MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 09/29/01 through 10/05/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 682 1,999 2,681
Davis 1,780 211 1,991
Irvine 554 0 554
Los Angeles 6 469 475
Riverside 401 81 482
San Diego 336 126 462
San Francisco 230 0 230
Santa Barbara 266 107 373
Santa Cruz 184 113 297
LBL 0 57 57
LLL 0 80 80
Other - UC 28 219 247
CSL 0 129 129
CSU n/a 139 139
Other-Non-UC n/a 3,729 3,729
_______ ______ _____
4,467 7,459 11,926
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 209 611 5,372
2-4 a.m. 151 370 2,455
4-6 a.m. 160 394 2,495
6-8 a.m. 427 1,079 8,648
8-10 a.m. 1,692 5,997 39,819
10-12 a.m. 2,512 9,260 59,357
12-2 p.m. 2,011 6,909 51,811
2-4 p.m. 2,177 8,046 48,542
4-6 p.m. 1,472 4,984 40,038
6-8 p.m. 508 1,697 11,683
8-10 p.m. 334 1,030 8,267
10-12 p.m. 273 756 6,095
__________ __________ __________ _________________
Total: 11,926 41,133 284,582
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,826 6,925 8,751
Davis 7,320 778 8,098
Irvine 2,014 0 2,014
Los Angeles 17 914 931
Riverside 1,381 198 1,579
San Diego 1,357 235 1,592
San Francisco 323 0 323
Santa Barbara 895 284 1,179
Santa Cruz 1,244 206 1,450
LBL 0 107 107
LLL 0 285 285
Other - UC 26 753 779
CSL 0 138 138
CSU n/a 641 641
Other-Non-UC n/a 13,266 13,266
_______ ______ _____
16,403 24,730 41,133
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,525 48,964 64,489
Davis 40,989 3,580 44,569
Irvine 14,926 0 14,926
Los Angeles 41 5,718 5,759
Riverside 11,131 1,189 12,320
San Diego 6,677 1,825 8,502
San Francisco 2,080 0 2,080
Santa Barbara 9,414 2,173 11,587
Santa Cruz 3,584 1,575 5,159
LBL 0 849 849
LLL 0 2,593 2,593
Other - UC 123 5,330 5,453
CSL 0 1,280 1,280
CSU n/a 6,020 6,020
Other-Non-UC n/a 98,996 98,996
_______ ______ _____
104,490 180,092 284,582
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 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 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:29
Average session length (minutes:seconds) 14:14
Longest session recorded (minutes:seconds) 948:29
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 69.8
Retrievals per search - standard deviation 1283.9
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 4.0%
Percent of long searches completed
(includes partial results) 63.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 39,364 35.8%
DISPLAY (excluding automatic displays) 35,843 32.6%
ACFIND 6 0.0%
BROWSE 271 0.2%
SELECT 205 0.2%
HELP 711 0.6%
EXPLAIN 777 0.7%
SET/RESET 3,057 2.8%
SHOW 482 0.4%
AT 2,777 2.5%
ADD ON (AND, OR, AND NOT) 1,738 1.6%
LOGON or LOGOFF 19,003 17.3%
COMMENT 1 0.0%
SAVE 647 0.6%
USE 653 0.6%
OTHER 4,405 4.0%
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 5,655 13.6% 1,322 23.4% 10 179.4 2941.3
AUTHOR 1,744 4.2% 448 25.7% 9 96.6 461.5
CORPORATE AUTH 371 0.9% 142 38.3% 15 722.6 3802.1
EXACT CA 13 0.0% 3 23.1% 35 827.3 2369.1
TITLE WORD 9,960 23.9% 3,131 31.4% 4 39.9 228.2
EXACT TITLE 6,219 14.9% 1,778 28.6% 2 20.6 125.6
TITLE -> TW 921 2.2% 209 22.7% 7 100.5 1079.8
TITLE -> XT 1,103 2.7% 477 43.2% 2 17.9 159.8
SUBJECT 2,309 5.5% 802 34.7% 38 429.0 3573.5
EXACT SUBJECT 114 0.3% 26 22.8% 87 625.3 1439.7
PERIODICAL 6,877 16.5% 1,385 20.1% 5 66.6 834.0
EXACT PE 2,778 6.7% 529 19.0% 3 22.1 229.0
RPE 5 0.0% 4 80.0% 161 161.0 0.0
XRP 1 0.0% 1 100% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 199 0.5% 30 15.1% 29 250.4 1298.8
DATE 849 2.0% 201 23.7% 4 47.2 161.2
FORM 617 1.5% 133 21.6% 19 97.6 204.6
NUMBER* 37 0.1% 4 10.8% 1 207.5 763.6
MUSIC* 8 0.0% 5 62.5% 2 9.3 13.6
SERIES 876 2.1% 287 32.8% 4 70.4 270.9
UNIFORM TITLE 22 0.1% 6 27.3% 2,213 1783.9 1665.5
Other indexes 937 2.3% 363 38.7% 1 11.2 99.3
* 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 2,432 6.3% 656 27.0% 3 47.4 178.0
Single 36,345 93.7% 9,910 27.3% 4 100.0 1585.6
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 4 1.6% 0 0.0% 8 7.5 5.2
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 234 96.3% 60 25.6% 31 114.5 339.2
EXACT SUBJECT 2 0.8% 0 0.0% 66 65.5 87.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 3 1.2% 0 0.0% 17 17.7 8.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 247 100% 60 24.3% 29 108.5 328.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.7%
BRIEF 65.9%
LONG 9.5%
MARC 4.1%
FIELDS 3.2%
TAG 3.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.3%
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 31.7%
2. First word of command is invalid 26.4%
3. FIND command with invalid index name 11.1%
4. DISPLAY command contains invalid word 3.9%
5. Search term missing from search command 3.2%
6. Max. # of ports to a Z39 db are in use 2.2%
7. PS command - no previous screen 2.0%
8. DISPLAY command - no FIND results 1.8%
9. KW search in database w/o KW index 1.6%
10. Command contains escape or arrow key 1.4%
11. All others 14.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.3%
2. FIND 20.8%
3. INDEXES 7.9%
4. COMMAND WORDS 4.1%
5. Unrecognized term 3.6%
6. DISPLAY 3.6%
7. PASSWORDS 3.1%
8. LOCATE (PE DB) 2.2%
9. CATALOG 1.7%
10. DATABASES 1.7%
11. All others 27.0%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.4%
2. First word of command is invalid 13.8%
3. FIND command with invalid index name 11.8%
4. 231 4.0%
5. DISPLAY command-first of >1 screen 3.8%
6. DISPLAY command - middle of >1 screen 3.2%
7. NS command - no next screen 2.9%
8. F/BR command with invalid search term 2.5%
9. FIND command retrieves >1 book 2.0%
10. DISPLAY command-complete in one screen 2.0%
11. All others 28.7%
Ten most frequent SHOW requests:
1. HISTORY 25.9%
2. NEWS 17.0%
3. STATISTICS 16.8%
4. BOOK STATISTICS 13.8%
5. SEARCH 5.9%
6. GLOSSARY 3.2%
7. SETTINGS 2.8%
8. MAIL STATUS 2.1%
9. CSL INFORMATION 1.1%
10. MEDLINE NEWS 1.1%
11. All others 10.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)