MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 02/01/99 through 02/28/99
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 368,317
Berkeley 1,866
Davis 2,000
Irvine 4,029
Los Angeles 1,414
Riverside 261
San Diego 7,061
San Francisco 2,741
Santa Barbara 310
Santa Cruz 437
NRLF 0
SRLF 0
LBL 465
LLL 162
Los Alamos 1
Other - UC 38,351
CSL 0
CSU 575
Stanford 1,549
Other - Non UC 48,780
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478,319
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 66 12-2 p.m. 222
2-4 a.m. 28 2-4 p.m. 252
4-6 a.m. 18 4-6 p.m. 228
6-8 a.m. 35 6-8 p.m. 139
8-10 a.m. 113 8-10 p.m. 140
10-12 a.m. 198 10-12 p.m. 117
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 12274.47
For Non-UC users (hrs:mins) 547.60
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
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Melvyl Web 952,001
Berkeley 7,692
Davis 6,810
Irvine 6,039
Los Angeles 3,594
Riverside 623
San Diego 10,156
San Francisco 7,191
Santa Barbara 899
Santa Cruz 1,188
NRLF 0
SRLF 0
LBL 1,638
LLL 316
Los Alamos 0
Other - UC 42,791
CSL 0
CSU 1,043
Stanford 2,552
Other - Non UC 120,815
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1,165,348
Average number of FIND commands per hour:
12-2 a.m. 646 12-2 p.m. 1,888
2-4 a.m. 379 2-4 p.m. 2,192
4-6 a.m. 234 4-6 p.m. 1,929
6-8 a.m. 369 6-8 p.m. 1,094
8-10 a.m. 1,001 8-10 p.m. 1,099
10-12 a.m. 1,717 10-12 p.m. 967
Total number of FIND commands
Peak hourly load of 7,166 FIND commands occurred on 02/19/99 at 4 pm
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
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Melvyl Web 35,079,681
Berkeley 92,431
Davis 57,788
Irvine 52,840
Los Angeles 44,109
Riverside 9,942
San Diego 55,454
San Francisco 62,834
Santa Barbara 8,023
Santa Cruz 12,266
NRLF 0
SRLF 0
LBL 11,038
LLL 7,063
Los Alamos 0
Other - UC 484,630
CSL 0
CSU 7,970
Stanford 22,326
Other - Non UC 762,699
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36,771,094
Average number of records displayed per hour:
12-2 a.m. 13,121 12-2 p.m. 62,649
2-4 a.m. 4,833 2-4 p.m. 70,436
4-6 a.m. 2,953 4-6 p.m. 59,982
6-8 a.m. 6,459 6-8 p.m. 36,641
8-10 a.m. 27,472 8-10 p.m. 36,302
10-12 a.m. 52,224 10-12 p.m. 27,731
Total number of Records Displayed
Peak hourly load of 123,926 records displayed occurred on 02/22/99 at 10 am
1.2 Relative Use of Databases
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Number of Number of % of System
Database FIND Commands Records Displayed Searches
________ _____________ _________________ ___________
CAT 421,190 11,658,445 36.1%
TEN 43,520 916,705 3.7%
PE 86,799 810,418 7.4%
ABI 15,112 126,872 1.3%
BIOSIS 36,217 288,136 3.1%
CC 50,368 998,923 4.3%
IAC databases 169,689 5,168,115 14.6%
MAGS 144,350 4,687,993 12.4%
NEWS 18,061 332,660 1.5%
COMP 7,278 147,462 0.6%
INS databases 48,972 1,725,381 4.2%
INS 33,611 1,488,164 2.9%
INS90 6,408 92,508 0.5%
INS85 3,999 62,229 0.3%
INS80 2,483 30,711 0.2%
INS69 2,471 51,769 0.2%
MED databases 228,255 11,446,978 19.6%
MED 172,776 10,210,527 14.8%
MED90 23,246 634,716 2.0%
MED85 14,111 297,022 1.2%
MED80 8,148 135,933 0.7%
MED75 5,166 85,028 0.4%
MED66 4,808 83,752 0.4%
PSYC 54,168 460,535 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 1.9
Standard deviation in seconds 8.8
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.5
Standard deviation in seconds 2.2.