MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 08/01/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,659 9,926 12,585
Davis 6,463 970 7,433
Irvine 2,613 0 2,613
Los Angeles 39 1,883 1,922
Riverside 1,837 303 2,140
San Diego 1,720 593 2,313
San Francisco 1,046 0 1,046
Santa Barbara 856 501 1,357
Santa Cruz 1,297 710 2,007
LBL 0 409 409
LLL 0 261 261
Other - UC 205 797 1,002
CSL 0 561 561
CSU n/a 463 463
Other-Non UC n/a 17,079 17,079
_______ ______ _____
18,735 34,456 53,191
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,032 3,886 33,146
2-4 a.m. 786 2,438 22,155
4-6 a.m. 812 2,471 18,477
6-8 a.m. 1,881 5,351 84,853
8-10 a.m. 7,018 23,473 190,291
10-12 a.m. 10,009 34,169 261,396
12-2 p.m. 9,346 32,945 293,644
2-4 p.m. 10,668 39,396 302,078
4-6 p.m. 6,648 25,197 212,940
6-8 p.m. 2,262 7,529 85,660
8-10 p.m. 1,443 4,266 25,662
10-12 p.m. 1,286 4,781 35,624
__________ __________ __________ _________________
Total: 53,191 185,902 1,565,926
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,172 30,991 38,163
Davis 24,074 4,236 28,310
Irvine 9,565 0 9,565
Los Angeles 70 4,630 4,700
Riverside 7,211 664 7,875
San Diego 11,899 1,421 13,320
San Francisco 2,165 0 2,165
Santa Barbara 2,927 1,146 4,073
Santa Cruz 9,978 1,707 11,685
LBL 0 566 566
LLL 0 735 735
Other - UC 234 2,076 2,310
CSL 0 829 829
CSU n/a 1,537 1,537
Other-Non UC n/a 60,069 60,069
_______ ______ _____
75,295 110,607 185,902
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 61,449 233,240 294,689
Davis 141,838 19,243 161,081
Irvine 71,595 0 71,595
Los Angeles 3,139 40,853 43,992
Riverside 44,374 6,480 50,854
San Diego 45,120 10,592 55,712
San Francisco 12,765 0 12,765
Santa Barbara 25,748 17,595 43,343
Santa Cruz 32,680 15,427 48,107
LBL 0 4,126 4,126
LLL 0 8,327 8,327
Other - UC 1,883 15,962 17,845
CSL 0 6,103 6,103
CSU n/a 18,804 18,804
Other-Non UC n/a 728,583 728,583
_______ ______ _____
440,591 1,125,335 1,565,926
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 3.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 6.1
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1189
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 56.6
Retrievals per search - standard deviation 930.7
Percent of searches completed with 0 results 26.2%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 61.4%
Commands entered, by type, excluding errors:
Total Percentage
FIND 177,952 36.8%
DISPLAY (excluding automatic displays) 155,942 32.2%
ACFIND 29 0.0%
BROWSE 945 0.2%
SELECT 528 0.1%
HELP 2,615 0.5%
EXPLAIN 2,975 0.6%
SET/RESET 13,973 2.9%
SHOW 933 0.2%
AT 10,525 2.2%
ADD ON (AND, OR, AND NOT) 7,875 1.6%
LOGON or LOGOFF 84,365 17.4%
COMMENT 2 0.0%
SAVE 2,863 0.6%
USE 3,458 0.7%
OTHER 19,121 3.9%
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 28,783 15.5% 6,840 23.8% 10 82.2 429.4
AUTHOR 6,485 3.5% 1,595 24.6% 13 104.2 409.8
CORPORATE AUTH 1,832 1.0% 663 36.2% 20 679.4 3956.0
EXACT CA 50 0.0% 20 40.0% 111 833.7 2414.9
TITLE WORD 47,019 25.3% 13,994 29.8% 3 38.1 426.6
EXACT TITLE 30,618 16.5% 8,745 28.6% 2 25.1 243.1
