MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 07/28/01 through 08/03/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 555 1,930 2,485
Davis 1,262 204 1,466
Irvine 556 0 556
Los Angeles 18 389 407
Riverside 371 91 462
San Diego 403 127 530
San Francisco 239 0 239
Santa Barbara 195 102 297
Santa Cruz 327 107 434
LBL 0 68 68
LLL 0 66 66
Other - UC 15 189 204
CSL 0 98 98
CSU n/a 98 98
Other-Non-UC n/a 3,760 3,760
_______ ______ _____
3,941 7,229 11,170
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 275 953 6,747
2-4 a.m. 174 733 3,394
4-6 a.m. 207 717 3,819
6-8 a.m. 449 1,408 8,930
8-10 a.m. 1,653 5,545 39,180
10-12 a.m. 2,151 7,567 49,939
12-2 p.m. 1,756 6,000 40,647
2-4 p.m. 2,080 7,536 50,020
4-6 p.m. 1,359 4,530 31,165
6-8 p.m. 446 1,457 11,795
8-10 p.m. 301 783 6,914
10-12 p.m. 319 998 9,225
__________ __________ __________ _________________
Total: 11,170 38,227 261,775
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,521 6,481 8,002
Davis 4,088 956 5,044
Irvine 1,935 0 1,935
Los Angeles 20 944 964
Riverside 1,825 174 1,999
San Diego 2,062 268 2,330
San Francisco 382 0 382
Santa Barbara 643 226 869
Santa Cruz 1,778 197 1,975
LBL 0 91 91
LLL 0 226 226
Other - UC 49 438 487
CSL 0 99 99
CSU n/a 411 411
Other-Non-UC n/a 13,413 13,413
_______ ______ _____
14,303 23,924 38,227
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,481 45,408 56,889
Davis 25,299 4,964 30,263
Irvine 12,291 0 12,291
Los Angeles 946 6,764 7,710
Riverside 9,850 1,484 11,334
San Diego 12,936 2,255 15,191
San Francisco 2,909 0 2,909
Santa Barbara 5,009 1,968 6,977
Santa Cruz 8,528 1,415 9,943
LBL 0 559 559
LLL 0 2,392 2,392
Other - UC 175 3,501 3,676
CSL 0 983 983
CSU n/a 5,171 5,171
Other-Non-UC n/a 95,487 95,487
_______ ______ _____
89,424 172,351 261,775
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.6
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:48
Average session length (minutes:seconds) 14:18
Longest session recorded (minutes:seconds) 543:41
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 63.0
Retrievals per search - standard deviation 851.9
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 60.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 36,810 36.9%
DISPLAY (excluding automatic displays) 31,951 32.0%
ACFIND 4 0.0%
BROWSE 183 0.2%
SELECT 139 0.1%
HELP 561 0.6%
EXPLAIN 634 0.6%
SET/RESET 3,088 3.1%
SHOW 191 0.2%
AT 2,332 2.3%
ADD ON (AND, OR, AND NOT) 1,398 1.4%
LOGON or LOGOFF 17,490 17.5%
COMMENT 1 0.0%
SAVE 498 0.5%
USE 626 0.6%
OTHER 3,924 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 6,076 15.8% 1,436 23.6% 9 90.5 932.7
AUTHOR 1,411 3.7% 313 22.2% 15 111.9 407.0
CORPORATE AUTH 407 1.1% 141 34.6% 24 1046.6 6181.9
EXACT CA 12 0.0% 5 41.7% 11 1193.7 2542.3
TITLE WORD 9,353 24.3% 2,934 31.4% 4 33.9 134.9
EXACT TITLE 6,305 16.4% 1,967 31.2% 2 31.6 391.7
TITLE -> TW 1,000 2.6% 229 22.9% 7 43.4 118.7
TITLE -> XT 1,114 2.9% 450 40.4% 1 8.3 81.3
SUBJECT 1,529 4.0% 514 33.6% 40 422.6 1279.0
EXACT SUBJECT 87 0.2% 25 28.7% 77 365.4 778.5
PERIODICAL 5,749 14.9% 1,105 19.2% 5 72.3 819.5
EXACT PE 2,220 5.8% 387 17.4% 3 33.4 639.7
RPE 6 0.0% 0 0.0% 3 22.8 49.6
XRP 1 0.0% 0 0.0% 12 12.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 96 0.2% 26 27.1% 102 1143.8 4022.7
DATE 559 1.5% 146 26.1% 4 98.6 517.3
FORM 402 1.0% 112 27.9% 7 65.5 168.3
NUMBER* 30 0.1% 9 30.0% 2 1662.5 5752.0
MUSIC* 10 0.0% 8 80.0% 129 129.0 62.2
SERIES 1,040 2.7% 354 34.0% 3 123.8 2156.2
UNIFORM TITLE 2 0.0% 1 50.0% 1 1.0 0.0
Other indexes 1,103 2.9% 508 46.1% 1 22.7 438.5
* 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 2,123 5.9% 634 29.9% 3 39.0 250.9
Single 34,093 94.1% 9,363 27.5% 4 89.3 1031.0
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 65 38.9% 8 12.3% 3 8.4 22.1
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 94 56.3% 15 16.0% 41 104.1 183.5
EXACT SUBJECT 3 1.8% 0 0.0% 4 4.0 1.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 5 3.0% 0 0.0% 33 57.0 58.4
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 174 100% 25 14.4% 9 61.4 142.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.4%
BRIEF 66.3%
LONG 10.4%
MARC 3.9%
FIELDS 2.4%
TAG 3.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.5%
Ten most frequent errors:
1. NS command - no next screen 34.6%
2. First word of command is invalid 23.4%
3. FIND command with invalid index name 10.2%
4. DISPLAY command contains invalid word 4.1%
5. DISPLAY command - no FIND results 3.1%
6. Search term missing from search command 2.3%
7. Max. # of ports to a Z39 db are in use 2.2%
8. KW search in database w/o KW index 1.9%
9. PS command - no previous screen 1.9%
10. Valid command at an inappropriate time 1.5%
11. All others 14.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.5%
2. FIND 14.8%
3. Unrecognized term 5.8%
4. COMMAND WORDS 5.0%
5. PASSWORDS 4.7%
6. INDEXES 4.4%
7. DISPLAY 3.9%
8. 1714 3.2%
9. DATABASES 2.7%
10. MAIL 2.1%
11. All others 35.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.9%
2. First word of command is invalid 13.3%
3. FIND command with invalid index name 12.5%
4. DISPLAY command-first of >1 screen 3.5%
5. DISPLAY command - middle of >1 screen 3.3%
6. NS command - no next screen 2.8%
7. DISPLAY command-complete in one screen 2.8%
8. DISPLAY command - last of >1 screen 2.3%
9. TW search with zero results 2.3%
10. Help requested from SET DB command 2.2%
11. All others 31.1%
Ten most frequent SHOW requests:
1. HISTORY 54.4%
2. GLOSSARY 9.4%
3. SEARCH 9.4%
4. MAIL STATUS 7.2%
5. SETTINGS 4.4%
6. DATABASE NEWS 1.7%
7. MAIL SETTINGS 1.7%
8. GLOSSARY A 1.1%
9. NEWS 1.1%
10. 1911 1.1%
11. All others 8.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)