MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 07/01/99 through 07/31/99
1.0 GENERAL STATISTICS (includes all databases)
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1.1 System load
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1.1.1 Total sessions:
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Location Total
________ _____
Melvyl Web 362,812
Berkeley 2,150
Davis 1,920
Irvine 3,101
Los Angeles 1,774
Riverside 506
San Diego 8,797
San Francisco 3,175
Santa Barbara 511
Santa Cruz 2,086
NRLF 0
SRLF 0
LBL 361
LLL 162
Los Alamos 0
Other - UC 6,282
CSL 0
CSU 377
Stanford 1,318
Other - Non UC 57,990
_____
453,322
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 42 12-2 p.m. 281
2-4 a.m. 22 2-4 p.m. 324
4-6 a.m. 15 4-6 p.m. 271
6-8 a.m. 34 6-8 p.m. 133
8-10 a.m. 130 8-10 p.m. 79
10-12 a.m. 266 10-12 p.m. 62
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 15941.50
For Non-UC users (hrs:mins) 474.63
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
________ _____
Melvyl Web 691,943
Berkeley 6,812
Davis 4,748
Irvine 4,002
Los Angeles 3,802
Riverside 1,218
San Diego 11,569
San Francisco 6,648
Santa Barbara 1,287
Santa Cruz 2,494
NRLF 0
SRLF 0
LBL 1,255
LLL 422
Los Alamos 0
Other - UC 12,996
CSL 0
CSU 1,180
Stanford 3,146
Other - Non UC 106,583
_____
860,105
Average number of FIND commands per hour:
12-2 a.m. 385 12-2 p.m. 2,247
2-4 a.m. 310 2-4 p.m. 2,531
4-6 a.m. 171 4-6 p.m. 1,993
6-8 a.m. 366 6-8 p.m. 988
8-10 a.m. 1,156 8-10 p.m. 627
10-12 a.m. 2,103 10-12 p.m. 491
Total number of FIND commands
Peak hourly load of 4,818 FIND commands occurred on 07/28/99 at 2 pm
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
________ _____
Melvyl Web 24,523,998
Berkeley 103,955
Davis 47,062
Irvine 25,960
Los Angeles 45,566
Riverside 13,486
San Diego 47,830
San Francisco 72,770
Santa Barbara 26,508
Santa Cruz 4,213
NRLF 0
SRLF 0
LBL 9,451
LLL 4,496
Los Alamos 0
Other - UC 262,503
CSL 0
CSU 18,460
Stanford 32,247
Other - Non UC 1,091,204
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26,329,709
Average number of records displayed per hour:
12-2 a.m. 6,455 12-2 p.m. 63,530
2-4 a.m. 3,254 2-4 p.m. 74,581
4-6 a.m. 2,466 4-6 p.m. 60,826
6-8 a.m. 7,364 6-8 p.m. 30,440
8-10 a.m. 29,524 8-10 p.m. 16,980
10-12 a.m. 60,516 10-12 p.m. 12,066
Total number of Records Displayed
Peak hourly load of 146,841 records displayed occurred on 07/28/99 at 2 pm
1.2 Relative Use of Databases
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Number of Number of % of System
Database FIND Commands Records Displayed Searches
________ _____________ _________________ ___________
CAT 325,558 7,612,711 37.8%
TEN 0 0 0.0%
PE 60,885 651,880 7.1%
ABI 10,347 94,846 1.2%
BIOSIS 25,161 229,950 2.9%
CC 43,336 954,166 5.0%
IAC databases 68,496 2,184,713 8.0%
MAGS 57,451 2,000,202 6.7%
NEWS 6,993 120,048 0.8%
COMP 4,052 64,463 0.5%
INS databases 54,530 1,852,579 6.3%
INS 29,573 1,521,004 3.4%
INS90 9,167 163,721 1.1%
INS85 6,089 70,013 0.7%
INS80 4,803 38,732 0.6%
INS69 4,898 59,109 0.6%
MED databases 230,551 10,233,882 26.8%
MED 146,838 8,560,898 17.1%
MED90 30,234 952,300 3.5%
MED85 18,272 338,471 2.1%
MED80 13,452 168,327 1.6%
MED75 11,066 107,143 1.3%
MED66 10,689 106,743 1.2%
PSYC 30,727 285,792 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 1.2
Standard deviation in seconds 7.0
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.4
Standard deviation in seconds 1.1.