MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/26/01 through 06/01/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 380 1,708 2,088
Davis 1,675 188 1,863
Irvine 600 0 600
Los Angeles 20 471 491
Riverside 379 82 461
San Diego 295 159 454
San Francisco 195 0 195
Santa Barbara 259 163 422
Santa Cruz 249 154 403
LBL 0 61 61
LLL 0 42 42
Other - UC 25 123 148
CSL 0 107 107
CSU n/a 87 87
Other-Non-UC n/a 3,615 3,615
_______ ______ _____
4,077 6,960 11,037
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 269 905 8,278
2-4 a.m. 169 521 4,109
4-6 a.m. 181 611 6,614
6-8 a.m. 424 2,200 17,068
8-10 a.m. 1,495 4,822 33,154
10-12 a.m. 2,166 7,296 57,203
12-2 p.m. 2,054 6,445 51,444
2-4 p.m. 1,862 6,258 47,006
4-6 p.m. 1,226 3,824 37,400
6-8 p.m. 438 1,476 11,656
8-10 p.m. 410 1,281 8,905
10-12 p.m. 343 876 6,664
__________ __________ __________ _________________
Total: 11,037 36,515 289,501
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,270 7,137 8,407
Davis 6,096 617 6,713
Irvine 1,801 0 1,801
Los Angeles 65 1,119 1,184
Riverside 1,442 195 1,637
San Diego 833 281 1,114
San Francisco 337 0 337
Santa Barbara 815 335 1,150
Santa Cruz 1,281 347 1,628
LBL 0 124 124
LLL 0 151 151
Other - UC 21 340 361
CSL 0 190 190
CSU n/a 381 381
Other-Non-UC n/a 11,337 11,337
_______ ______ _____
13,961 22,554 36,515
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,437 58,825 67,262
Davis 43,011 2,890 45,901
Irvine 13,461 0 13,461
Los Angeles 718 9,058 9,776
Riverside 8,081 3,936 12,017
San Diego 7,930 2,621 10,551
San Francisco 3,105 0 3,105
Santa Barbara 18,015 3,578 21,593
Santa Cruz 6,187 3,413 9,600
LBL 0 1,056 1,056
LLL 0 1,241 1,241
Other - UC 128 2,417 2,545
CSL 0 1,592 1,592
CSU n/a 3,586 3,586
Other-Non-UC n/a 86,215 86,215
_______ ______ _____
109,073 180,428 289,501
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 7.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 9:42
Average session length (minutes:seconds) 13:38
Longest session recorded (minutes:seconds) 800:20
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 65.8
Retrievals per search - standard deviation 1060.3
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 66.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 35,176 35.5%
DISPLAY (excluding automatic displays) 32,867 33.2%
ACFIND 26 0.0%
BROWSE 140 0.1%
SELECT 120 0.1%
HELP 566 0.6%
EXPLAIN 660 0.7%
SET/RESET 2,888 2.9%
SHOW 203 0.2%
AT 1,877 1.9%
ADD ON (AND, OR, AND NOT) 1,304 1.3%
LOGON or LOGOFF 17,567 17.7%
COMMENT 0 0.0%
SAVE 758 0.8%
USE 684 0.7%
OTHER 4,146 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 6,212 16.8% 1,458 23.5% 11 87.5 384.7
AUTHOR 1,517 4.1% 357 23.5% 14 145.8 707.7
CORPORATE AUTH 387 1.0% 159 41.1% 30 494.4 2066.8
EXACT CA 17 0.0% 10 58.8% 27 37.9 50.4
TITLE WORD 8,183 22.2% 2,552 31.2% 4 45.3 358.6
EXACT TITLE 6,599 17.9% 1,881 28.5% 2 17.1 132.5
TITLE -> TW 737 2.0% 188 25.5% 8 49.1 163.2
TITLE -> XT 888 2.4% 361 40.7% 1 5.3 26.1
SUBJECT 1,728 4.7% 572 33.1% 54 519.0 4346.2
EXACT SUBJECT 95 0.3% 17 17.9% 64 493.8 990.1
PERIODICAL 5,642 15.3% 1,166 20.7% 5 97.4 1535.9
EXACT PE 2,436 6.6% 499 20.5% 2 16.9 86.2
RPE 1 0.0% 0 0.0% 106 106.0 0.0
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 87 0.2% 19 21.8% 25 345.3 1500.5
DATE 544 1.5% 150 27.6% 3 122.9 1318.0
FORM 279 0.8% 62 22.2% 16 220.3 1022.6
NUMBER* 74 0.2% 24 32.4% 2 246.8 1290.4
MUSIC* 6 0.0% 5 83.3% 2,314 2314.0 0.0
SERIES 812 2.2% 256 31.5% 5 46.7 119.7
UNIFORM TITLE 9 0.0% 7 77.8% 98 97.5 136.5
Other indexes 641 1.7% 248 38.7% 1 66.5 658.8
* 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 2,083 6.0% 621 29.8% 3 81.1 807.1
Single 32,632 94.0% 8,723 26.7% 4 88.5 1214.9
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 26 21.5% 6 23.1% 5 22.3 49.9
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 2 1.7% 1 50.0% 20 20.0 0.0
SUBJECT 86 71.1% 19 22.1% 33 629.1 3527.4
EXACT SUBJECT 5 4.1% 2 40.0% 5 295.7 503.4
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 2 1.7% 0 0.0% 12 11.5 14.8
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 136 100% 30 22.1% 21 413.5 2812.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.6%
BRIEF 63.8%
LONG 10.2%
MARC 3.8%
FIELDS 2.5%
TAG 4.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 4.1%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.0%
Ten most frequent errors:
1. NS command - no next screen 32.1%
2. First word of command is invalid 25.1%
3. FIND command with invalid index name 11.5%
4. DISPLAY command contains invalid word 4.4%
5. Max. # of ports to a Z39 db are in use 2.7%
6. KW search in database w/o KW index 2.2%
7. Search term missing from search command 2.2%
8. PS command - no previous screen 2.2%
9. DISPLAY command - no FIND results 2.1%
10. Valid command at an inappropriate time 1.3%
11. All others 14.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.8%
2. FIND 11.8%
3. INDEXES 8.5%
4. COMMAND WORDS 5.3%
5. PASSWORDS 4.7%
6. Unrecognized term 4.5%
7. DATABASES 3.2%
8. DISPLAY 2.6%
9. ADD-ON SEARCH 2.3%
10. CATALOG 1.7%
11. All others 29.7%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.8%
2. First word of command is invalid 13.7%
3. FIND command with invalid index name 11.7%
4. DISPLAY command - middle of >1 screen 5.2%
5. NS command - no next screen 3.2%
6. DISPLAY command-first of >1 screen 2.9%
7. DISPLAY command-complete in one screen 2.7%
8. FIND command retrieves >1 book 2.4%
9. F/BR with index invalid in current DB 2.3%
10. DISPLAY command - last of >1 screen 1.8%
11. All others 30.3%
Ten most frequent SHOW requests:
1. HISTORY 62.5%
2. SEARCH 10.4%
3. GLOSSARY 9.4%
4. SETTINGS 3.6%
5. MAIL STATUS 2.6%
6. SYSTEM NEWS 2.1%
7. DATABASE NEWS 1.6%
8. SYSTEMS INFORMATION 1.6%
9. CSL INFORMATION 1.0%
10. Z39.50 NEWS 0.5%
11. All others 4.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)