Poor performance showing BW data in NW portal

Hi all,
we have a problem with showing data from BW in a NetWeaver Portal here.
There is a table with several different entries displayed on a portal page. When you click one entry some details for this are shown in an area below the table.
Now the problem is that every time you click one entry it lasts around 5 seconds until the details are shown which is much to long.
The data to be shown comes from a BW system.
I know that there are a lot of parameters you can check in BW to optimize performance. But maybe I have a common problem here and one of you can tell me which parameters should be check first.
Thanks for all answers in advance!
Best Regards,
Torben

Dear Torben,
The basic things which we need to check in our BW system is:
1) Increase the parallel processing during extraction
2) Selective loading.
3) Every job will be having a priority (A, B, C A being the highest and C being the lowest), choose this based on your scenario.
4) Check with the basis team for the sizing of your server
5) You can increase the number of background processes during data loads. This can be done by making dialog processes as Background processes.
For this you need basis inputs. (This is done in some profile settings by making the system behave differently during loads. (something like day mode/night mode))
6) There are some maintenance jobs that should run regularly in any SAP box to ensure proper functioning.
7) Use of start routines is preferred instead of update routines.
Assign points if these helps u...
Regards,
KK.

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Adobe Reader XI Shows Poor Performance.

Hi there!
I've been using acrobat for a few years now , but the Acrobat Reader XI , its showing poor performance rendering a Big PDF file Like 2.8MB (its a MS Proyect Exported Document)..and I have tested it with another PDF viewers and it works fine. Any AR Bug maybe. FYI it complete freezes the Computer. (Im using a Core i3 W7 Pro x64 bits , 4GB , so the PC is not the problem) . I have tested in 2 pcs and i got the same results.

I just posted the below on another discussion. But read below and give it a try.
I am running Windows 7 64-bit with Adobe Reader 11.0.3 and am experiencing the same issue. Opening PDFs takes a long time and there is a delay and it freezes for a period of time and then it will unfreeze and becomes available.
What I have found to be the issue in my case is that Protected Mode is enabled. If you open Adobe Reader and click on Edit and Preferences then go to the section Security (Enhanced). You can turn "Enable Protected Mode at Startup" off by unchecking the check box.
After that give it a try and see if that doesn't clear up the issue.
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Possible to show live data within Performance Widget??

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Anyone know if this is possible?? It seems that any performance widgets pull data from the DW db rather than the OpsMan main db..
Cheers,
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Hi
SCOM write data in parallel to SCOM DB and DW ,
The chart is optimized to show no more than 100 data points per line to improve querying and rendering performance. It is important to consider this when configuring the time range for the following reasons:
If the time range is less than 100 hours the widget will show raw data from the data warehouse
If the time range is between 100 hours and 100 days the widget will show hourly aggregated data
If the time range is greater than 100 days the widget will show daily aggregated data
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similar to what PerfMon does in Windows.
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Regards
sridhar v

