MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 12/01/00 through 12/31/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 29,961 1,279,059
INS90 10,394 102,536
INS85 8,564 49,826
INS80 7,936 27,004
INS69 8,192 42,521
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,209 49,902
2-4 a.m. 918 21,176
4-6 a.m. 366 11,777
6-8 a.m. 625 13,313
8-10 a.m. 3,675 75,681
10-12 a.m. 10,067 227,027
12-2 p.m. 9,933 213,810
2-4 p.m. 13,941 302,484
4-6 p.m. 10,935 275,885
6-8 p.m. 5,493 160,489
8-10 p.m. 3,783 76,900
10-12 p.m. 3,102 72,502
__________ _____________ _________________
Total: 65,047 1,500,946
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 202
Davis 98
Irvine 33
Los Angeles 368
Riverside 0
San Diego 135
San Francisco 59
Santa Barbara 161
Santa Cruz 19
Lawrence Berkeley 77
Lawrence Livermore 41
Los Alamos 0
MELWEB 54,245
Searchlight 9,461
Other - UC 36
Other-Network UC 112
_____
65,047
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 5,034
Davis 1,751
Irvine 900
Los Angeles 13,389
Riverside 0
San Diego 1,234
San Francisco 367
Santa Barbara 1,905
Santa Cruz 540
Lawrence Berkeley 13,028
Lawrence Livermore 1,963
Los Alamos 0
MELWEB 1,447,185
Searchlight 11,305
Other - UC 428
Other-Network UC 1,917
_____
1,500,946
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.5
Standard deviation in seconds 12.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:14
Average session length (minutes:seconds) 18:41
Longest session recorded (minutes:seconds) 298:24
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 347.1
Retrievals per search - standard deviation 4343.1
Percent of searches completed with 0 results 33.3%
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 65,047 17.3%
PRESENT 276,419 73.5%
INIT or CLOSE 34,032 9.0%
OTHER 587 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 22,078 27.2% 6,725 30.5% 10 71.3 903.3
TITLE WORD 13,551 16.7% 5,299 39.1% 3 117.4 2506.1
EXACT TITLE 1,287 1.6% 712 55.3% 1 9.7 72.7
JOURNAL 3,270 4.0% 1,648 50.4% 7 1995.5 12500.7
EXACT JOURNAL 1,022 1.3% 461 45.1% 209 2829.4 7002.7
SUBJECT 3,121 3.8% 1,470 47.1% 8 373.9 2497.2
EXACT SUBJECT 580 0.7% 153 26.4% 6 201.1 930.5
THESAURUS 29 0.0% 19 65.5% 2 764.5 1414.8
EXACT THESAURUS 126 0.2% 25 19.8% 10 644.5 1564.0
KEYWORD 28,509 35.1% 8,987 31.5% 16 789.8 7077.7
SUBFILE 166 0.2% 71 42.8% 14 251.4 1094.1
FORM 824 1.0% 316 38.3% 21 189.1 648.4
DATE 590 0.7% 202 34.2% 15 172.3 878.6
ADDED 297 0.4% 164 55.2% 3 11.6 15.3
ARTICLE 46 0.1% 11 23.9% 17 455.7 1332.9
AUTHOR AFFIL. 750 0.9% 358 47.7% 11 162.2 974.9
CONFERENCE 278 0.3% 145 52.2% 11 480.6 3202.0
LANGUAGE 1,969 2.4% 593 30.1% 24 656.8 5438.5
CHEMICAL NAME 407 0.5% 243 59.7% 7 65.8 219.3
ISSN 2 0.0% 0 0.0% 881 880.5 1238.1
ISBN 4 0.0% 2 50.0% 100 99.5 108.2
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 1 0.0% 1 100% 0 0.0 0.0
STANDARD NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,257 2.8% 790 35.0% 14 541.7 3023.0
Other indexes 10 0.0% 10 100% 0 0.0 0.0
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 13,370 20.6% 5,532 41.4% 6 284.6 4763.6
Single 51,677 79.4% 16,118 31.2% 13 572.2 5420.3
PRESENT commands, by type:
MARC 40.4%
OPAC 33.6%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)