MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/01/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,961 7,529 9,490
Davis 5,129 600 5,729
Irvine 1,515 0 1,515
Los Angeles 24 1,654 1,678
Riverside 1,576 285 1,861
San Diego 1,318 464 1,782
San Francisco 574 0 574
Santa Barbara 1,032 301 1,333
Santa Cruz 812 641 1,453
LBL 0 297 297
LLL 0 233 233
Other - UC 86 813 899
CSL 0 506 506
CSU n/a 427 427
Other-Non UC n/a 12,919 12,919
_______ ______ _____
14,027 26,669 40,696
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 759 3,022 20,251
2-4 a.m. 651 2,175 16,695
4-6 a.m. 613 2,309 17,017
6-8 a.m. 1,361 4,713 34,064
8-10 a.m. 5,157 19,750 130,451
10-12 a.m. 7,787 30,083 209,261
12-2 p.m. 7,118 29,750 202,361
2-4 p.m. 7,880 33,013 234,059
4-6 p.m. 5,179 22,651 161,824
6-8 p.m. 1,886 8,276 60,614
8-10 p.m. 1,191 6,239 38,139
10-12 p.m. 1,114 6,039 38,889
__________ __________ __________ _________________
Total: 40,696 168,020 1,163,625
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,312 25,044 30,356
Davis 19,051 3,166 22,217
Irvine 6,903 0 6,903
Los Angeles 46 4,865 4,911
Riverside 8,982 778 9,760
San Diego 4,799 1,212 6,011
San Francisco 1,870 0 1,870
Santa Barbara 5,184 836 6,020
Santa Cruz 9,255 7,266 16,521
LBL 0 289 289
LLL 0 412 412
Other - UC 98 3,896 3,994
CSL 0 713 713
CSU n/a 1,693 1,693
Other-Non UC n/a 56,350 56,350
_______ ______ _____
61,500 106,520 168,020
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 50,631 189,201 239,832
Davis 137,452 15,340 152,792
Irvine 51,591 0 51,591
Los Angeles 151 34,918 35,069
Riverside 47,677 7,408 55,085
San Diego 22,664 12,877 35,541
San Francisco 15,245 0 15,245
Santa Barbara 45,947 5,745 51,692
Santa Cruz 37,531 25,190 62,721
LBL 0 2,387 2,387
LLL 0 4,149 4,149
Other - UC 498 18,560 19,058
CSL 0 5,581 5,581
CSU n/a 21,060 21,060
Other-Non UC n/a 411,822 411,822
_______ ______ _____
409,387 754,238 1,163,625
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 3.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.0
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 879:07
Average number of searches completed per session 4.1
Retrievals per search - median 2.0
Retrievals per search - average 61.0
Retrievals per search - standard deviation 1416.9
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 65.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 161,571 37.9%
DISPLAY (excluding automatic displays) 141,262 33.2%
ACFIND 35 0.0%
BROWSE 642 0.2%
SELECT 462 0.1%
HELP 2,261 0.5%
EXPLAIN 2,320 0.5%
SET/RESET 8,063 1.9%
SHOW 809 0.2%
AT 9,167 2.2%
ADD ON (AND, OR, AND NOT) 6,371 1.5%
LOGON or LOGOFF 71,572 16.8%
COMMENT 0 0.0%
SAVE 2,762 0.6%
USE 2,627 0.6%
OTHER 16,164 3.8%
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 23,519 14.0% 5,601 23.8% 10 74.3 341.6
AUTHOR 5,750 3.4% 1,456 25.3% 12 104.3 554.8
CORPORATE AUTH 1,494 0.9% 502 33.6% 20 1365.0 10283.5
EXACT CA 45 0.0% 11 24.4% 4 92.6 364.6
TITLE WORD 38,521 22.9% 11,916 30.9% 4 41.8 474.2
