MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/03/01 through 03/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,088 2,913 4,001
Davis 2,629 280 2,909
Irvine 898 0 898
Los Angeles 167 692 859
Riverside 697 119 816
San Diego 494 267 761
San Francisco 333 0 333
Santa Barbara 550 324 874
Santa Cruz 463 253 716
LBL 0 138 138
LLL 0 79 79
Other - UC 59 257 316
CSL 0 147 147
CSU n/a 259 259
Other-Non-UC n/a 4,432 4,432
_______ ______ _____
7,378 10,160 17,538
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 230 562 4,168
2-4 a.m. 200 504 5,223
4-6 a.m. 165 451 3,424
6-8 a.m. 423 1,199 11,038
8-10 a.m. 1,980 6,431 47,158
10-12 a.m. 3,223 10,665 79,322
12-2 p.m. 3,086 10,317 73,811
2-4 p.m. 3,819 12,331 97,214
4-6 p.m. 2,440 7,788 62,049
6-8 p.m. 955 2,751 23,774
8-10 p.m. 617 1,920 14,912
10-12 p.m. 400 1,315 11,042
__________ __________ __________ _________________
Total: 17,538 56,234 433,135
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,086 8,409 11,495
Davis 9,628 949 10,577
Irvine 3,036 0 3,036
Los Angeles 507 2,088 2,595
Riverside 2,501 281 2,782
San Diego 1,174 727 1,901
San Francisco 657 0 657
Santa Barbara 1,740 688 2,428
Santa Cruz 2,406 609 3,015
LBL 0 214 214
LLL 0 309 309
Other - UC 100 634 734
CSL 0 363 363
CSU n/a 835 835
Other-Non-UC n/a 15,293 15,293
_______ ______ _____
24,835 31,399 56,234
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 27,408 62,650 90,058
Davis 71,551 3,982 75,533
Irvine 20,933 0 20,933
Los Angeles 3,315 15,764 19,079
Riverside 23,259 2,178 25,437
San Diego 7,124 5,179 12,303
San Francisco 5,817 0 5,817
Santa Barbara 13,301 7,737 21,038
Santa Cruz 13,479 6,379 19,858
LBL 0 2,103 2,103
LLL 0 1,973 1,973
Other - UC 447 4,586 5,033
CSL 0 2,557 2,557
CSU n/a 9,766 9,766
Other-Non-UC n/a 121,647 121,647
_______ ______ _____
186,634 246,501 433,135
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 5.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.6
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 8:56
Average session length (minutes:seconds) 13:09
Longest session recorded (minutes:seconds) 554:25
Average number of searches completed per session 3.1
Retrievals per search - median 2.0
Retrievals per search - average 65.9
Retrievals per search - standard deviation 842.4
Percent of searches completed with 0 results 27.9%
Percent of searches entered that are long 4.4%
Percent of long searches completed
(includes partial results) 61.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 54,547 35.1%
DISPLAY (excluding automatic displays) 50,153 32.3%
ACFIND 13 0.0%
BROWSE 302 0.2%
SELECT 167 0.1%
HELP 1,482 1.0%
EXPLAIN 1,380 0.9%
SET/RESET 4,358 2.8%
SHOW 456 0.3%
AT 3,331 2.1%
ADD ON (AND, OR, AND NOT) 1,667 1.1%
LOGON or LOGOFF 28,226 18.2%
COMMENT 11 0.0%
SAVE 830 0.5%
USE 1,376 0.9%
OTHER 6,886 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 8,600 15.0% 2,142 24.9% 11 81.3 366.2
AUTHOR 2,651 4.6% 652 24.6% 12 130.4 820.2
CORPORATE AUTH 510 0.9% 178 34.9% 15 633.4 2906.0
EXACT CA 14 0.0% 4 28.6% 91 2316.7 4731.3
TITLE WORD 14,611 25.4% 4,663 31.9% 5 40.3 228.4
EXACT TITLE 7,754 13.5% 2,236 28.8% 2 27.9 583.8
TITLE -> TW 1,135 2.0% 328 28.9% 7 77.6 716.1
TITLE -> XT 1,551 2.7% 677 43.6% 1 9.0 56.9
SUBJECT 4,288 7.5% 1,722 40.2% 41 352.0 1298.0
EXACT SUBJECT 187 0.3% 50 26.7% 65 469.8 1036.2
PERIODICAL 9,038 15.7% 1,827 20.2% 4 84.0 1008.6
EXACT PE 3,593 6.2% 532 14.8% 3 15.1 86.2
RPE 4 0.0% 2 50.0% 8 8.0 5.7
XRP 1 0.0% 1 100% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 182 0.3% 57 31.3% 23 167.8 696.6
DATE 855 1.5% 192 22.5% 3 42.9 223.4
FORM 698 1.2% 189 27.1% 19 325.6 4518.4
NUMBER* 72 0.1% 29 40.3% 2 11.9 42.4
MUSIC* 20 0.0% 12 60.0% 105 346.5 491.4
SERIES 1,109 1.9% 401 36.2% 3 174.2 3051.1
UNIFORM TITLE 7 0.0% 3 42.9% 6 8.8 10.1
Other indexes 620 1.1% 245 39.5% 1 224.6 2241.0
* 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 3,683 6.9% 1,099 29.8% 4 51.2 351.3
Single 49,910 93.1% 13,874 27.8% 5 94.8 1034.8
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 17 6.2% 4 23.5% 5 25.4 42.6
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 236 86.1% 43 18.2% 22 109.6 333.5
EXACT SUBJECT 21 7.7% 4 19.0% 15 76.7 128.8
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 1 0.4% 0 0.0% 36 36.0 0.0
Single 279 99.6% 53 19.0% 19 101.0 311.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.9%
BRIEF 68.3%
LONG 10.2%
MARC 3.3%
FIELDS 2.8%
TAG 2.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.3%
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 29.1%
2. First word of command is invalid 27.6%
3. FIND command with invalid index name 12.7%
4. DISPLAY command contains invalid word 4.0%
5. KW search in database w/o KW index 2.3%
6. PS command - no previous screen 2.2%
7. Search term missing from search command 2.2%
8. DISPLAY command - no FIND results 1.7%
9. Valid command at an inappropriate time 1.6%
10. Max. # of ports to a Z39 db are in use 1.5%
11. All others 15.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.1%
2. FIND 14.1%
3. INDEXES 8.0%
4. COMMAND WORDS 6.6%
5. Unrecognized term 5.3%
6. PASSWORDS 3.4%
7. DISPLAY 2.8%
8. NRLF 2.0%
9. CATALOG 1.8%
10. AT 1.7%
11. All others 25.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.0%
2. First word of command is invalid 14.7%
3. FIND command with invalid index name 12.6%
4. DISPLAY command - middle of >1 screen 4.0%
5. FIND command retrieves >1 book 3.1%
6. NS command - no next screen 3.1%
7. DISPLAY command-first of >1 screen 2.8%
8. DISPLAY command - last of >1 screen 2.6%
9. DISPLAY command-complete in one screen 2.3%
10. TW search with zero results 2.3%
11. All others 28.4%
Ten most frequent SHOW requests:
1. HISTORY 34.1%
2. TIME 24.5%
3. SEARCH 11.4%
4. GLOSSARY 8.2%
5. SYSTEMS INFORMATION 3.1%
6. SYSTEM NEWS 2.9%
7. SETTINGS 2.2%
8. DATABASE NEWS 1.6%
9. NEWS 1.3%
10. LOCATION 1.1%
11. All others 9.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)