Poor performance and high number of gets on seemingly simple insert/select

Versions & config:
Database : 10.2.0.4.0
Application : Oracle E-Business Suite 11.5.10.2
2 node RAC, IBM AIX 5.3Here's the insert / select which I'm struggling to explain why it's taking 6 seconds, and why it needs to get > 24,000 blocks:
INSERT INTO WF_ITEM_ATTRIBUTE_VALUES ( ITEM_TYPE, ITEM_KEY, NAME, TEXT_VALUE,
NUMBER_VALUE, DATE_VALUE ) SELECT :B1 , :B2 , WIA.NAME, WIA.TEXT_DEFAULT,
WIA.NUMBER_DEFAULT, WIA.DATE_DEFAULT FROM WF_ITEM_ATTRIBUTES WIA WHERE
WIA.ITEM_TYPE = :B1
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          4           0
Execute      2      3.44       6.36          2      24297        198          36
Fetch        0      0.00       0.00          0          0          0           0
total        3      3.44       6.36          2      24297        202          36
Misses in library cache during parse: 1
Misses in library cache during execute: 2Also from the tkprof output, the explain plan and waits - virtually zero waits:
Rows     Execution Plan
      0 INSERT STATEMENT   MODE: ALL_ROWS
      0   TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF 'WF_ITEM_ATTRIBUTES' (TABLE)
      0    INDEX   MODE: ANALYZED (RANGE SCAN) OF 'WF_ITEM_ATTRIBUTES_PK' (INDEX (UNIQUE))
Elapsed times include waiting on following events:
Event waited on                             Times   Max. Wait Total Waited
----------------------------------------   Waited ---------- ------------
library cache lock                             12        0.00          0.00
gc current block 2-way                         14        0.00          0.00
db file sequential read                         2        0.01          0.01
row cache lock                                 24        0.00          0.01
library cache pin                               2        0.00          0.00
rdbms ipc reply                                 1        0.00          0.00
gc cr block 2-way                               4        0.00          0.00
gc current grant busy                           1        0.00          0.00
********************************************************************************The statement was executed 2 times. I know from slicing up the trc file that :
exe #1 : elapsed = 0.02s, query = 25, current = 47, rows = 11
exe #2 : elapsed = 6.34s, query = 24272, current = 151, rows = 25
If I run just the select portion of the statement, using bind values from exe #2, I get small number of gets (< 10), and < 0.1 secs elapsed.
If I make the insert into an empty, non-partitioned table, I get :
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.01       0.08          0        137         53          25
Fetch        0      0.00       0.00          0          0          0           0
total        2      0.01       0.08          0        137         53          25and same explain plan - using index range scan on WF_Item_Attributes_PK.
This problem is part of testing of a database upgrade and country go-live. On a 10.2.0.3 test system (non-RAC), the same insert/select - using the real WF_Item_Attributes_Value table takes :
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.00       0.10         10         27        136          25
Fetch        0      0.00       0.00          0          0          0           0
total        2      0.00       0.10         10         27        136          25So I'm struggling to understand why the performance on the 10.2.0.4 RAC system is so much worse for this query, and why it's doing so many gets. Suggestions, thoughts, ideas welcomed.
I've verified system level things - CPUs weren't/aren't max'd out, no significant paging/swapping activity, run queue not long. AWR report for the time period shows nothing unusual.
further info on the objects concerned:
query source table :
WF_Item_Attributes_PK : unique index on Item_Type, Name. Index has 144 blocks, non-partitioned
WF_Item_Attributes tbl : non-partitioned, 160 blocks
insert destination table:
WF_Item_Attribute_Values:
range partitioned on Item_Type, and hash sub-partitioned on Item_Key
both executions of the insert hit the partition with the most data : 127,691 blocks total ; 8 sub-partitions with 15,896 to 16,055 blocks per sub-partition.
WF_Item_Attribute_Values_PK : unique index on columns Item_Type, Item_Key, Name. Range/hash partitioned as per table.
Bind values:
exe #1 : Item_Type (:B1) = OEOH, Item_Key (:B2) = 1048671
exe #2 : Item_Type (:B1) = OEOL, Item_Key (:B2) = 4253168
number of rows in WF_Item_Attribute_Values for Item_Type = OEOH : 1132587
number of rows in WF_Item_Attribute_Values for Item_Type = OEOL : 18763670
The non-RAC 10.2.0.3 test system (clone of Production from last night) has higher row counts for these 2.
thanks and regards
Ivan

