MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 04/20/02 through 04/26/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 23,289 596,817
BIO88 4,685 67,951
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 920 15,321
2-4 a.m. 585 5,654
4-6 a.m. 140 3,250
6-8 a.m. 551 11,733
8-10 a.m. 1,715 42,429
10-12 a.m. 3,764 100,210
12-2 p.m. 4,998 136,704
2-4 p.m. 5,358 126,538
4-6 p.m. 3,991 92,211
6-8 p.m. 2,375 53,409
8-10 p.m. 2,031 46,294
10-12 p.m. 1,546 31,015
__________ _____________ _________________
Total: 27,974 664,768
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 439
Davis 802
Irvine 18
Los Angeles 92
Riverside 48
San Diego 66
San Francisco 5
Santa Barbara 287
Santa Cruz 92
Lawrence Berkeley 1
Lawrence Livermore 1
Los Alamos 0
MELWEB 21,342
Searchlight 4,353
Other - UC 23
Other-Network UC 405
_____
27,974
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 15,175
Davis 12,662
Irvine 484
Los Angeles 1,469
Riverside 2,093
San Diego 581
San Francisco 19
Santa Barbara 3,542
Santa Cruz 1,251
Lawrence Berkeley 0
Lawrence Livermore 49
Los Alamos 0
MELWEB 604,765
Searchlight 17,418
Other - UC 201
Other-Network UC 5,059
_____
664,768
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.6
Standard deviation in seconds 6.0
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 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:19
Average session length (minutes:seconds) 19:04
Longest session recorded (minutes:seconds) 245:04
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 1082.8
Retrievals per search - standard deviation 13649
Percent of searches completed with 0 results 22.4%
Percent of searches entered that are long 0.2%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 27,974 13.7%
PRESENT 164,134 80.4%
INIT or CLOSE 11,493 5.6%
OTHER 545 0.3%
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 7,726 20.2% 1,454 18.8% 9 191.1 4754.3
TITLE WORD 4,525 11.8% 1,628 36.0% 4 574.6 8637.1
EXACT TITLE 311 0.8% 161 51.8% 1 94.8 807.5
KEYWORD 16,625 43.5% 3,298 19.8% 21 1810.2 18628.3
JOURNAL 1,563 4.1% 561 35.9% 7 2145.1 9771.4
EXACT JOURNAL 341 0.9% 150 44.0% 241 1880.8 5776.6
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 2 0.0% 2 100% 0 0.0 0.0
BIOSYS NAMES 17 0.0% 14 82.4% 8 173.3 288.1
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 54 0.1% 5 9.3% 31 426.9 937.5
MAJ CONCEPT CDES 4 0.0% 0 0.0% 11,681 59937.0 103842
CONCEPT CODES 3 0.0% 0 0.0% 739 592.3 530.4
PUBLICATION TYPE 66 0.2% 8 12.1% 45 617.0 1518.8
DATE 176 0.5% 32 18.2% 6 119.9 489.5
LANGUAGE 43 0.1% 6 14.0% 63 635.1 1353.2
ADDED 1,067 2.8% 787 73.8% 8 12.5 17.9
AUTHOR AFFIL. 108 0.3% 45 41.7% 18 40.1 82.0
ACCESSION NO. 2 0.0% 2 100% 0 0.0 0.0
ISSN 2 0.0% 1 50.0% 1,065 1065.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 3 0.0% 0 0.0% 1,697 1237.3 796.2
AT 208 0.5% 32 15.4% 17 286.9 1394.5
Other indexes 5,359 14.0% 989 18.5% 23 1361.1 9904.7
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 7,748 27.7% 2,287 29.5% 9 679.3 7277.7
Single 20,226 72.3% 3,989 19.7% 20 1637.0 17387.9
PRESENT commands, by type:
MARC 53.0%
OPAC 29.0%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)