MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 08/01/00 through 08/31/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 45,226 1,584,221
INS90 12,096 129,349
INS85 9,724 104,251
INS80 8,626 62,751
INS69 8,942 90,523
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,033 46,315
2-4 a.m. 733 18,474
4-6 a.m. 298 11,282
6-8 a.m. 802 31,250
8-10 a.m. 4,819 129,859
10-12 a.m. 12,991 313,408
12-2 p.m. 12,322 289,467
2-4 p.m. 17,042 427,885
4-6 p.m. 21,577 421,268
6-8 p.m. 6,220 140,348
8-10 p.m. 3,185 67,737
10-12 p.m. 2,592 73,802
__________ _____________ _________________
Total: 84,614 1,971,095
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 6,656
Davis 311
Irvine 34
Los Angeles 581
Riverside 4
San Diego 502
San Francisco 31
Santa Barbara 254
Santa Cruz 42
Lawrence Berkeley 312
Lawrence Livermore 78
Los Alamos 0
MELWEB 69,727
Searchlight 5,768
Other - UC 54
Other-Network UC 260
_____
84,614
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 6,828
Davis 2,111
Irvine 582
Los Angeles 11,978
Riverside 252
San Diego 2,123
San Francisco 275
Santa Barbara 2,753
Santa Cruz 34
Lawrence Berkeley 3,576
Lawrence Livermore 6,837
Los Alamos 0
MELWEB 1,911,626
Searchlight 15,211
Other - UC 74
Other-Network UC 6,835
_____
1,971,095
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 10.1
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:55
Average session length (minutes:seconds) 21:41
Longest session recorded (minutes:seconds) 212:28
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 297.4
Retrievals per search - standard deviation 3494.5
Percent of searches completed with 0 results 31.1%
Percent of searches entered that are long 0.9%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 84,614 18.2%
PRESENT 342,142 73.6%
INIT or CLOSE 37,252 8.0%
OTHER 1,079 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 31,007 28.8% 9,829 31.7% 9 65.7 555.6
TITLE WORD 16,515 15.3% 6,523 39.5% 4 78.6 650.9
EXACT TITLE 1,430 1.3% 684 47.8% 1 61.2 606.9
JOURNAL 4,784 4.4% 2,258 47.2% 7 829.0 5071.8
EXACT JOURNAL 1,097 1.0% 497 45.3% 605 4708.6 10780.7
SUBJECT 3,800 3.5% 1,521 40.0% 11 410.5 4756.4
EXACT SUBJECT 777 0.7% 191 24.6% 7 312.5 1249.0
THESAURUS 14 0.0% 9 64.3% 2 2.0 1.2
EXACT THESAURUS 192 0.2% 35 18.2% 16 704.8 1777.7
KEYWORD 29,704 27.6% 7,930 26.7% 18 783.6 6125.3
SUBFILE 164 0.2% 49 29.9% 22 203.3 732.6
FORM 1,215 1.1% 351 28.9% 20 335.6 2804.9
DATE 1,220 1.1% 432 35.4% 8 132.3 613.9
ADDED 950 0.9% 648 68.2% 3 13.1 34.4
ARTICLE 103 0.1% 27 26.2% 38 106.8 180.4
AUTHOR AFFIL. 1,150 1.1% 640 55.6% 10 196.7 2037.0
CONFERENCE 244 0.2% 111 45.5% 33 357.9 917.9
LANGUAGE 3,259 3.0% 813 24.9% 20 524.2 4491.1
CHEMICAL NAME 752 0.7% 355 47.2% 9 187.7 1290.5
ISSN 2 0.0% 1 50.0% 2 2.0 0.0
ISBN 22 0.0% 17 77.3% 129 207.0 191.4
ID NUMBER 6,449 6.0% 2,145 33.3% 1 1.0 0.0
PRODUCT NUMBER 2 0.0% 2 100% 0 0.0 0.0
STANDARD NUMBER 3 0.0% 3 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,955 2.7% 927 31.4% 17 425.1 3018.9
Other indexes 5 0.0% 3 60.0% 205 204.5 248.2
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 19,202 22.7% 8,016 41.7% 6 227.5 2603.9
Single 65,412 77.3% 18,300 28.0% 10 480.1 4498.7
PRESENT commands, by type:
MARC 37.7%
OPAC 35.4%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)