MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 01/01/99 through 01/31/99
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 302,097
Berkeley 1,593
Davis 2,274
Irvine 4,138
Los Angeles 1,553
Riverside 242
San Diego 5,819
San Francisco 2,608
Santa Barbara 470
Santa Cruz 129
NRLF 0
SRLF 0
LBL 292
LLL 291
Los Alamos 12
Other - UC 6,393
CSL 0
CSU 396
Stanford 1,559
Other - Non UC 48,017
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377,883
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 40 12-2 p.m. 165
2-4 a.m. 17 2-4 p.m. 190
4-6 a.m. 13 4-6 p.m. 184
6-8 a.m. 24 6-8 p.m. 110
8-10 a.m. 85 8-10 p.m. 99
10-12 a.m. 163 10-12 p.m. 83
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 11591.77
For Non-UC users (hrs:mins) 542.00
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
________ _____
Melvyl Web 741,214
Berkeley 4,713
Davis 6,558
Irvine 5,962
Los Angeles 5,082
Riverside 598
San Diego 8,470
San Francisco 6,329
Santa Barbara 1,479
Santa Cruz 755
NRLF 0
SRLF 0
LBL 658
LLL 804
Los Alamos 0
Other - UC 10,441
CSL 0
CSU 659
Stanford 2,648
Other - Non UC 103,649
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900,019
Average number of FIND commands per hour:
12-2 a.m. 329 12-2 p.m. 1,372
2-4 a.m. 188 2-4 p.m. 1,568
4-6 a.m. 153 4-6 p.m. 1,444
6-8 a.m. 250 6-8 p.m. 850
8-10 a.m. 753 8-10 p.m. 769
10-12 a.m. 1,356 10-12 p.m. 672
Total number of FIND commands
Peak hourly load of 3,650 FIND commands occurred on 01/13/99 at 10 am
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
________ _____
Melvyl Web 35,836,047
Berkeley 74,150
Davis 67,565
Irvine 41,196
Los Angeles 38,672
Riverside 8,136
San Diego 39,832
San Francisco 50,447
Santa Barbara 10,039
Santa Cruz 8,252
NRLF 0
SRLF 0
LBL 8,209
LLL 9,036
Los Alamos 0
Other - UC 176,899
CSL 0
CSU 8,879
Stanford 42,803
Other - Non UC 766,246
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37,186,408
Average number of records displayed per hour:
12-2 a.m. 9,330 12-2 p.m. 58,188
2-4 a.m. 2,928 2-4 p.m. 67,592
4-6 a.m. 2,503 4-6 p.m. 63,302
6-8 a.m. 5,237 6-8 p.m. 38,060
8-10 a.m. 28,535 8-10 p.m. 30,802
10-12 a.m. 55,727 10-12 p.m. 23,016
Total number of Records Displayed
Peak hourly load of 135,468 records displayed occurred on 01/08/99 at 4 pm
1.2 Relative Use of Databases
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Number of Number of % of System
Database FIND Commands Records Displayed Searches
________ _____________ _________________ ___________
CAT 323,140 8,759,440 35.9%
TEN 28,495 726,780 3.2%
PE 70,011 652,133 7.8%
ABI 11,180 89,621 1.2%
BIOSIS 25,665 220,924 2.9%
CC 40,790 878,606 4.5%
IAC databases 105,541 3,251,378 11.7%
MAGS 89,907 2,901,427 10.0%
NEWS 11,076 222,161 1.2%
COMP 4,558 127,790 0.5%
INS databases 41,686 1,264,845 4.6%
INS 28,533 1,011,481 3.2%
INS90 5,483 94,379 0.6%
INS85 3,601 71,778 0.4%
INS80 2,084 43,545 0.2%
INS69 1,985 43,662 0.2%
MED databases 206,279 18,692,416 22.9%
MED 156,207 16,446,995 17.4%
MED90 21,629 1,116,069 2.4%
MED85 12,690 563,051 1.4%
MED80 7,573 275,013 0.8%
MED75 4,387 143,720 0.5%
MED66 3,793 147,568 0.4%
PSYC 38,514 351,735 4.3%.
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 3625.4
Standard deviation in seconds 3.37E6
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.3
Standard deviation in seconds 1.8.