MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/01/01 through 03/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,137 12,011 16,148
Davis 9,218 1,094 10,312
Irvine 3,512 0 3,512
Los Angeles 462 2,475 2,937
Riverside 2,773 531 3,304
San Diego 1,914 1,064 2,978
San Francisco 1,436 0 1,436
Santa Barbara 1,517 1,112 2,629
Santa Cruz 1,464 1,068 2,532
LBL 0 570 570
LLL 0 385 385
Other - UC 197 1,033 1,230
CSL 0 734 734
CSU n/a 922 922
Other-Non UC n/a 19,796 19,796
_______ ______ _____
26,630 42,795 69,425
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,097 3,164 27,087
2-4 a.m. 872 3,037 31,653
4-6 a.m. 843 2,533 21,999
6-8 a.m. 1,912 5,949 47,146
8-10 a.m. 8,353 26,914 193,551
10-12 a.m. 12,903 43,709 316,480
12-2 p.m. 12,241 40,802 308,583
2-4 p.m. 14,400 49,152 368,647
4-6 p.m. 9,322 30,074 232,539
6-8 p.m. 3,399 10,093 77,524
8-10 p.m. 2,434 7,882 55,024
10-12 p.m. 1,649 5,383 46,420
__________ __________ __________ _________________
Total: 69,425 228,692 1,726,653
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12,029 34,750 46,779
Davis 33,343 3,845 37,188
Irvine 12,941 0 12,941
Los Angeles 1,176 6,480 7,656
Riverside 9,970 1,498 11,468
San Diego 5,733 2,350 8,083
San Francisco 2,915 0 2,915
Santa Barbara 4,636 2,953 7,589
Santa Cruz 7,796 4,267 12,063
LBL 0 753 753
LLL 0 1,221 1,221
Other - UC 220 2,673 2,893
CSL 0 1,934 1,934
CSU n/a 3,106 3,106
Other-Non UC n/a 72,103 72,103
_______ ______ _____
90,759 137,933 228,692
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 97,768 257,694 355,462
Davis 236,436 18,500 254,936
Irvine 82,329 0 82,329
Los Angeles 9,970 51,436 61,406
Riverside 80,031 11,587 91,618
San Diego 31,957 17,711 49,668
San Francisco 21,497 0 21,497
Santa Barbara 35,758 25,171 60,929
Santa Cruz 41,021 26,292 67,313
LBL 0 8,366 8,366
LLL 0 12,812 12,812
Other - UC 939 20,332 21,271
CSL 0 13,742 13,742
CSU n/a 36,488 36,488
Other-Non UC n/a 588,816 588,816
_______ ______ _____
637,706 1,088,947 1,726,653
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 3.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1547
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 61.7
Retrievals per search - standard deviation 827.7
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 63.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 221,354 35.5%
DISPLAY (excluding automatic displays) 204,298 32.7%
ACFIND 71 0.0%
BROWSE 1,380 0.2%
SELECT 800 0.1%
HELP 4,727 0.8%
EXPLAIN 4,869 0.8%
SET/RESET 17,827 2.9%
SHOW 1,491 0.2%
AT 13,094 2.1%
ADD ON (AND, OR, AND NOT) 7,211 1.2%
LOGON or LOGOFF 110,708 17.7%
COMMENT 15 0.0%
SAVE 4,126 0.7%
USE 5,026 0.8%
OTHER 27,018 4.3%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 36,206 15.3% 9,038 25.0% 10 72.8 312.2
AUTHOR 9,798 4.2% 2,532 25.8% 12 128.5 651.8
CORPORATE AUTH 2,470 1.0% 924 37.4% 22 514.0 1878.0
EXACT CA 55 0.0% 18 32.7% 66 841.0 2590.7
TITLE WORD 58,012 24.6% 18,105 31.2% 4 45.5 723.7
EXACT TITLE 34,840 14.8% 9,760 28.0% 2 21.7 300.5
TITLE -> TW 4,940 2.1% 1,321 26.7% 8 60.8 387.3
