MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 09/01/00 through 09/30/00
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 542,279
Searchlight 121,556
Berkeley 2,429
Davis 3,406
Irvine 1,537
Los Angeles 2,048
Riverside 513
San Diego 5,474
San Francisco 3,120
Santa Barbara 731
Santa Cruz 336
NRLF 0
SRLF 0
LBL 332
LLL 132
Los Alamos 7
Other - UC 3,378
CSL 0
CSU 893
Stanford 979
Other - Non UC 128,528
_____
817,678
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 64 12-2 p.m. 261
2-4 a.m. 28 2-4 p.m. 326
4-6 a.m. 21 4-6 p.m. 335
6-8 a.m. 41 6-8 p.m. 180
8-10 a.m. 133 8-10 p.m. 128
10-12 a.m. 276 10-12 p.m. 101
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 14944.37
For Non-UC users (hrs:mins) 342.67
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
________ _____
Melvyl Web 833,573
Searchlight 104,814
Berkeley 7,003
Davis 7,101
Irvine 1,930
Los Angeles 4,831
Riverside 1,214
San Diego 7,512
San Francisco 7,553
Santa Barbara 1,657
Santa Cruz 915
NRLF 0
SRLF 0
LBL 538
LLL 203
Los Alamos 5
Other - UC 11,330
CSL 0
CSU 1,120
Stanford 1,495
Other - Non UC 161,765
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1,154,559
Average number of FIND commands per hour:
12-2 a.m. 792 12-2 p.m. 2,007
2-4 a.m. 342 2-4 p.m. 2,298
4-6 a.m. 314 4-6 p.m. 2,254
6-8 a.m. 530 6-8 p.m. 1,223
8-10 a.m. 1,179 8-10 p.m. 944
10-12 a.m. 2,161 10-12 p.m. 800
Total number of FIND commands
Peak hourly load of 5,224 FIND commands occurred on 09/18/00 at 11 am
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
________ _____
Melvyl Web 26,491,938
Searchlight 495,972
Berkeley 115,552
Davis 105,172
Irvine 30,196
Los Angeles 66,630
Riverside 22,505
San Diego 51,934
San Francisco 79,653
Santa Barbara 29,657
Santa Cruz 10,746
NRLF 0
SRLF 0
LBL 5,419
LLL 5,311
Los Alamos 133
Other - UC 158,249
CSL 0
CSU 18,635
Stanford 15,787
Other - Non UC 1,516,741
_____
29,220,230
Average number of records displayed per hour:
12-2 a.m. 11,253 12-2 p.m. 44,544
2-4 a.m. 4,586 2-4 p.m. 54,646
4-6 a.m. 4,689 4-6 p.m. 55,183
6-8 a.m. 7,718 6-8 p.m. 28,501
8-10 a.m. 24,413 8-10 p.m. 21,389
10-12 a.m. 46,641 10-12 p.m. 16,427
Total number of Records Displayed
Peak hourly load of 137,884 records displayed occurred on 09/28/00 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 439,915 8,676,474 38.1%
TEN 0 0 0.0%
PE 116,328 2,627,115 10.1%
ABI 13,732 98,592 1.2%
BIOSIS 36,647 291,723 3.2%
CC 51,500 1,062,676 4.5%
IAC databases 68,258 1,752,470 5.9%
MAGS 54,638 1,625,045 4.7%
NEWS 8,869 81,793 0.8%
COMP 4,751 45,632 0.4%
INS databases 81,802 1,604,563 7.1%
INS 36,766 1,305,976 3.2%
INS90 13,290 132,557 1.2%
INS85 11,010 65,397 1.0%
INS80 10,192 40,199 0.9%
INS69 10,544 60,434 0.9%
MED databases 291,550 10,375,380 25.3%
MED 173,128 9,008,483 15.0%
MED90 34,907 724,386 3.0%
MED85 24,230 287,731 2.1%
MED80 20,709 129,770 1.8%
MED75 19,136 107,742 1.7%
MED66 19,440 117,268 1.7%
PSYC 38,521 317,277 3.3%.
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 0.9
Standard deviation in seconds 5.7
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.3
Standard deviation in seconds 1.9.
SSMmm/yy srv.sys MELVYL SYSTEM Z39.50 SERVER STATISTICS (monthly)