MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/10/01 through 03/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,126 2,955 4,081
Davis 2,372 294 2,666
Irvine 804 0 804
Los Angeles 131 603 734
Riverside 732 160 892
San Diego 466 293 759
San Francisco 324 0 324
Santa Barbara 343 197 540
Santa Cruz 342 295 637
LBL 0 99 99
LLL 0 78 78
Other - UC 35 243 278
CSL 0 197 197
CSU n/a 220 220
Other-Non-UC n/a 4,605 4,605
_______ ______ _____
6,675 10,239 16,914
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 237 574 5,226
2-4 a.m. 188 618 4,086
4-6 a.m. 197 629 4,245
6-8 a.m. 451 1,515 10,158
8-10 a.m. 1,998 6,154 40,940
10-12 a.m. 3,127 9,979 70,013
12-2 p.m. 2,937 9,421 71,392
2-4 p.m. 3,362 11,977 84,283
4-6 p.m. 2,388 7,939 52,081
6-8 p.m. 947 2,911 17,842
8-10 p.m. 654 2,415 13,577
10-12 p.m. 428 1,575 11,949
__________ __________ __________ _________________
Total: 16,914 55,707 385,792
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,293 8,595 11,888
Davis 7,961 1,038 8,999
Irvine 3,383 0 3,383
Los Angeles 301 1,636 1,937
Riverside 2,407 543 2,950
San Diego 1,478 485 1,963
San Francisco 661 0 661
Santa Barbara 792 446 1,238
Santa Cruz 1,750 2,125 3,875
LBL 0 118 118
LLL 0 200 200
Other - UC 44 682 726
CSL 0 450 450
CSU n/a 698 698
Other-Non-UC n/a 16,621 16,621
_______ ______ _____
22,070 33,637 55,707
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 27,313 63,305 90,618
Davis 51,913 5,606 57,519
Irvine 18,478 0 18,478
Los Angeles 3,165 11,724 14,889
Riverside 17,903 3,204 21,107
San Diego 7,402 3,159 10,561
San Francisco 3,856 0 3,856
Santa Barbara 5,747 5,034 10,781
Santa Cruz 9,422 7,839 17,261
LBL 0 647 647
LLL 0 2,884 2,884
Other - UC 169 4,801 4,970
CSL 0 3,523 3,523
CSU n/a 7,492 7,492
Other-Non-UC n/a 121,206 121,206
_______ ______ _____
145,368 240,424 385,792
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 9:50
Average session length (minutes:seconds) 13:58
Longest session recorded (minutes:seconds) 1547
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 55.5
Retrievals per search - standard deviation 496.6
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 4.5%
Percent of long searches completed
(includes partial results) 64.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 53,911 35.9%
DISPLAY (excluding automatic displays) 48,593 32.3%
ACFIND 16 0.0%
BROWSE 269 0.2%
SELECT 204 0.1%
HELP 1,146 0.8%
EXPLAIN 1,198 0.8%
SET/RESET 4,426 2.9%
SHOW 332 0.2%
AT 2,996 2.0%
ADD ON (AND, OR, AND NOT) 1,758 1.2%
LOGON or LOGOFF 26,652 17.7%
COMMENT 3 0.0%
SAVE 1,265 0.8%
USE 1,113 0.7%
OTHER 6,405 4.3%
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 8,126 13.9% 2,027 24.9% 9 69.9 290.4
AUTHOR 2,437 4.2% 652 26.8% 12 137.9 765.7
CORPORATE AUTH 630 1.1% 240 38.1% 24 549.0 1504.8
EXACT CA 10 0.0% 6 60.0% 72 62.3 42.9
TITLE WORD 14,523 24.8% 4,530 31.2% 4 35.5 204.8
EXACT TITLE 9,012 15.4% 2,275 25.2% 2 18.9 118.1
TITLE -> TW 1,148 2.0% 302 26.3% 8 59.0 210.4
TITLE -> XT 1,339 2.3% 609 45.5% 1 5.6 17.4
SUBJECT 3,602 6.1% 1,346 37.4% 48 357.7 1081.3
EXACT SUBJECT 260 0.4% 54 20.8% 46 576.2 1753.9
PERIODICAL 8,650 14.8% 1,741 20.1% 5 55.0 505.4
EXACT PE 3,631 6.2% 519 14.3% 3 29.2 336.7
RPE 7 0.0% 1 14.3% 3 4.0 3.8
XRP 1 0.0% 0 0.0% 8 8.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 79 0.1% 21 26.6% 37 1716.2 8571.6
DATE 2,434 4.2% 471 19.3% 1 18.7 157.3
FORM 573 1.0% 122 21.3% 23 370.7 3128.1
NUMBER* 61 0.1% 17 27.9% 2 18.5 69.6
MUSIC* 6 0.0% 4 66.7% 372 371.5 490.0
SERIES 1,217 2.1% 439 36.1% 3 57.2 255.8
UNIFORM TITLE 8 0.0% 2 25.0% 38 106.2 152.9
Other indexes 835 1.4% 319 38.2% 1 72.6 610.9
* 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 5,429 10.2% 1,326 24.4% 2 60.2 1064.6
Single 47,566 89.8% 13,009 27.3% 5 78.0 496.0
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 14 5.8% 7 50.0% 5 39.7 86.4
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 218 90.1% 38 17.4% 37 121.4 299.8
EXACT SUBJECT 10 4.1% 2 20.0% 155 786.1 1235.1
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 1 0.4% 1 100% 0 0.0 0.0
Single 247 99.6% 47 19.0% 35 142.3 390.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.3%
BRIEF 67.5%
LONG 10.8%
MARC 4.0%
FIELDS 2.8%
TAG 2.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 29.5%
2. First word of command is invalid 27.5%
3. FIND command with invalid index name 11.8%
4. DISPLAY command contains invalid word 4.3%
5. Max. # of ports to a Z39 db are in use 2.9%
6. Search term missing from search command 2.3%
7. KW search in database w/o KW index 2.3%
8. PS command - no previous screen 1.8%
9. Valid command at an inappropriate time 1.7%
10. DISPLAY command - no FIND results 1.5%
11. All others 14.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.5%
2. FIND 13.7%
3. COMMAND WORDS 7.3%
4. INDEXES 7.2%
5. Unrecognized term 5.0%
6. PASSWORDS 4.3%
7. ADD-ON SEARCH 2.0%
8. DATABASES 2.0%
9. DISPLAY 1.8%
10. CATALOG 1.7%
11. All others 26.6%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.0%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 11.9%
4. DISPLAY command - middle of >1 screen 4.1%
5. FIND command retrieves >1 book 3.3%
6. DISPLAY command-first of >1 screen 2.9%
7. NS command - no next screen 2.3%
8. DISPLAY command-complete in one screen 2.2%
9. KW search in database w/o KW index 2.2%
10. F/BR with index invalid in current DB 2.0%
11. All others 28.7%
Ten most frequent SHOW requests:
1. HISTORY 47.3%
2. GLOSSARY 8.5%
3. SEARCH 7.3%
4. TIME 6.6%
5. SETTINGS 5.0%
6. MAIL STATUS 3.8%
7. SYSTEMS INFORMATION 3.8%
8. SYSTEM NEWS 3.2%
9. MAIL SETTINGS 1.6%
10. NEWS 1.3%
11. All others 11.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)