MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 05/01/99 through 05/31/99
1.0 GENERAL STATISTICS (includes all databases)
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1.1 System load
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1.1.1 Total sessions:
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Location Total
________ _____
Melvyl Web 441,418
Berkeley 2,261
Davis 2,410
Irvine 2,787
Los Angeles 1,881
Riverside 298
San Diego 12,112
San Francisco 3,151
Santa Barbara 432
Santa Cruz 3,935
NRLF 0
SRLF 0
LBL 254
LLL 289
Los Alamos 44
Other - UC 15,729
CSL 0
CSU 538
Stanford 1,617
Other - Non UC 78,277
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567,433
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 71 12-2 p.m. 263
2-4 a.m. 27 2-4 p.m. 285
4-6 a.m. 17 4-6 p.m. 257
6-8 a.m. 34 6-8 p.m. 165
8-10 a.m. 130 8-10 p.m. 144
10-12 a.m. 247 10-12 p.m. 120
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 14551.87
For Non-UC users (hrs:mins) 528.90
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
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Melvyl Web 966,098
Berkeley 6,101
Davis 6,778
Irvine 3,777
Los Angeles 6,455
Riverside 839
San Diego 16,399
San Francisco 7,425
Santa Barbara 1,082
Santa Cruz 4,516
NRLF 0
SRLF 0
LBL 631
LLL 740
Los Alamos 87
Other - UC 35,648
CSL 0
CSU 1,170
Stanford 2,752
Other - Non UC 126,903
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1,187,401
Average number of FIND commands per hour:
12-2 a.m. 629 12-2 p.m. 2,136
2-4 a.m. 248 2-4 p.m. 2,348
4-6 a.m. 192 4-6 p.m. 2,057
6-8 a.m. 340 6-8 p.m. 1,332
8-10 a.m. 1,171 8-10 p.m. 1,166
10-12 a.m. 2,085 10-12 p.m. 931
Total number of FIND commands
Peak hourly load of 5,200 FIND commands occurred on 05/17/99 at 2 pm
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
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Melvyl Web 30,856,271
Berkeley 64,810
Davis 63,927
Irvine 13,825
Los Angeles 57,543
Riverside 21,725
San Diego 50,348
San Francisco 63,881
Santa Barbara 8,727
Santa Cruz 7,707
NRLF 0
SRLF 0
LBL 6,266
LLL 9,516
Los Alamos 291
Other - UC 638,493
CSL 0
CSU 8,454
Stanford 23,607
Other - Non UC 825,961
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32,721,352
Average number of records displayed per hour:
12-2 a.m. 12,016 12-2 p.m. 56,665
2-4 a.m. 4,613 2-4 p.m. 64,214
4-6 a.m. 2,348 4-6 p.m. 55,906
6-8 a.m. 5,808 6-8 p.m. 35,320
8-10 a.m. 27,103 8-10 p.m. 31,862
10-12 a.m. 54,299 10-12 p.m. 25,534
Total number of Records Displayed
Peak hourly load of 155,685 records displayed occurred on 05/17/99 at 11 am
1.2 Relative Use of Databases
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Number of Number of % of System
Database FIND Commands Records Displayed Searches
________ _____________ _________________ ___________
CAT 433,279 9,358,069 36.5%
TEN 0 0 0.0%
PE 78,699 735,393 6.6%
ABI 18,675 150,023 1.6%
BIOSIS 43,582 319,442 3.7%
CC 55,599 1,114,474 4.7%
IAC databases 193,735 6,171,435 16.3%
MAGS 164,908 5,693,665 13.9%
NEWS 20,660 375,110 1.7%
COMP 8,167 102,660 0.7%
INS databases 54,395 1,706,590 4.6%
INS 36,898 1,423,436 3.1%
INS90 7,022 107,693 0.6%
INS85 4,701 75,036 0.4%
INS80 2,736 35,994 0.2%
INS69 3,038 64,431 0.3%
MED databases 236,446 9,022,685 19.9%
MED 175,683 7,804,006 14.8%
MED90 28,524 697,795 2.4%
MED85 14,382 239,278 1.2%
MED80 8,098 122,542 0.7%
MED75 5,083 80,499 0.4%
MED66 4,676 78,565 0.4%
PSYC 60,672 477,340 5.1%.
1.3 Response time
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Search response time from receipt of search request
at CDL until transmission of search response:
Average in seconds 1.8
Standard deviation in seconds 11.0
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.5
Standard deviation in seconds 2.3.