings
-------------------------------------------
Cache Balance Percentage : 85%
Cache Memory Allocated : 720.7 MB
Available Cache from NSS : 702.4 MB


Current NSS Caching Percentages
-------------------------------------------
Buffer cache hit percentage : 95%
Name Tree cache hit percentage : 43%
File cache hit percentage : 86%

NSS Flush Status: Formula not met
NSS Size + Free FS Cache < FSAS Size
NSS Size = 755675136
Free FS Cache = 134033408
FSAS Size = 1067347968


Server High/Low Water Mark Values
================================================== ==============================

NLM Memory High Water Mark = 940,093,440 bytes
File System High Water Mark = 442,264 bytes

User Space Information:
User Space High Water Mark = 566,394,880 bytes
Committed Pages High Water Mark = 517 pages
Mapped VM Pages High Water Mark = 9,592 pages
Reserved Pages High Water Mark = 442,961 pages
Swapped Pages High Water Mark = 7,119 pages

Available Low Water Mark = 488,808,448
ESM Memory High Water Mark = 245 pages