MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 03/01/99 through 03/31/99
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 388,961
Berkeley 2,022
Davis 1,875
Irvine 4,337
Los Angeles 1,825
Riverside 175
San Diego 11,188
San Francisco 3,165
Santa Barbara 536
Santa Cruz 1,152
NRLF 0
SRLF 0
LBL 275
LLL 253
Los Alamos 1
Other - UC 12,479
CSL 0
CSU 623
Stanford 2,049
Other - Non UC 63,189
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494,105
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 64 12-2 p.m. 213
2-4 a.m. 26 2-4 p.m. 243
4-6 a.m. 20 4-6 p.m. 209
6-8 a.m. 37 6-8 p.m. 130
8-10 a.m. 121 8-10 p.m. 132
10-12 a.m. 227 10-12 p.m. 124
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 14152.97
For Non-UC users (hrs:mins) 556.13
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
________ _____
Melvyl Web 993,898
Berkeley 6,499
Davis 4,867
Irvine 6,420
Los Angeles 4,944
Riverside 428
San Diego 15,015
San Francisco 8,220
Santa Barbara 3,277
Santa Cruz 1,283
NRLF 0
SRLF 0
LBL 879
LLL 586
Los Alamos 0
Other - UC 14,516
CSL 0
CSU 1,303
Stanford 3,839
Other - Non UC 137,380
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1,203,354
Average number of FIND commands per hour:
12-2 a.m. 570 12-2 p.m. 1,748
2-4 a.m. 252 2-4 p.m. 2,041
4-6 a.m. 255 4-6 p.m. 1,661
6-8 a.m. 378 6-8 p.m. 1,047
8-10 a.m. 1,087 8-10 p.m. 1,063
10-12 a.m. 1,940 10-12 p.m. 1,026
Total number of FIND commands
Peak hourly load of 4,171 FIND commands occurred on 03/17/99 at 11 am
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
________ _____
Melvyl Web 36,394,411
Berkeley 73,628
Davis 47,454
Irvine 47,751
Los Angeles 48,196
Riverside 5,967
San Diego 45,723
San Francisco 80,260
Santa Barbara 26,193
Santa Cruz 6,005
NRLF 0
SRLF 0
LBL 26,241
LLL 14,075
Los Alamos 0
Other - UC 146,954
CSL 0
CSU 23,496
Stanford 28,161
Other - Non UC 890,947
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37,905,462
Average number of records displayed per hour:
12-2 a.m. 11,297 12-2 p.m. 57,982
2-4 a.m. 4,278 2-4 p.m. 65,955
4-6 a.m. 3,301 4-6 p.m. 55,854
6-8 a.m. 6,522 6-8 p.m. 32,964
8-10 a.m. 28,838 8-10 p.m. 34,823
10-12 a.m. 58,852 10-12 p.m. 26,394
Total number of Records Displayed
Peak hourly load of 120,404 records displayed occurred on 03/14/99 at 1 pm
1.2 Relative Use of Databases
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Number of Number of % of System
Database FIND Commands Records Displayed Searches
________ _____________ _________________ ___________
CAT 432,181 11,638,416 35.9%
TEN 39,843 914,736 3.3%
PE 92,403 856,630 7.7%
ABI 15,104 121,280 1.3%
BIOSIS 40,319 288,949 3.4%
CC 52,960 1,084,647 4.4%
IAC databases 163,209 5,104,292 13.6%
MAGS 139,268 4,710,906 11.6%
NEWS 16,760 283,834 1.4%
COMP 7,181 109,552 0.6%
INS databases 54,069 2,024,646 4.5%
INS 36,434 1,734,080 3.0%
INS90 7,087 116,435 0.6%
INS85 4,586 69,741 0.4%
INS80 2,841 39,700 0.2%
INS69 3,121 64,690 0.3%
MED databases 244,803 12,149,338 20.3%
MED 183,974 10,662,019 15.3%
MED90 27,281 814,461 2.3%
MED85 14,567 328,467 1.2%
MED80 8,648 160,233 0.7%
MED75 5,453 90,837 0.5%
MED66 4,880 93,321 0.4%
PSYC 55,558 446,782 4.6%.
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 9.4
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.4
Standard deviation in seconds 1.7.