MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 05/01/01 through 05/31/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 47,881 1,887,038
INS90 17,980 151,315
INS85 15,466 72,090
INS80 14,401 56,777
INS69 14,754 76,816
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,749 59,429
2-4 a.m. 1,344 46,324
4-6 a.m. 611 29,869
6-8 a.m. 1,053 35,104
8-10 a.m. 6,251 128,230
10-12 a.m. 17,174 324,105
12-2 p.m. 17,361 326,852
2-4 p.m. 22,056 456,365
4-6 p.m. 19,575 417,587
6-8 p.m. 10,006 188,596
8-10 p.m. 6,736 119,714
10-12 p.m. 5,566 111,861
__________ _____________ _________________
Total: 110,482 2,244,036
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 287
Davis 326
Irvine 90
Los Angeles 522
Riverside 1
San Diego 562
San Francisco 51
Santa Barbara 326
Santa Cruz 38
Lawrence Berkeley 123
Lawrence Livermore 118
Los Alamos 0
MELWEB 86,778
Searchlight 20,931
Other - UC 44
Other-Network UC 285
_____
110,482
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,629
Davis 1,880
Irvine 3,324
Los Angeles 3,072
Riverside 0
San Diego 4,603
San Francisco 273
Santa Barbara 6,907
Santa Cruz 426
Lawrence Berkeley 2,568
Lawrence Livermore 20,526
Los Alamos 0
MELWEB 2,186,937
Searchlight 6,774
Other - UC 691
Other-Network UC 3,426
_____
2,244,036
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.3
Standard deviation in seconds 7.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 20:47
Average session length (minutes:seconds) 16:55
Longest session recorded (minutes:seconds) 205:36
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 342.3
Retrievals per search - standard deviation 4372.4
Percent of searches completed with 0 results 35.8%
Percent of searches entered that are long 0.7%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 110,482 19.1%
PRESENT 405,196 70.2%
INIT or CLOSE 60,994 10.6%
OTHER 896 0.2%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 33,591 24.9% 10,641 31.7% 9 58.8 390.9
TITLE WORD 24,231 18.0% 10,546 43.5% 3 85.9 1296.6
EXACT TITLE 1,328 1.0% 656 49.4% 1 33.0 310.5
JOURNAL 4,616 3.4% 2,265 49.1% 7 2249.5 14149.4
EXACT JOURNAL 999 0.7% 360 36.0% 727 4723.3 11156.9
SUBJECT 4,733 3.5% 2,063 43.6% 10 253.5 1909.3
EXACT SUBJECT 906 0.7% 237 26.2% 6 305.8 1514.3
THESAURUS 42 0.0% 19 45.2% 13 226.7 314.3
EXACT THESAURUS 204 0.2% 40 19.6% 27 1004.9 3361.8
KEYWORD 52,837 39.1% 18,971 35.9% 16 772.7 6650.7
SUBFILE 207 0.2% 62 29.9% 17 258.6 660.1
FORM 1,179 0.9% 370 31.4% 19 286.8 1190.0
DATE 966 0.7% 349 36.1% 8 96.2 547.3
ADDED 313 0.2% 194 62.0% 2 8.3 16.7
ARTICLE 40 0.0% 10 25.0% 69 740.0 2090.6
AUTHOR AFFIL. 1,025 0.8% 481 46.9% 12 122.2 709.8
CONFERENCE 196 0.1% 81 41.3% 30 556.1 2825.2
LANGUAGE 3,176 2.4% 937 29.5% 28 763.2 4566.1
CHEMICAL NAME 508 0.4% 265 52.2% 14 278.5 1317.1
ISSN 14 0.0% 12 85.7% 6,279 6278.5 8433.7
ISBN 12 0.0% 6 50.0% 112 139.0 88.1
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
PRODUCT NUMBER 11 0.0% 11 100% 0 0.0 0.0
STANDARD NUMBER 2 0.0% 2 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,785 2.8% 1,153 30.5% 15 972.4 8822.4
Other indexes 32 0.0% 25 78.1% 4 25.7 59.2
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 21,014 19.0% 8,761 41.7% 6 360.4 4610.1
Single 89,468 81.0% 30,839 34.5% 12 569.7 5608.3
PRESENT commands, by type:
MARC 38.4%
OPAC 36.6%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)