MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/12/01 through 05/18/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 694 2,340 3,034
Davis 2,201 260 2,461
Irvine 810 0 810
Los Angeles 24 606 630
Riverside 647 106 753
San Diego 419 193 612
San Francisco 298 0 298
Santa Barbara 354 210 564
Santa Cruz 326 193 519
LBL 0 81 81
LLL 0 69 69
Other - UC 44 236 280
CSL 0 164 164
CSU n/a 129 129
Other-Non-UC n/a 4,445 4,445
_______ ______ _____
5,817 9,032 14,849
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 294 669 4,462
2-4 a.m. 232 717 7,717
4-6 a.m. 230 717 4,425
6-8 a.m. 525 1,969 15,927
8-10 a.m. 1,799 6,375 49,106
10-12 a.m. 2,719 8,823 66,764
12-2 p.m. 2,539 8,348 62,364
2-4 p.m. 2,905 9,676 73,130
4-6 p.m. 1,832 6,350 49,220
6-8 p.m. 773 2,383 21,243
8-10 p.m. 574 1,934 18,859
10-12 p.m. 427 1,191 12,969
__________ __________ __________ _________________
Total: 14,849 49,152 386,186
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,721 8,866 10,587
Davis 8,138 946 9,084
Irvine 2,767 0 2,767
Los Angeles 67 1,720 1,787
Riverside 2,040 253 2,293
San Diego 1,026 359 1,385
San Francisco 431 0 431
Santa Barbara 1,251 586 1,837
Santa Cruz 1,144 1,069 2,213
LBL 0 137 137
LLL 0 197 197
Other - UC 57 599 656
CSL 0 438 438
CSU n/a 597 597
Other-Non-UC n/a 14,743 14,743
_______ ______ _____
18,642 30,510 49,152
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 14,966 75,899 90,865
Davis 54,874 5,120 59,994
Irvine 19,788 0 19,788
Los Angeles 507 13,775 14,282
Riverside 12,522 2,558 15,080
San Diego 7,525 2,586 10,111
San Francisco 3,312 0 3,312
Santa Barbara 11,434 4,078 15,512
Santa Cruz 7,865 9,596 17,461
LBL 0 1,616 1,616
LLL 0 1,673 1,673
Other - UC 458 3,970 4,428
CSL 0 2,822 2,822
CSU n/a 7,496 7,496
Other-Non-UC n/a 121,746 121,746
_______ ______ _____
133,251 252,935 386,186
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 0.9
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:31
Average session length (minutes:seconds) 13:54
Longest session recorded (minutes:seconds) 519:53
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 75.1
Retrievals per search - standard deviation 1206.0
Percent of searches completed with 0 results 27.6%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 63.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 47,682 35.5%
DISPLAY (excluding automatic displays) 44,568 33.2%
ACFIND 10 0.0%
BROWSE 315 0.2%
SELECT 201 0.1%
HELP 834 0.6%
EXPLAIN 902 0.7%
SET/RESET 3,768 2.8%
SHOW 265 0.2%
AT 2,954 2.2%
ADD ON (AND, OR, AND NOT) 1,446 1.1%
LOGON or LOGOFF 23,801 17.7%
COMMENT 0 0.0%
SAVE 918 0.7%
USE 1,148 0.9%
OTHER 5,583 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 7,479 15.0% 1,743 23.3% 12 85.2 392.6
AUTHOR 2,007 4.0% 498 24.8% 14 131.5 507.5
CORPORATE AUTH 473 1.0% 141 29.8% 19 1368.1 7935.1
EXACT CA 10 0.0% 3 30.0% 20 29.7 47.4
TITLE WORD 11,525 23.2% 3,785 32.8% 4 75.4 1825.0
EXACT TITLE 7,167 14.4% 2,167 30.2% 2 27.0 521.9
TITLE -> TW 1,272 2.6% 339 26.6% 7 45.8 155.7
TITLE -> XT 1,612 3.2% 724 44.9% 1 6.3 48.6
SUBJECT 2,614 5.3% 920 35.2% 42 450.6 1935.5
EXACT SUBJECT 192 0.4% 49 25.5% 39 259.2 565.3
PERIODICAL 8,925 17.9% 1,841 20.6% 4 70.0 807.9
EXACT PE 3,166 6.4% 630 19.9% 3 29.2 393.2
RPE 4 0.0% 0 0.0% 7 7.3 4.6
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 58 0.1% 9 15.5% 95 1321.4 7768.0
DATE 545 1.1% 126 23.1% 4 69.1 278.2
FORM 771 1.6% 175 22.7% 8 307.2 2579.4
NUMBER* 42 0.1% 14 33.3% 1 37.1 172.1
MUSIC* 10 0.0% 6 60.0% 47 66.0 74.3
SERIES 1,214 2.4% 359 29.6% 3 112.6 1225.1
UNIFORM TITLE 6 0.0% 3 50.0% 27 43.0 47.1
Other indexes 639 1.3% 236 36.9% 1 121.1 1244.8
* 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 2,604 5.5% 736 28.3% 4 106.7 1223.5
Single 44,404 94.5% 12,271 27.6% 5 102.7 1420.0
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 32 11.1% 10 31.3% 7 24.1 47.7
CORPORATE AUTH 2 0.7% 0 0.0% 52 51.5 55.9
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 212 73.6% 35 16.5% 32 147.7 475.3
EXACT SUBJECT 42 14.6% 10 23.8% 26 97.4 162.8
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 306 100% 58 19.0% 22 121.9 408.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 12.3%
BRIEF 66.4%
LONG 10.3%
MARC 3.2%
FIELDS 2.4%
TAG 2.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.7%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.2%
Ten most frequent errors:
1. NS command - no next screen 32.3%
2. First word of command is invalid 24.9%
3. FIND command with invalid index name 10.7%
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 2.4%
7. PS command - no previous screen 2.2%
8. DISPLAY command - no FIND results 1.9%
9. KW search in database w/o KW index 1.7%
10. Valid command at an inappropriate time 1.5%
11. All others 15.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.6%
2. FIND 16.4%
3. INDEXES 7.0%
4. COMMAND WORDS 6.0%
5. Unrecognized term 3.5%
6. PASSWORDS 3.3%
7. DATABASES 2.1%
8. DISPLAY 2.0%
9. ADD-ON SEARCH 1.8%
10. CATALOG 1.8%
11. All others 26.5%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.0%
2. First word of command is invalid 13.0%
3. FIND command with invalid index name 10.7%
4. DISPLAY command - middle of >1 screen 3.3%
5. DISPLAY command-first of >1 screen 2.9%
6. TW search with zero results 2.7%
7. FIND command retrieves >1 book 2.6%
8. NS command - no next screen 2.5%
9. F/BR with index invalid in current DB 2.5%
10. DISPLAY command-complete in one screen 2.4%
11. All others 31.3%
Ten most frequent SHOW requests:
1. HISTORY 52.4%
2. SEARCH 7.4%
3. GLOSSARY 6.9%
4. SETTINGS 4.8%
5. DATABASE NEWS 3.5%
6. MAIL STATUS 3.5%
7. SYSTEMS INFORMATION 1.7%
8. NEWS 1.3%
9. MAIL SETTINGS 1.3%
10. STATISTICS 1.3%
11. All others 16.0%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)