MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/03/01 through 02/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,100 2,952 4,052
Davis 2,315 302 2,617
Irvine 956 0 956
Los Angeles 119 574 693
Riverside 737 134 871
San Diego 436 217 653
San Francisco 318 0 318
Santa Barbara 498 346 844
Santa Cruz 440 217 657
LBL 0 105 105
LLL 0 91 91
Other - UC 43 234 277
CSL 0 169 169
CSU n/a 191 191
Other-Non-UC n/a 4,367 4,367
_______ ______ _____
6,962 9,899 16,861
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 218 737 9,188
2-4 a.m. 160 503 3,545
4-6 a.m. 162 523 3,867
6-8 a.m. 450 1,217 8,933
8-10 a.m. 2,063 6,384 52,705
10-12 a.m. 3,148 10,208 78,677
12-2 p.m. 3,071 10,574 79,827
2-4 p.m. 3,434 11,209 81,709
4-6 p.m. 2,394 8,078 58,028
6-8 p.m. 849 2,548 19,860
8-10 p.m. 573 1,421 12,523
10-12 p.m. 339 975 9,677
__________ __________ __________ _________________
Total: 16,861 54,377 418,539
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,320 8,030 11,350
Davis 8,627 1,027 9,654
Irvine 3,506 0 3,506
Los Angeles 312 1,318 1,630
Riverside 2,409 296 2,705
San Diego 1,287 306 1,593
San Francisco 576 0 576
Santa Barbara 1,515 859 2,374
Santa Cruz 1,654 505 2,159
LBL 0 161 161
LLL 0 366 366
Other - UC 43 927 970
CSL 0 405 405
CSU n/a 891 891
Other-Non-UC n/a 16,037 16,037
_______ ______ _____
23,249 31,128 54,377
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 27,886 63,120 91,006
Davis 57,369 4,755 62,124
Irvine 19,456 0 19,456
Los Angeles 2,437 11,535 13,972
Riverside 20,898 2,403 23,301
San Diego 6,697 2,368 9,065
San Francisco 4,116 0 4,116
Santa Barbara 14,296 6,708 21,004
Santa Cruz 9,588 4,650 14,238
LBL 0 2,160 2,160
LLL 0 3,039 3,039
Other - UC 232 6,540 6,772
CSL 0 2,445 2,445
CSU n/a 9,289 9,289
Other-Non-UC n/a 136,552 136,552
_______ ______ _____
162,975 255,564 418,539
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 5.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.7
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 8:20
Average session length (minutes:seconds) 13:21
Longest session recorded (minutes:seconds) 584:47
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 68.7
Retrievals per search - standard deviation 915.2
Percent of searches completed with 0 results 27.8%
Percent of searches entered that are long 4.0%
Percent of long searches completed
(includes partial results) 62.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 52,626 35.2%
DISPLAY (excluding automatic displays) 48,448 32.4%
ACFIND 17 0.0%
BROWSE 527 0.4%
SELECT 247 0.2%
HELP 1,300 0.9%
EXPLAIN 1,302 0.9%
SET/RESET 4,437 3.0%
SHOW 376 0.3%
AT 3,177 2.1%
ADD ON (AND, OR, AND NOT) 1,724 1.2%
LOGON or LOGOFF 26,515 17.7%
COMMENT 9 0.0%
SAVE 1,085 0.7%
USE 1,325 0.9%
OTHER 6,516 4.4%
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 8,763 15.8% 2,199 25.1% 10 96.4 579.5
AUTHOR 2,446 4.4% 586 24.0% 14 87.6 261.5
CORPORATE AUTH 521 0.9% 187 35.9% 25 804.3 5502.0
EXACT CA 16 0.0% 8 50.0% 48 458.0 865.8
TITLE WORD 13,330 24.0% 4,388 32.9% 4 57.6 784.1
EXACT TITLE 8,032 14.5% 2,361 29.4% 2 29.9 286.8
TITLE -> TW 1,257 2.3% 313 24.9% 10 62.4 152.1
TITLE -> XT 1,332 2.4% 636 47.7% 2 14.3 111.7
SUBJECT 3,211 5.8% 1,173 36.5% 50 450.3 2349.8
EXACT SUBJECT 303 0.5% 91 30.0% 52 419.9 1120.3
PERIODICAL 9,194 16.6% 1,973 21.5% 4 86.3 1230.0
EXACT PE 3,657 6.6% 590 16.1% 3 37.8 1014.7
RPE 4 0.0% 3 75.0% 15 15.0 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 126 0.2% 32 25.4% 73 401.2 1346.9
DATE 689 1.2% 189 27.4% 3 59.3 482.9
FORM 607 1.1% 128 21.1% 14 83.1 315.3
NUMBER* 123 0.2% 17 13.8% 1 8.6 56.1
MUSIC* 7 0.0% 6 85.7% 76 76.0 0.0
SERIES 1,171 2.1% 395 33.7% 2 58.3 309.3
UNIFORM TITLE 34 0.1% 11 32.4% 17 65.3 137.1
Other indexes 682 1.2% 306 44.9% 1 27.3 165.8
* 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 3,522 6.8% 1,079 30.6% 3 49.5 377.7
Single 48,272 93.2% 13,392 27.7% 5 99.8 1126.0
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 93 19.0% 23 24.7% 5 33.4 91.9
CORPORATE AUTH 3 0.6% 0 0.0% 12 208.7 345.8
EXACT CA 2 0.4% 0 0.0% 167 166.5 47.4
SUBJECT 347 71.0% 91 26.2% 50 175.2 767.8
EXACT SUBJECT 44 9.0% 10 22.7% 39 145.9 221.7
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 496 100% 126 25.4% 28 145.0 646.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.1%
BRIEF 67.2%
LONG 10.9%
MARC 2.5%
FIELDS 3.1%
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 7.8%
Ten most frequent errors:
1. NS command - no next screen 28.9%
2. First word of command is invalid 26.7%
3. FIND command with invalid index name 13.0%
4. DISPLAY command contains invalid word 4.6%
5. Max. # of ports to a Z39 db are in use 2.7%
6. Search term missing from search command 2.3%
7. KW search in database w/o KW index 2.1%
8. PS command - no previous screen 1.9%
9. DISPLAY command - no FIND results 1.7%
10. Valid command at an inappropriate time 1.3%
11. All others 14.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.5%
2. FIND 12.9%
3. COMMAND WORDS 6.8%
4. INDEXES 6.6%
5. Unrecognized term 5.2%
6. PASSWORDS 4.3%
7. DISPLAY 2.7%
8. DATABASES 2.5%
9. ADD-ON SEARCH 1.9%
10. CATALOG 1.8%
11. All others 28.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.8%
2. First word of command is invalid 14.9%
3. FIND command with invalid index name 12.5%
4. DISPLAY command - middle of >1 screen 4.4%
5. DISPLAY command-first of >1 screen 3.4%
6. FIND command retrieves >1 book 2.8%
7. NS command - no next screen 2.7%
8. DISPLAY command-complete in one screen 2.4%
9. Help requested from SET DB command 2.2%
10. SU search with zero results 2.1%
11. All others 29.8%
Ten most frequent SHOW requests:
1. HISTORY 39.4%
2. TIME 19.0%
3. SEARCH 15.2%
4. GLOSSARY 5.8%
5. SETTINGS 2.5%
6. SYSTEM NEWS 2.2%
7. DATABASE NEWS 2.2%
8. MAIL STATUS 1.4%
9. MAIL SETTINGS 1.1%
10. SYSTEMS INFORMATION 1.1%
11. All others 10.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)