MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 08/01/99 through 08/31/99
1.0 GENERAL STATISTICS (includes all databases)
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1.1 System load
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1.1.1 Total sessions:
______________________
Location Total
________ _____
Melvyl Web 297,931
Berkeley 1,820
Davis 1,513
Irvine 2,476
Los Angeles 1,889
Riverside 263
San Diego 39,665
San Francisco 2,158
Santa Barbara 349
Santa Cruz 1,545
NRLF 0
SRLF 0
LBL 247
LLL 57
Los Alamos 6
Other - UC 3,906
CSL 0
CSU 454
Stanford 1,372
Other - Non UC 52,591
_____
408,242
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 36 12-2 p.m. 267
2-4 a.m. 20 2-4 p.m. 323
4-6 a.m. 13 4-6 p.m. 250
6-8 a.m. 29 6-8 p.m. 116
8-10 a.m. 120 8-10 p.m. 74
10-12 a.m. 260 10-12 p.m. 56
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 15403.00
For Non-UC users (hrs:mins) 430.73
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
________ _____
Melvyl Web 525,340
Berkeley 5,653
Davis 3,667
Irvine 3,397
Los Angeles 4,323
Riverside 659
San Diego 42,447
San Francisco 4,796
Santa Barbara 826
Santa Cruz 1,870
NRLF 0
SRLF 0
LBL 453
LLL 146
Los Alamos 1
Other - UC 7,599
CSL 0
CSU 1,144
Stanford 2,198
Other - Non UC 78,358
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682,877
Average number of FIND commands per hour:
12-2 a.m. 390 12-2 p.m. 2,062
2-4 a.m. 279 2-4 p.m. 2,458
4-6 a.m. 190 4-6 p.m. 1,832
6-8 a.m. 356 6-8 p.m. 867
8-10 a.m. 1,089 8-10 p.m. 589
10-12 a.m. 2,061 10-12 p.m. 458
Total number of FIND commands
Peak hourly load of 4,443 FIND commands occurred on 08/09/99 at 2 pm
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
________ _____
Melvyl Web 18,915,932
Berkeley 623,368
Davis 38,025
Irvine 24,146
Los Angeles 64,731
Riverside 11,242
San Diego 39,435
San Francisco 66,623
Santa Barbara 14,869
Santa Cruz 12,902
NRLF 0
SRLF 0
LBL 5,445
LLL 1,917
Los Alamos 10
Other - UC 90,428
CSL 0
CSU 16,904
Stanford 16,490
Other - Non UC 734,819
_____
20,677,286
Average number of records displayed per hour:
12-2 a.m. 5,753 12-2 p.m. 57,339
2-4 a.m. 2,664 2-4 p.m. 70,343
4-6 a.m. 1,791 4-6 p.m. 52,278
6-8 a.m. 7,723 6-8 p.m. 23,648
8-10 a.m. 28,094 8-10 p.m. 15,042
10-12 a.m. 56,652 10-12 p.m. 12,744
Total number of Records Displayed
Peak hourly load of 218,512 records displayed occurred on 08/27/99 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 239,216 5,595,247 35.0%
TEN 0 0 0.0%
PE 49,768 515,819 7.3%
ABI 12,563 88,690 1.8%
BIOSIS 18,890 251,347 2.8%
CC 34,221 698,951 5.0%
IAC databases 52,866 1,312,745 7.7%
MAGS 37,758 1,202,297 5.5%
NEWS 8,223 67,684 1.2%
COMP 6,885 42,764 1.0%
INS databases 47,577 1,813,358 7.0%
INS 26,838 1,551,102 3.9%
INS90 6,993 123,206 1.0%
INS85 5,090 58,164 0.7%
INS80 4,248 32,996 0.6%
INS69 4,408 47,890 0.6%
MED databases 196,302 8,347,471 28.7%
MED 120,623 7,013,498 17.7%
MED90 25,505 747,581 3.7%
MED85 15,977 287,479 2.3%
MED80 12,425 130,591 1.8%
MED75 10,873 79,525 1.6%
MED66 10,899 88,797 1.6%
PSYC 24,421 193,564 3.6%.
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 7015.2
Standard deviation in seconds 4.7E6
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.5
Standard deviation in seconds 1.4.