MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/07/01 through 04/13/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,139 2,867 4,006
Davis 2,063 219 2,282
Irvine 721 0 721
Los Angeles 36 696 732
Riverside 558 148 706
San Diego 377 161 538
San Francisco 326 0 326
Santa Barbara 310 221 531
Santa Cruz 507 176 683
LBL 0 78 78
LLL 0 67 67
Other - UC 69 286 355
CSL 0 152 152
CSU n/a 140 140
Other-Non-UC n/a 4,149 4,149
_______ ______ _____
6,106 9,360 15,466
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 214 786 5,080
2-4 a.m. 168 562 8,002
4-6 a.m. 187 705 6,532
6-8 a.m. 452 1,490 11,539
8-10 a.m. 1,747 6,381 45,885
10-12 a.m. 2,908 10,262 78,174
12-2 p.m. 2,807 10,253 73,884
2-4 p.m. 3,178 10,549 77,835
4-6 p.m. 2,058 6,624 51,446
6-8 p.m. 836 2,437 22,142
8-10 p.m. 550 1,710 10,910
10-12 p.m. 361 1,358 27,807
__________ __________ __________ _________________
Total: 15,466 53,117 419,236
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,230 8,495 11,725
Davis 8,481 923 9,404
Irvine 2,769 0 2,769
Los Angeles 158 1,887 2,045
Riverside 2,224 344 2,568
San Diego 1,035 232 1,267
San Francisco 1,462 0 1,462
Santa Barbara 1,180 718 1,898
Santa Cruz 1,747 492 2,239
LBL 0 101 101
LLL 0 223 223
Other - UC 94 814 908
CSL 0 271 271
CSU n/a 924 924
Other-Non-UC n/a 15,313 15,313
_______ ______ _____
22,380 30,737 53,117
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 25,663 67,838 93,501
Davis 50,736 4,056 54,792
Irvine 19,236 0 19,236
Los Angeles 1,183 12,271 13,454
Riverside 15,129 2,881 18,010
San Diego 7,379 2,576 9,955
San Francisco 6,797 0 6,797
Santa Barbara 8,863 5,281 14,144
Santa Cruz 9,761 4,442 14,203
LBL 0 992 992
LLL 0 2,039 2,039
Other - UC 598 6,489 7,087
CSL 0 2,462 2,462
CSU n/a 7,993 7,993
Other-Non-UC n/a 154,571 154,571
_______ ______ _____
145,345 273,891 419,236
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 4.2
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) 10:24
Average session length (minutes:seconds) 14:05
Longest session recorded (minutes:seconds) 544:20
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 60.8
Retrievals per search - standard deviation 915.7
Percent of searches completed with 0 results 26.0%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 63.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 51,211 35.6%
DISPLAY (excluding automatic displays) 48,463 33.7%
ACFIND 7 0.0%
BROWSE 223 0.2%
SELECT 180 0.1%
HELP 1,061 0.7%
EXPLAIN 1,011 0.7%
SET/RESET 4,072 2.8%
SHOW 379 0.3%
AT 3,206 2.2%
ADD ON (AND, OR, AND NOT) 1,884 1.3%
LOGON or LOGOFF 24,152 16.8%
COMMENT 0 0.0%
SAVE 1,086 0.8%
USE 1,053 0.7%
OTHER 5,670 3.9%
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 8,076 15.0% 1,829 22.6% 10 92.1 510.3
AUTHOR 1,991 3.7% 499 25.1% 13 106.6 387.3
CORPORATE AUTH 469 0.9% 186 39.7% 23 738.0 3288.7
EXACT CA 10 0.0% 2 20.0% 28 68.9 86.2
TITLE WORD 14,025 26.0% 3,860 27.5% 3 37.3 398.0
EXACT TITLE 7,824 14.5% 2,174 27.8% 2 16.5 102.3
TITLE -> TW 1,178 2.2% 280 23.8% 10 61.3 154.0
TITLE -> XT 1,504 2.8% 700 46.5% 1 10.2 80.4
SUBJECT 2,860 5.3% 997 34.9% 39 401.7 2084.4
EXACT SUBJECT 139 0.3% 26 18.7% 57 226.9 544.7
PERIODICAL 8,726 16.2% 1,880 21.5% 4 82.5 961.7
EXACT PE 3,578 6.6% 597 16.7% 2 23.8 321.8
RPE 2 0.0% 0 0.0% 22 22.0 18.4
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 120 0.2% 12 10.0% 33 443.7 2586.9
DATE 762 1.4% 196 25.7% 3 119.8 1649.8
FORM 555 1.0% 105 18.9% 19 505.2 6723.0
NUMBER* 77 0.1% 14 18.2% 2 17.0 116.4
MUSIC* 23 0.0% 9 39.1% 107 596.2 1212.0
SERIES 965 1.8% 281 29.1% 3 63.0 459.4
UNIFORM TITLE 18 0.0% 1 5.6% 62 208.6 293.8
Other indexes 1,004 1.9% 447 44.5% 1 8.0 50.0
* 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 3,164 6.3% 819 25.9% 3 73.9 661.0
Single 47,306 93.7% 12,412 26.2% 4 84.0 1103.5
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 18 8.7% 3 16.7% 5 31.6 47.4
CORPORATE AUTH 3 1.5% 2 66.7% 1 1.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 180 87.4% 39 21.7% 36 233.6 1138.4
EXACT SUBJECT 5 2.4% 1 20.0% 229 240.5 204.6
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 210 100% 45 21.4% 24 208.8 1054.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.3%
BRIEF 68.1%
LONG 9.1%
MARC 5.3%
FIELDS 3.0%
TAG 2.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.1%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. NS command - no next screen 30.7%
2. First word of command is invalid 26.9%
3. FIND command with invalid index name 12.1%
4. DISPLAY command contains invalid word 4.3%
5. Max. # of ports to a Z39 db are in use 2.5%
6. Search term missing from search command 2.5%
7. PS command - no previous screen 1.8%
8. KW search in database w/o KW index 1.7%
9. DISPLAY command - no FIND results 1.6%
10. Valid command at an inappropriate time 1.2%
11. All others 14.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.1%
2. FIND 13.9%
3. COMMAND WORDS 6.1%
4. INDEXES 5.8%
5. Unrecognized term 5.5%
6. PASSWORDS 4.4%
7. ADD-ON SEARCH 2.6%
8. DISPLAY 2.3%
9. DATABASES 2.2%
10. NRLF 1.9%
11. All others 33.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.6%
2. First word of command is invalid 15.9%
3. FIND command with invalid index name 11.3%
4. DISPLAY command - middle of >1 screen 4.2%
5. DISPLAY command-first of >1 screen 2.9%
6. NS command - no next screen 2.6%
7. FIND command retrieves >1 book 2.5%
8. DISPLAY command-complete in one screen 2.1%
9. F/BR with index invalid in current DB 2.1%
10. TW search with zero results 1.9%
11. All others 31.8%
Ten most frequent SHOW requests:
1. HISTORY 48.1%
2. SEARCH 9.6%
3. GLOSSARY 6.9%
4. SETTINGS 5.1%
5. DATABASE NEWS 4.0%
6. MAIL STATUS 3.7%
7. MEDLINE NEWS 2.7%
8. SYSTEM NEWS 2.4%
9. DATABASES 1.6%
10. PE LOADING STATISTICS 1.3%
11. All others 14.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)