hi Sven,
Thanks for your input.
1) I guess so, but I haven't lifted the lid to delve inside the form as to which one. I don't think it's the cause though, as I got poor performance running the insert statement with my own value (same statement, using my own bind value).
2) In every execution plan I've seen, checked, re-checked, it uses a range scan on the primary key. It is the most efficient I think, but the source table is small in any case - table 160 blocks, PK index 144 blocks. So I think it's the partitioned destination table that's the problem - but we only see this issue on the 10.2.0.4 pre-production (RAC) system. The 10.2.0.3 (RAC) Production system doesn't have it. This is why it's so puzzling to me - the source table read is fast, and does few gets.
3) table storage details below - the Item_Types being used were 'OEOH' (fast execution) and 'OEOL' (slow execution). Both hit partition WF_ITEM49, hence I've only expanded the subpartition info for that one (there are over 600 sub-partitions).
============= From DBA_Part_Tables : Partition Type / Count =============
PARTITI SUBPART PARTITION_COUNT DEF_TABLESPACE_NAME
RANGE   HASH                 77 APPS_TS_TX_DATA
1 row selected.
============= From DBA_Tab_Partitions : Partition Names / Tablespaces =============
Partition Name       TS Name         High Value           High Val Len
WF_ITEM1             APPS_TS_TX_DATA 'A1'                            4
WF_ITEM2             APPS_TS_TX_DATA 'AM'                            4
WF_ITEM3             APPS_TS_TX_DATA 'AP'                            4
WF_ITEM47            APPS_TS_TX_DATA 'OB'                            4
WF_ITEM48            APPS_TS_TX_DATA 'OE'                            4
WF_ITEM49            APPS_TS_TX_DATA 'OF'                            4
WF_ITEM50            APPS_TS_TX_DATA 'OK'                            4
WF_ITEM75            APPS_TS_TX_DATA 'WI'                            4
WF_ITEM76            APPS_TS_TX_DATA 'WS'                            4
WF_ITEM77            APPS_TS_TX_DATA MAXVALUE                        8
77 rows selected.
============= From dba_part_key_columns : Partition Columns =============
NAME                           OBJEC Column Name                    COLUMN_POSITION
WF_ITEM_ATTRIBUTE_VALUES       TABLE ITEM_TYPE                                    1
1 row selected.
PPR1 sql> @q_tabsubpart wf_item_attribute_values WF_ITEM49
============= From DBA_Tab_SubPartitions : SubPartition Names / Tablespaces =============
Partition Name       SUBPARTITION_NAME              TS Name         High Value           High Val Len
WF_ITEM49            SYS_SUBP3326                   APPS_TS_TX_DATA                                 0
WF_ITEM49            SYS_SUBP3328                   APPS_TS_TX_DATA                                 0
WF_ITEM49            SYS_SUBP3332                   APPS_TS_TX_DATA                                 0
WF_ITEM49            SYS_SUBP3331                   APPS_TS_TX_DATA                                 0
WF_ITEM49            SYS_SUBP3330                   APPS_TS_TX_DATA                                 0
WF_ITEM49            SYS_SUBP3329                   APPS_TS_TX_DATA                                 0
WF_ITEM49            SYS_SUBP3327                   APPS_TS_TX_DATA                                 0
WF_ITEM49            SYS_SUBP3325                   APPS_TS_TX_DATA                                 0
8 rows selected.
============= From dba_part_key_columns : Partition Columns =============
NAME                           OBJEC Column Name                    COLUMN_POSITION
WF_ITEM_ATTRIBUTE_VALUES       TABLE ITEM_KEY                                     1
1 row selected.
from DBA_Segments - just for partition WF_ITEM49 :
Segment Name                        TSname       Partition Name       Segment Type     BLOCKS     Mbytes    EXTENTS Next Ext(Mb)
WF_ITEM_ATTRIBUTE_VALUES            @TX_DATA     SYS_SUBP3332         TblSubPart        16096     125.75       1006         .125
WF_ITEM_ATTRIBUTE_VALUES            @TX_DATA     SYS_SUBP3331         TblSubPart        16160     126.25       1010         .125
WF_ITEM_ATTRIBUTE_VALUES            @TX_DATA     SYS_SUBP3330         TblSubPart        16160     126.25       1010         .125
WF_ITEM_ATTRIBUTE_VALUES            @TX_DATA     SYS_SUBP3329         TblSubPart        16112    125.875       1007         .125
WF_ITEM_ATTRIBUTE_VALUES            @TX_DATA     SYS_SUBP3328         TblSubPart        16096     125.75       1006         .125
WF_ITEM_ATTRIBUTE_VALUES            @TX_DATA     SYS_SUBP3327         TblSubPart        16224     126.75       1014         .125
WF_ITEM_ATTRIBUTE_VALUES            @TX_DATA     SYS_SUBP3326         TblSubPart        16208    126.625       1013         .125
WF_ITEM_ATTRIBUTE_VALUES            @TX_DATA     SYS_SUBP3325         TblSubPart        16128        126       1008         .125
WF_ITEM_ATTRIBUTE_VALUES_PK         @TX_IDX      SYS_SUBP3332         IdxSubPart        59424     464.25       3714         .125
WF_ITEM_ATTRIBUTE_VALUES_PK         @TX_IDX      SYS_SUBP3331         IdxSubPart        59296     463.25       3706         .125
WF_ITEM_ATTRIBUTE_VALUES_PK         @TX_IDX      SYS_SUBP3330         IdxSubPart        59520        465       3720         .125
WF_ITEM_ATTRIBUTE_VALUES_PK         @TX_IDX      SYS_SUBP3329         IdxSubPart        59104     461.75       3694         .125
WF_ITEM_ATTRIBUTE_VALUES_PK         @TX_IDX      SYS_SUBP3328         IdxSubPart        59456      464.5       3716         .125
WF_ITEM_ATTRIBUTE_VALUES_PK         @TX_IDX      SYS_SUBP3327         IdxSubPart        60016    468.875       3751         .125
WF_ITEM_ATTRIBUTE_VALUES_PK         @TX_IDX      SYS_SUBP3326         IdxSubPart        59616     465.75       3726         .125
WF_ITEM_ATTRIBUTE_VALUES_PK         @TX_IDX      SYS_SUBP3325         IdxSubPart        59376    463.875       3711         .125
sum                                                                                               4726.5
[the @ in the TS Name is my shortcode, as Apps stupidly prefixes every ts with "APPS_TS_"]
The Tablespaces used for all subpartitions are UNIFORM extent mgmt, AUTO segment_space_management ; LOCAL extent mgmt.regards
Ivan