TITLE -> TW 4,294 2.3% 1,039 24.2% 8 65.1 826.2
TITLE -> XT 5,536 3.0% 2,311 41.7% 1 10.5 119.4
SUBJECT 6,510 3.5% 2,192 33.7% 41 468.6 4481.0
EXACT SUBJECT 481 0.3% 111 23.1% 49 357.1 843.3
PERIODICAL 29,510 15.9% 5,745 19.5% 5 82.8 1022.5
EXACT PE 11,836 6.4% 2,138 18.1% 3 36.0 560.7
RPE 9 0.0% 2 22.2% 3 9.6 10.3
XRP 4 0.0% 0 0.0% 12 9.8 6.1
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 367 0.2% 98 26.7% 36 654.5 2540.0
DATE 2,702 1.5% 596 22.1% 4 112.6 1525.8
FORM 1,780 1.0% 427 24.0% 11 134.4 1498.8
NUMBER* 165 0.1% 61 37.0% 4 188.1 974.6
MUSIC* 52 0.0% 32 61.5% 358 499.0 537.5
SERIES 4,423 2.4% 1,432 32.4% 2 81.3 1120.4
UNIFORM TITLE 18 0.0% 8 44.4% 5 224.0 350.0
Other indexes 3,397 1.8% 1,364 40.2% 1 15.5 269.3
* 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 10,155 5.8% 2,933 28.9% 3 59.6 925.3
Single 165,069 94.2% 43,438 26.3% 4 78.9 1107.5
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 121 14.4% 15 12.4% 3 24.2 83.5
CORPORATE AUTH 2 0.2% 0 0.0% 3 3.0 2.8
EXACT CA 1 0.1% 0 0.0% 1 1.0 0.0
SUBJECT 634 75.3% 110 17.3% 56 2253.6 10492.3
EXACT SUBJECT 59 7.0% 17 28.8% 60 301.5 850.3
UNIFORM TITLE 4 0.5% 2 50.0% 9,116 9116.0 12890.6
SERIES 21 2.5% 0 0.0% 14,415 37039.7 43505.8
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 883 100% 152 17.2% 33 2726.3 12919.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.6%
BRIEF 67.2%
LONG 9.9%
MARC 3.8%
FIELDS 2.4%
TAG 3.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.1%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.0%
Ten most frequent errors:
1. NS command - no next screen 33.1%
2. First word of command is invalid 25.1%
3. FIND command with invalid index name 10.9%
4. DISPLAY command contains invalid word 4.2%
5. Search term missing from search command 2.5%
6. Max. # of ports to a Z39 db are in use 2.2%
7. PS command - no previous screen 2.0%
8. KW search in database w/o KW index 1.7%
9. DISPLAY command - no FIND results 1.7%
10. Valid command at an inappropriate time 1.6%
11. All others 15.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.6%
2. FIND 12.0%
3. INDEXES 6.6%
4. Unrecognized term 5.9%
5. COMMAND WORDS 5.6%
6. PASSWORDS 4.3%
7. DISPLAY 2.7%
8. DATABASES 2.0%
9. MAIL 1.6%
10. ADD-ON SEARCH 1.5%
11. All others 36.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.5%
2. First word of command is invalid 12.1%
3. FIND command with invalid index name 11.2%
4. DISPLAY command - middle of >1 screen 3.7%
5. FIND command retrieves >1 book 3.2%
6. NS command - no next screen 2.8%
7. DISPLAY command-first of >1 screen 2.3%
8. DISPLAY command-complete in one screen 2.1%
9. DISPLAY command - last of >1 screen 2.1%
10. TW search with zero results 2.0%
11. All others 33.0%
Ten most frequent SHOW requests:
1. HISTORY 45.1%
2. SEARCH 8.5%
3. GLOSSARY 7.7%
4. SETTINGS 5.6%
5. MAIL STATUS 5.5%
6. DATABASE NEWS 3.2%
7. BOOK STATISTICS 1.1%
8. SYSTEMS INFORMATION 1.1%
9. NEWS 1.0%
10. Z39.50 NEWS 0.9%
11. All others 20.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)