MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/18/02 through 05/24/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 440 1,654 2,094
Davis 1,175 165 1,340
Irvine 394 0 394
Los Angeles 3 411 414
Riverside 413 78 491
San Diego 324 103 427
San Francisco 138 0 138
Santa Barbara 284 86 370
Santa Cruz 217 122 339
LBL 0 75 75
LLL 0 31 31
Other - UC 18 164 182
CSL 0 125 125
CSU n/a 81 81
Other-Non-UC n/a 3,044 3,044
_______ ______ _____
3,406 6,139 9,545
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 199 769 4,632
2-4 a.m. 164 445 3,905
4-6 a.m. 171 555 5,313
6-8 a.m. 328 993 8,181
8-10 a.m. 1,213 4,394 30,187
10-12 a.m. 1,813 7,032 52,152
12-2 p.m. 1,650 7,330 49,158
2-4 p.m. 1,763 7,545 59,664
4-6 p.m. 1,252 5,226 41,578
6-8 p.m. 454 2,197 14,720
8-10 p.m. 252 1,275 8,960
10-12 p.m. 286 1,424 9,253
__________ __________ __________ _________________
Total: 9,545 39,185 287,703
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,183 5,663 6,846
Davis 4,319 880 5,199
Irvine 1,983 0 1,983
Los Angeles 5 1,156 1,161
Riverside 1,943 189 2,132
San Diego 1,201 238 1,439
San Francisco 492 0 492
Santa Barbara 1,541 362 1,903
Santa Cruz 1,891 1,679 3,570
LBL 0 65 65
LLL 0 34 34
Other - UC 27 1,153 1,180
CSL 0 145 145
CSU n/a 279 279
Other-Non-UC n/a 12,757 12,757
_______ ______ _____
14,585 24,600 39,185
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12,788 42,452 55,240
Davis 35,509 3,916 39,425
Irvine 15,787 0 15,787
Los Angeles 29 7,881 7,910
Riverside 12,003 2,296 14,299
San Diego 5,455 2,772 8,227
San Francisco 3,782 0 3,782
Santa Barbara 16,083 2,184 18,267
Santa Cruz 12,462 4,959 17,421
LBL 0 565 565
LLL 0 425 425
Other - UC 167 3,994 4,161
CSL 0 925 925
CSU n/a 5,517 5,517
Other-Non-UC n/a 95,752 95,752
_______ ______ _____
114,065 173,638 287,703
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 2.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.5
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:25
Average session length (minutes:seconds) 15:52
Longest session recorded (minutes:seconds) 503:39
Average number of searches completed per session 4.1
Retrievals per search - median 2.0
Retrievals per search - average 67.3
Retrievals per search - standard deviation 2352.4
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 63.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 37,808 37.5%
DISPLAY (excluding automatic displays) 34,114 33.9%
ACFIND 11 0.0%
BROWSE 134 0.1%
SELECT 65 0.1%
HELP 481 0.5%
EXPLAIN 507 0.5%
SET/RESET 1,929 1.9%
SHOW 168 0.2%
AT 2,284 2.3%
ADD ON (AND, OR, AND NOT) 1,366 1.4%
LOGON or LOGOFF 16,727 16.6%
COMMENT 0 0.0%
SAVE 659 0.7%
USE 607 0.6%
OTHER 3,899 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 5,388 13.7% 1,301 24.1% 10 77.1 320.5
AUTHOR 1,315 3.4% 323 24.6% 12 103.0 407.0
CORPORATE AUTH 335 0.9% 112 33.4% 20 1685.4 12615.8
EXACT CA 3 0.0% 1 33.3% 14 13.5 12.0
TITLE WORD 9,337 23.8% 2,874 30.8% 4 33.1 136.4
EXACT TITLE 6,761 17.2% 1,782 26.4% 2 21.6 215.5
TITLE -> TW 890 2.3% 197 22.1% 7 45.6 106.7
TITLE -> XT 1,537 3.9% 526 34.2% 2 9.0 77.2
SUBJECT 1,513 3.9% 538 35.6% 53 495.8 1882.6
EXACT SUBJECT 71 0.2% 20 28.2% 100 595.5 1397.4
PERIODICAL 6,921 17.6% 1,565 22.6% 5 68.5 799.7
EXACT PE 2,834 7.2% 473 16.7% 3 22.2 314.1
RPE 1 0.0% 0 0.0% 99 99.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 41 0.1% 4 9.8% 42 137.3 321.5
DATE 555 1.4% 101 18.2% 2 24.7 97.4
FORM 182 0.5% 37 20.3% 22 124.4 310.9
NUMBER* 21 0.1% 3 14.3% 2 108.6 306.2
MUSIC* 16 0.0% 11 68.8% 4 349.0 580.1
SERIES 771 2.0% 259 33.6% 3 80.5 679.1
UNIFORM TITLE 3 0.0% 2 66.7% 2 2.0 0.0
Other indexes 739 1.9% 311 42.1% 1 30.3 155.7
* 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 1,765 4.7% 426 24.1% 3 33.8 181.7
Single 35,607 95.3% 9,565 26.9% 4 80.1 1306.8
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 24 19.5% 8 33.3% 6 22.0 40.4
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 84 68.3% 25 29.8% 30 106.8 147.7
EXACT SUBJECT 14 11.4% 2 14.3% 126 138.6 162.2
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.8% 0 0.0% 264 264.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 129 100% 35 27.1% 20 92.2 137.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.6%
BRIEF 67.5%
LONG 9.4%
MARC 3.0%
FIELDS 3.4%
TAG 2.5%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.6%
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 32.7%
2. First word of command is invalid 27.9%
3. FIND command with invalid index name 11.7%
4. DISPLAY command contains invalid word 4.8%
5. Search term missing from search command 3.2%
6. DISPLAY command - no FIND results 2.5%
7. PS command - no previous screen 1.9%
8. Valid command at an inappropriate time 1.3%
9. KW search in database w/o KW index 1.0%
10. Command contains escape or arrow key 0.9%
11. All others 12.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.4%
2. FIND 13.4%
3. INDEXES 6.9%
4. COMMAND WORDS 6.3%
5. DATABASES 5.1%
6. PASSWORDS 4.7%
7. Unrecognized term 4.5%
8. DISPLAY 3.0%
9. ADD-ON SEARCH 2.2%
10. DATES 1.4%
11. All others 24.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.2%
2. First word of command is invalid 14.1%
3. FIND command with invalid index name 11.7%
4. DISPLAY command - middle of >1 screen 4.1%
5. FIND command retrieves >1 book 3.8%
6. DISPLAY command-complete in one screen 3.1%
7. DISPLAY command-first of >1 screen 3.0%
8. NS command - no next screen 2.9%
9. TW search with zero results 2.2%
10. FIND command retrieves 1 book 2.1%
11. All others 29.6%
Ten most frequent SHOW requests:
1. HISTORY 56.3%
2. GLOSSARY 9.3%
3. SETTINGS 9.3%
4. SEARCH 8.6%
5. NEWS 2.6%
6. UCSF PASSWORDS 1.3%
7. 0429 1.3%
8. DATABASE NEWS 1.3%
9. UPDATE 1.3%
10. LOCATION 0.7%
11. All others 7.9%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)