MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 09/01/99 through 09/30/99
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 415,595
Berkeley 2,678
Davis 1,917
Irvine 2,776
Los Angeles 2,353
Riverside 367
San Diego 12,817
San Francisco 2,576
Santa Barbara 535
Santa Cruz 2,117
NRLF 0
SRLF 0
LBL 843
LLL 113
Los Alamos 4
Other - UC 7,479
CSL 0
CSU 798
Stanford 1,922
Other - Non UC 98,969
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553,859
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 52 12-2 p.m. 376
2-4 a.m. 27 2-4 p.m. 439
4-6 a.m. 22 4-6 p.m. 341
6-8 a.m. 43 6-8 p.m. 165
8-10 a.m. 164 8-10 p.m. 114
10-12 a.m. 367 10-12 p.m. 85
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 20326.03
For Non-UC users (hrs:mins) 531.40
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
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Melvyl Web 743,201
Berkeley 7,074
Davis 4,112
Irvine 4,099
Los Angeles 5,662
Riverside 778
San Diego 16,480
San Francisco 5,968
Santa Barbara 1,338
Santa Cruz 2,868
NRLF 0
SRLF 0
LBL 1,300
LLL 209
Los Alamos 1
Other - UC 15,818
CSL 0
CSU 762
Stanford 3,520
Other - Non UC 133,045
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946,235
Average number of FIND commands per hour:
12-2 a.m. 523 12-2 p.m. 2,921
2-4 a.m. 402 2-4 p.m. 3,288
4-6 a.m. 328 4-6 p.m. 2,420
6-8 a.m. 518 6-8 p.m. 1,215
8-10 a.m. 1,490 8-10 p.m. 877
10-12 a.m. 2,903 10-12 p.m. 671
Total number of FIND commands
Peak hourly load of 5,258 FIND commands occurred on 09/27/99 at 3 pm
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
________ _____
Melvyl Web 24,564,101
Berkeley 200,766
Davis 42,722
Irvine 32,122
Los Angeles 67,947
Riverside 16,745
San Diego 58,081
San Francisco 57,279
Santa Barbara 22,177
Santa Cruz 6,610
NRLF 0
SRLF 0
LBL 14,568
LLL 1,443
Los Alamos 10
Other - UC 220,513
CSL 0
CSU 8,529
Stanford 30,001
Other - Non UC 1,485,113
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26,828,727
Average number of records displayed per hour:
12-2 a.m. 7,808 12-2 p.m. 76,297
2-4 a.m. 4,920 2-4 p.m. 87,330
4-6 a.m. 4,176 4-6 p.m. 66,443
6-8 a.m. 7,869 6-8 p.m. 31,737
8-10 a.m. 32,309 8-10 p.m. 22,583
10-12 a.m. 71,813 10-12 p.m. 16,151
Total number of Records Displayed
Peak hourly load of 154,727 records displayed occurred on 09/17/99 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 381,233 8,393,150 40.3%
TEN 0 0 0.0%
PE 74,810 788,331 7.9%
ABI 10,559 81,509 1.1%
BIOSIS 25,194 215,611 2.7%
CC 41,140 939,653 4.3%
IAC databases 64,526 2,011,765 6.8%
MAGS 53,161 1,843,486 5.6%
NEWS 7,004 116,882 0.7%
COMP 4,361 51,397 0.5%
INS databases 55,447 1,716,250 5.9%
INS 28,707 1,420,935 3.0%
INS90 8,887 134,275 0.9%
INS85 6,598 66,735 0.7%
INS80 5,553 38,290 0.6%
INS69 5,702 56,015 0.6%
MED databases 254,108 10,381,332 26.9%
MED 157,160 8,851,755 16.6%
MED90 32,060 844,163 3.4%
MED85 20,533 309,069 2.2%
MED80 16,285 156,676 1.7%
MED75 14,179 101,297 1.5%
MED66 13,891 118,372 1.5%
PSYC 26,354 252,315 2.8%.
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 1.2
Standard deviation in seconds 7.5
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.5
Standard deviation in seconds 1.5.