TITLE -> XT 6,235 2.6% 2,876 46.1% 1 7.9 66.0
SUBJECT 13,879 5.9% 5,287 38.1% 42 359.0 1455.9
EXACT SUBJECT 802 0.3% 189 23.6% 51 581.3 2564.6
PERIODICAL 37,961 16.1% 7,714 20.3% 4 73.6 1066.2
EXACT PE 14,078 6.0% 2,118 15.0% 3 27.3 363.3
RPE 22 0.0% 4 18.2% 4 4.9 4.8
XRP 4 0.0% 1 25.0% 6 5.7 2.5
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 469 0.2% 134 28.6% 40 544.2 3705.9
DATE 5,007 2.1% 1,078 21.5% 2 93.2 2146.5
FORM 2,732 1.2% 622 22.8% 19 284.5 3078.9
NUMBER* 236 0.1% 92 39.0% 2 21.8 75.1
MUSIC* 163 0.1% 101 62.0% 11 359.5 683.1
SERIES 4,944 2.1% 1,757 35.5% 3 111.4 2041.1
UNIFORM TITLE 53 0.0% 20 37.7% 41 408.5 885.8
Other indexes 3,015 1.3% 1,178 39.1% 1 98.9 1211.9
* Number indexes include REPORT NUMBER STOCK NUMBER,
GOVERNMENT DOCUMENTS, and GPO ITEM NUMBER;
Music indexes include MUSICAL KEY, MUSIC PUBLISHER, and THEMATIC
By number of indexes:
Multiple 17,371 8.0% 4,883 28.1% 3 53.7 667.5
Single 200,397 92.0% 54,906 27.4% 5 87.0 989.1
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 58 4.6% 15 25.9% 8 52.2 94.6
CORPORATE AUTH 5 0.4% 3 60.0% 224 224.0 134.4
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 1,107 87.7% 193 17.4% 36 149.3 530.9
EXACT SUBJECT 86 6.8% 13 15.1% 15 226.6 681.2
UNIFORM TITLE 1 0.1% 0 0.0% 206 206.0 0.0
SERIES 5 0.4% 0 0.0% 48 96.2 94.7
By number of indexes:
Multiple 3 0.2% 1 33.3% 250 250.0 302.6
Single 1,300 99.8% 234 18.0% 35 146.6 523.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.1%
BRIEF 66.5%
LONG 11.1%
MARC 3.6%
FIELDS 2.9%
TAG 2.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. NS command - no next screen 30.1%
2. First word of command is invalid 26.8%
3. FIND command with invalid index name 11.8%
4. DISPLAY command contains invalid word 4.5%
5. Search term missing from search command 2.4%
6. Max. # of ports to a Z39 db are in use 2.3%
7. KW search in database w/o KW index 2.2%
8. PS command - no previous screen 2.1%
9. Valid command at an inappropriate time 1.6%
10. DISPLAY command - no FIND results 1.5%
11. All others 14.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.1%
2. FIND 13.7%
3. INDEXES 8.1%
4. COMMAND WORDS 6.3%
5. Unrecognized term 5.4%
6. PASSWORDS 3.7%
7. DISPLAY 2.9%
8. DATABASES 2.1%
9. CATALOG 2.1%
10. ADD-ON SEARCH 1.7%
11. All others 27.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.1%
2. First word of command is invalid 14.0%
3. FIND command with invalid index name 12.3%
4. DISPLAY command - middle of >1 screen 4.1%
5. FIND command retrieves >1 book 3.1%
6. DISPLAY command-first of >1 screen 2.9%
7. NS command - no next screen 2.9%
8. DISPLAY command - last of >1 screen 2.1%
9. DISPLAY command-complete in one screen 2.1%
10. F/BR with index invalid in current DB 2.0%
11. All others 30.4%
Ten most frequent SHOW requests:
1. HISTORY 44.3%
2. SEARCH 11.7%
3. TIME 9.4%
4. GLOSSARY 9.2%
5. SETTINGS 4.3%
6. SYSTEMS INFORMATION 2.7%
7. SYSTEM NEWS 2.5%
8. MAIL STATUS 2.1%
9. NEWS 1.3%
10. DATABASE NEWS 1.1%
11. All others 11.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)