Safari hangs and poor performance in MBPR (Mid 2012)

Safari hangs and poor performance in MBPR (Mid 2012)? OS X 10.10.2 is up to date

Please answer as many of the following questions as you can. You may already have answered some of them. In that case, there's no need to repeat the answers.
Back up all data before making any changes.
Have you restarted your router and your broadband device (if they're separate) since you first noticed the problem? If not, do that now and see whether there's any change.
If your browser is Safari, then from the Safari menu bar, select
Safari ▹ Preferences... ▹ Privacy ▹ Remove All Website Data
and confirm. If the Downloads button (with the icon of a downward-pointing arrow) is showing in the toolbar, click it and then click Clear in the box that appears. The download history will be removed. Any change?
If you're running OS X 10.9 or later, select the Advanced tab in the Preferences window and uncheck the box marked
Stop plug-ins to save power
Any change?
Quit and relaunch the browser. Any change?
Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
While logged in as Guest, you won’t have access to any of your documents or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this behavior; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Are any other web browsers installed, and are they the same? What about other Internet applications, such as iTunes and the App Store?
If other browsers and Internet applications are also affected, follow these instructions and test. Any change?
If Parental Controls is active for any user, please turn it off and test. Any change?
If only Safari is affected, launch the Activity Monitor application and enter "web" (without the quotes) in the search box. If a process named "Safari Web Content" is shown in red or is using more than about 5% of a CPU, select it and force it to quit by clicking the X or Quit Process button in the toolbar of the window. There may be more than one such process. Any improvement?
Follow the instructions in this support article. Any change?
Open the iCloud preference pane and uncheck the box marked Photos, if it's checked. Any change?
Are there any other devices on the same network that can browse the Web, and are they affected?
If you can test Safari on another network, is it the same there?
If you connect to your router with Wi-Fi and you can also connect with Ethernet, do that and turn off Wi-Fi. Any difference?

Poor performance of BLOB queries using ODBC

I'm getting very poor performance when querying a BLOB column using ODBC. I'm using an Oracle 10g database and the Oracle 10g ODBC driver on Windows XP.
I create two tables:
create table t1 ( x int primary key, y raw(2000) );
create table t2 ( x int primary key, y blob );
Then I load both tables with the same data. Then I run the following queries using ODBC:
SELECT x, y FROM t1;
SELECT x, y FROM t2;
I find that the BLOB query takes about 10 times longer than the RAW query to execute.
However, if I execute the same queries in SQL*Plus, the BLOB query is roughly as fast as the RAW query. So the problem seems to be ODBC-related.
Has anyone else come across this problem ?
Thanks.

