MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 07/07/01 through 07/13/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 649 2,184 2,833
Davis 1,550 251 1,801
Irvine 682 0 682
Los Angeles 7 508 515
Riverside 475 73 548
San Diego 386 193 579
San Francisco 335 0 335
Santa Barbara 208 195 403
Santa Cruz 354 113 467
LBL 0 101 101
LLL 0 53 53
Other - UC 43 184 227
CSL 0 154 154
CSU n/a 147 147
Other-Non-UC n/a 4,183 4,183
_______ ______ _____
4,689 8,339 13,028
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 256 846 7,002
2-4 a.m. 221 683 5,254
4-6 a.m. 197 640 4,202
6-8 a.m. 479 1,443 10,005
8-10 a.m. 1,566 4,860 34,740
10-12 a.m. 2,431 7,682 51,071
12-2 p.m. 2,227 7,388 49,027
2-4 p.m. 2,713 10,089 67,741
4-6 p.m. 1,691 5,493 37,101
6-8 p.m. 566 1,865 13,367
8-10 p.m. 313 1,200 8,477
10-12 p.m. 368 1,303 12,791
__________ __________ __________ _________________
Total: 13,028 43,492 300,778
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,699 6,010 7,709
Davis 5,530 1,113 6,643
Irvine 2,965 0 2,965
Los Angeles 9 1,224 1,233
Riverside 1,685 90 1,775
San Diego 1,091 449 1,540
San Francisco 503 0 503
Santa Barbara 708 596 1,304
Santa Cruz 2,534 234 2,768
LBL 0 156 156
LLL 0 211 211
Other - UC 22 794 816
CSL 0 291 291
CSU n/a 528 528
Other-Non-UC n/a 15,050 15,050
_______ ______ _____
16,746 26,746 43,492
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16,267 40,133 56,400
Davis 38,317 6,389 44,706
Irvine 17,226 0 17,226
Los Angeles 32 7,249 7,281
Riverside 13,305 933 14,238
San Diego 7,147 4,285 11,432
San Francisco 3,354 0 3,354
Santa Barbara 8,841 3,044 11,885
Santa Cruz 8,393 1,985 10,378
LBL 0 1,549 1,549
LLL 0 1,648 1,648
Other - UC 316 4,143 4,459
CSL 0 2,404 2,404
CSU n/a 4,842 4,842
Other-Non-UC n/a 108,976 108,976
_______ ______ _____
113,198 187,580 300,778
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 2.1
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:
____________________________
Median session length (minutes:seconds) 10:37
Average session length (minutes:seconds) 14:21
Longest session recorded (minutes:seconds) 551:11
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 57.2
Retrievals per search - standard deviation 1267.4
Percent of searches completed with 0 results 27.2%
Percent of searches entered that are long 4.0%
Percent of long searches completed
(includes partial results) 64.4%
Commands entered, by type, excluding errors:
Total Percentage
FIND 41,911 36.0%
DISPLAY (excluding automatic displays) 36,983 31.8%
ACFIND 11 0.0%
BROWSE 167 0.1%
SELECT 120 0.1%
HELP 672 0.6%
EXPLAIN 811 0.7%
SET/RESET 3,273 2.8%
SHOW 236 0.2%
AT 2,457 2.1%
ADD ON (AND, OR, AND NOT) 1,560 1.3%
LOGON or LOGOFF 20,939 18.0%
COMMENT 0 0.0%
SAVE 1,350 1.2%
USE 918 0.8%
OTHER 4,875 4.2%
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 6,058 13.9% 1,651 27.3% 9 66.0 268.3
AUTHOR 1,777 4.1% 486 27.3% 11 125.1 471.1
CORPORATE AUTH 488 1.1% 179 36.7% 30 531.0 2869.0
EXACT CA 4 0.0% 2 50.0% 3,567 3566.5 4734.1
TITLE WORD 9,769 22.4% 3,289 33.7% 4 53.2 535.1
EXACT TITLE 7,547 17.3% 1,991 26.4% 2 19.7 140.0
TITLE -> TW 1,024 2.3% 279 27.2% 8 47.7 90.1
TITLE -> XT 1,219 2.8% 548 45.0% 1 6.6 26.5
SUBJECT 2,100 4.8% 669 31.9% 29 254.4 827.6
EXACT SUBJECT 97 0.2% 20 20.6% 57 288.8 715.9
PERIODICAL 7,401 17.0% 1,431 19.3% 4 89.3 1207.7
EXACT PE 3,108 7.1% 477 15.3% 3 24.8 187.6
RPE 7 0.0% 0 0.0% 6 8.0 6.3
XRP 8 0.0% 0 0.0% 6 10.5 10.4
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 131 0.3% 18 13.7% 22 2138.8 21504.9
DATE 836 1.9% 211 25.2% 5 41.1 242.0
FORM 205 0.5% 58 28.3% 28 459.7 3117.9
NUMBER* 32 0.1% 18 56.3% 3 26.4 57.4
MUSIC* 11 0.0% 4 36.4% 1,030 756.9 571.3
SERIES 958 2.2% 313 32.7% 5 60.9 182.5
UNIFORM TITLE 6 0.0% 5 83.3% 2 2.0 0.0
Other indexes 832 1.9% 299 35.9% 1 52.1 614.3
* 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 2,186 5.3% 685 31.3% 4 50.3 378.3
Single 39,114 94.7% 10,550 27.0% 4 81.9 1548.7
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 13 8.3% 0 0.0% 3 37.2 109.2
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 124 79.0% 28 22.6% 42 106.9 158.9
EXACT SUBJECT 14 8.9% 1 7.1% 45 100.0 97.8
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 6 3.8% 2 33.3% 4 23.8 41.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 159 100% 32 20.1% 37 95.7 147.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.6%
BRIEF 66.1%
LONG 10.5%
MARC 3.3%
FIELDS 2.0%
TAG 3.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.7%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.3%
Ten most frequent errors:
1. NS command - no next screen 32.6%
2. First word of command is invalid 24.1%
3. FIND command with invalid index name 10.4%
4. DISPLAY command contains invalid word 4.4%
5. Search term missing from search command 2.6%
6. Max. # of ports to a Z39 db are in use 2.5%
7. DISPLAY command - no FIND results 2.0%
8. PS command - no previous screen 2.0%
9. Valid command at an inappropriate time 1.9%
10. KW search in database w/o KW index 1.8%
11. All others 15.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.4%
2. FIND 8.9%
3. Unrecognized term 6.8%
4. INDEXES 6.0%
5. COMMAND WORDS 4.7%
6. 1714 3.6%
7. PASSWORDS 3.5%
8. DISPLAY 3.1%
9. DATABASES 2.2%
10. CATALOG 1.7%
11. All others 37.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.7%
2. First word of command is invalid 12.5%
3. FIND command with invalid index name 8.9%
4. DISPLAY command-first of >1 screen 2.9%
5. FIND command retrieves >1 book 2.8%
6. NS command - no next screen 2.5%
7. TW search with zero results 2.5%
8. DISPLAY command - middle of >1 screen 2.4%
9. DISPLAY command - last of >1 screen 2.4%
10. DISPLAY command-complete in one screen 2.3%
11. All others 36.1%
Ten most frequent SHOW requests:
1. HISTORY 53.2%
2. SEARCH 9.7%
3. GLOSSARY 7.4%
4. SETTINGS 3.7%
5. TIME 3.2%
6. DATABASE NEWS 2.8%
7. SYSTEM NEWS 1.9%
8. BOOK STATISTICS 1.9%
9. STATISTICS 1.9%
10. 2292 1.4%
11. All others 13.0%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)