MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 06/01/99 through 06/30/99
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 368,101
Berkeley 1,914
Davis 1,957
Irvine 2,070
Los Angeles 1,977
Riverside 224
San Diego 9,748
San Francisco 3,338
Santa Barbara 430
Santa Cruz 2,283
NRLF 0
SRLF 0
LBL 164
LLL 92
Los Alamos 8
Other - UC 12,329
CSL 0
CSU 448
Stanford 1,380
Other - Non UC 85,712
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492,175
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 60 12-2 p.m. 181
2-4 a.m. 33 2-4 p.m. 234
4-6 a.m. 20 4-6 p.m. 224
6-8 a.m. 32 6-8 p.m. 130
8-10 a.m. 102 8-10 p.m. 111
10-12 a.m. 167 10-12 p.m. 89
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 11577.47
For Non-UC users (hrs:mins) 399.60
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
________ _____
Melvyl Web 732,302
Berkeley 147,186
Davis 4,970
Irvine 3,116
Los Angeles 5,963
Riverside 667
San Diego 12,043
San Francisco 7,625
Santa Barbara 1,056
Santa Cruz 2,600
NRLF 0
SRLF 0
LBL 301
LLL 213
Los Alamos 14
Other - UC 29,860
CSL 0
CSU 886
Stanford 2,185
Other - Non UC 126,546
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1,077,533
Average number of FIND commands per hour:
12-2 a.m. 584 12-2 p.m. 1,467
2-4 a.m. 346 2-4 p.m. 1,883
4-6 a.m. 226 4-6 p.m. 1,653
6-8 a.m. 336 6-8 p.m. 2,160
8-10 a.m. 918 8-10 p.m. 1,314
10-12 a.m. 1,412 10-12 p.m. 1,976
Total number of FIND commands
Peak hourly load of 40,734 FIND commands occurred on 06/20/99 at 7 pm
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
________ _____
Melvyl Web 22,802,605
Berkeley 200,313
Davis 40,801
Irvine 8,809
Los Angeles 63,347
Riverside 13,765
San Diego 35,829
San Francisco 61,325
Santa Barbara 16,746
Santa Cruz 4,211
NRLF 0
SRLF 0
LBL 5,875
LLL 3,557
Los Alamos 58
Other - UC 788,259
CSL 0
CSU 7,201
Stanford 30,533
Other - Non UC 782,838
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24,866,072
Average number of records displayed per hour:
12-2 a.m. 8,762 12-2 p.m. 39,850
2-4 a.m. 5,390 2-4 p.m. 51,292
4-6 a.m. 2,687 4-6 p.m. 48,522
6-8 a.m. 5,502 6-8 p.m. 28,561
8-10 a.m. 21,370 8-10 p.m. 23,308
10-12 a.m. 34,824 10-12 p.m. 17,613
Total number of Records Displayed
Peak hourly load of 116,731 records displayed occurred on 06/30/99 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 368,915 6,931,001 34.2%
TEN 0 0 0.0%
PE 71,013 688,984 6.6%
ABI 11,966 89,588 1.1%
BIOSIS 43,092 247,099 4.0%
CC 46,763 997,538 4.3%
IAC databases 103,628 3,074,395 9.6%
MAGS 87,934 2,805,817 8.2%
NEWS 10,157 177,233 0.9%
COMP 5,537 91,345 0.5%
INS databases 182,237 1,940,940 16.9%
INS 165,613 1,652,186 15.4%
INS90 6,674 123,517 0.6%
INS85 4,313 70,752 0.4%
INS80 2,791 36,904 0.3%
INS69 2,846 57,581 0.3%
MED databases 198,815 8,152,251 18.4%
MED 145,479 6,956,456 13.5%
MED90 24,844 678,353 2.3%
MED85 12,408 247,490 1.2%
MED80 7,098 113,513 0.7%
MED75 4,616 71,780 0.4%
MED66 4,370 84,659 0.4%
PSYC 40,774 314,364 3.8%.
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 1.5
Standard deviation in seconds 8.2
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.3
Standard deviation in seconds 1.2.