EXACT TITLE 31,088 18.4% 8,728 28.1% 2 18.1 151.4
TITLE -> TW 3,884 2.3% 965 24.8% 8 61.7 423.4
TITLE -> XT 5,067 3.0% 2,044 40.3% 1 9.7 103.5
SUBJECT 6,666 4.0% 2,249 33.7% 50 524.7 2364.8
EXACT SUBJECT 572 0.3% 138 24.1% 68 462.9 1077.1
PERIODICAL 29,186 17.3% 6,574 22.5% 5 65.8 771.6
EXACT PE 11,538 6.8% 1,854 16.1% 3 26.8 392.9
RPE 6 0.0% 0 0.0% 11 108.3 206.0
XRP 1 0.0% 0 0.0% 3 3.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 268 0.2% 39 14.6% 37 518.0 2054.5
DATE 2,661 1.6% 526 19.8% 3 46.9 422.9
FORM 1,361 0.8% 302 22.2% 18 205.7 991.4
NUMBER* 134 0.1% 58 43.3% 3 96.0 397.8
MUSIC* 62 0.0% 37 59.7% 25 280.1 521.7
SERIES 3,301 2.0% 1,107 33.5% 4 73.4 443.5
UNIFORM TITLE 27 0.0% 9 33.3% 34 225.5 326.1
Other indexes 3,387 2.0% 1,483 43.8% 1 21.5 146.1
* 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 8,384 5.3% 2,116 25.2% 3 68.5 561.4
Single 151,259 94.7% 41,255 27.3% 4 80.8 1194.9
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 71 12.3% 19 26.8% 6 50.0 118.5
CORPORATE AUTH 2 0.3% 0 0.0% 35 34.5 46.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 435 75.3% 91 20.9% 43 140.0 249.8
EXACT SUBJECT 55 9.5% 5 9.1% 59 167.4 378.9
UNIFORM TITLE 2 0.3% 1 50.0% 413 413.0 0.0
SERIES 13 2.2% 3 23.1% 1 45.5 85.8
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 614 100% 126 20.5% 32 125.0 249.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.0%
BRIEF 67.8%
LONG 9.7%
MARC 3.3%
FIELDS 3.3%
TAG 2.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.8%
Ten most frequent errors:
1. NS command - no next screen 33.5%
2. First word of command is invalid 25.5%
3. FIND command with invalid index name 12.1%
4. DISPLAY command contains invalid word 5.0%
5. Search term missing from search command 2.9%
6. PS command - no previous screen 1.9%
7. DISPLAY command - no FIND results 1.8%
8. Valid command at an inappropriate time 1.5%
9. Command contains escape or arrow key 1.1%
10. KW search in database w/o KW index 1.0%
11. All others 13.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.4%
2. FIND 12.8%
3. INDEXES 6.8%
4. Unrecognized term 5.8%
5. COMMAND WORDS 5.2%
6. PASSWORDS 3.8%
7. DATABASES 3.0%
8. DISPLAY 2.6%
9. CATALOG 1.6%
10. LOCATE (PE DB) 1.5%
11. All others 28.5%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.3%
2. First word of command is invalid 13.8%
3. FIND command with invalid index name 12.8%
4. DISPLAY command - middle of >1 screen 4.1%
5. FIND command retrieves >1 book 3.3%
6. DISPLAY command-first of >1 screen 3.1%
7. NS command - no next screen 2.7%
8. DISPLAY command-complete in one screen 2.2%
9. F/BR with index invalid in current DB 1.9%
10. FIND command retrieves 1 book 1.7%
11. All others 30.3%
Ten most frequent SHOW requests:
1. HISTORY 49.5%
2. SEARCH 8.2%
3. SETTINGS 7.4%
4. GLOSSARY 6.6%
5. MAIL STATUS 6.1%
6. LAUC NEWS 3.8%
7. DATABASE NEWS 2.6%
8. NEWS 1.3%
9. TIME 1.1%
10. DATABASES 0.9%
11. All others 12.5%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)