MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 04/01/99 through 04/30/99
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 402,324
Berkeley 2,263
Davis 1,911
Irvine 3,871
Los Angeles 1,398
Riverside 225
San Diego 9,106
San Francisco 2,603
Santa Barbara 524
Santa Cruz 1,491
NRLF 0
SRLF 0
LBL 294
LLL 154
Los Alamos 1
Other - UC 9,032
CSL 0
CSU 795
Stanford 1,525
Other - Non UC 58,147
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495,664
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 67 12-2 p.m. 215
2-4 a.m. 32 2-4 p.m. 252
4-6 a.m. 22 4-6 p.m. 221
6-8 a.m. 33 6-8 p.m. 137
8-10 a.m. 118 8-10 p.m. 126
10-12 a.m. 208 10-12 p.m. 115
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 12775.50
For Non-UC users (hrs:mins) 457.60
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
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Melvyl Web 943,727
Berkeley 6,458
Davis 4,607
Irvine 6,042
Los Angeles 4,457
Riverside 582
San Diego 11,551
San Francisco 7,869
Santa Barbara 1,460
Santa Cruz 1,826
NRLF 0
SRLF 0
LBL 636
LLL 331
Los Alamos 1
Other - UC 19,522
CSL 0
CSU 1,863
Stanford 2,817
Other - Non UC 106,730
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1,120,479
Average number of FIND commands per hour:
12-2 a.m. 477 12-2 p.m. 1,741
2-4 a.m. 224 2-4 p.m. 2,034
4-6 a.m. 196 4-6 p.m. 1,662
6-8 a.m. 356 6-8 p.m. 1,060
8-10 a.m. 1,080 8-10 p.m. 954
10-12 a.m. 1,694 10-12 p.m. 841
Total number of FIND commands
Peak hourly load of 3,714 FIND commands occurred on 04/26/99 at 10 am
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
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Melvyl Web 34,067,288
Berkeley 78,327
Davis 53,319
Irvine 63,104
Los Angeles 55,506
Riverside 13,369
San Diego 28,905
San Francisco 70,984
Santa Barbara 13,379
Santa Cruz 5,501
NRLF 0
SRLF 0
LBL 10,621
LLL 16,004
Los Alamos 10
Other - UC 255,161
CSL 0
CSU 14,355
Stanford 17,216
Other - Non UC 741,745
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35,504,794
Average number of records displayed per hour:
12-2 a.m. 10,207 12-2 p.m. 54,577
2-4 a.m. 3,409 2-4 p.m. 63,772
4-6 a.m. 2,503 4-6 p.m. 57,307
6-8 a.m. 6,394 6-8 p.m. 33,457
8-10 a.m. 28,949 8-10 p.m. 29,573
10-12 a.m. 51,245 10-12 p.m. 23,720
Total number of Records Displayed
Peak hourly load of 111,839 records displayed occurred on 04/21/99 at 3 pm
1.2 Relative Use of Databases
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Number of Number of % of System
Database FIND Commands Records Displayed Searches
________ _____________ _________________ ___________
CAT 405,573 10,558,756 36.2%
TEN 3,940 115,853 0.4%
PE 83,651 801,217 7.5%
ABI 18,547 160,057 1.7%
BIOSIS 41,043 296,536 3.7%
CC 57,304 1,274,495 5.1%
IAC databases 160,238 4,948,536 14.3%
MAGS 137,225 4,517,234 12.2%
NEWS 15,331 305,078 1.4%
COMP 7,682 126,224 0.7%
INS databases 54,939 1,994,054 4.9%
INS 37,366 1,674,693 3.3%
INS90 7,296 113,113 0.7%
INS85 4,654 77,122 0.4%
INS80 2,789 45,434 0.2%
INS69 2,834 83,692 0.3%
MED databases 232,116 11,777,819 20.7%
MED 173,840 9,972,231 15.5%
MED90 27,352 1,003,040 2.4%
MED85 13,567 373,453 1.2%
MED80 7,740 203,305 0.7%
MED75 5,032 123,931 0.4%
MED66 4,585 101,859 0.4%
PSYC 50,472 398,146 4.5%.
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 2925.2
Standard deviation in seconds 3.03E6
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.4
Standard deviation in seconds 1.3.