Hi Biren,
By GUID, are you referring to the Oracle Portal product?

Shared nothing live migration over SMB. Poor performance

Hi,
I´m experiencing really poor performance when migrating VMs between newly installed server 2012 R2 Hyper-V hosts.
Hardware:
Dell M620 blades
256Gb RAM
2*8C Intel E5-2680 CPUs
Samsung 840 Pro 512Gb SSD running in Raid1
6* Intel X520 10G NICs connected to Force10 MXL enclosure switches
The NICs are using the latest drivers from Intel (18.7) and firmware version 14.5.9
The OS installation is pretty clean. Its Windows Server 2012 R2 + Dell OMSA + Dell HIT 4.6
I have removed the NIC teams and vmSwitch/vNICs to simplify the problem solving process. Now there is one nic configured with one IP. RSS is enabled, no VMQ.
The graphs are from 4 tests.
Test 1 and 2 are nttcp-tests to establish that the network is working as expected.
Test 3 is a shared nothing live migration of a live VM over SMB
Test 4 is a storage migration of the same VM when shut down. The VMs is transferred using BITS over http.
It´s obvious that the network and NICs can push a lot of data. Test 2 had a throughput of 1130MB/s (9Gb/s) using 4 threads. The disks can handle a lot more than 74MB/s, proven by test 4.
While the graph above doesn´t show the cpu load, I have verified that no cpu core was even close to running at 100% during test 3 and 4.
Any ideas?
Test
Config
Vmswitch
RSS
VMQ
Live Migration Config
Throughput (MB/s)
NTtcp
NTttcp.exe -r -m 1,*,172.17.20.45 -t 30
No
Yes
No
N/A
500
NTtcp
NTttcp.exe -r -m 4,*,172.17.20.45 -t 30
No
Yes
No
N/A
1130
Shared nothing live migration
Online VM, 8GB disk, 2GB RAM. Migrated from host 1 -> host2
No
Yes
No
Kerberos, Use SMB, any available net
74
Storage migration
Offline VM, 8Gb disk. Migrated from host 1 -> host2
No
Yes
No
Unencrypted BITS transfer
350

Hi Per Kjellkvist,
Please try to change the "advanced features"settings of "live migrations" in "Hyper-v settings" , select "Compression" in "performance options" area .
Then test 3 and 4 .
Best Regards
Elton Ji
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IPad shows "No Data" for Videos when I have movies stored.

Short version:
I've had lots of issues with downloading movies to my iPad from iTunes. When it works, the "videos" section under Settings > General > Usage shows "No data" as if it's not reading the storage. I'll have 6 movies but it shows nothing stored on the iPad.
Detailed version:
I'm on my 3rd or 4th try of "Erase all settings and content" without using an iCloud back up. My 3rd gen iPad will work fine for a month or more after that then start having tons of problems with downloading movies and performace. I'll set a movie to download from iTunes, go do something else and my iPad will become so slow its unusable. The downloads will fail but not alert me, they just restart and loop repeatedly. As of now it's working fine but my third party warranty is running out and I need to decide if somethings really wrong with it or is this an issue with iOS 7. I've taken it to the genius bar, the guy suggested I plug it into iTunes, download a fresh OS and start over again. Since then, its been largely fine. Only one movie failed and tried again then worked. The performance has been fine but I've been burned by this before...its fine for a while then goes to complete crap. I've also had the WIFI showing as connected but will not recieve any data until I simply restart and its fine. This has happened every time I've reset so its not isolated to one glitchy install.
I've asked for help before but no one has ever replied, if someone can give me a suggestion whether to tough it out or make a claim and pay $50 for a refurbished iPad that would be very helpful. If you need more details just ask, I've done all I can think of.

Bump - Can someone please help?

Apple maps has received a poor performance rating just after introduction of the iPhone 5. I am running google maps app on the phone. Siri cannot seem to get me to a specific address. Where does the problem lie? Thanks.

Apple maps has received a poor performance rating just after introduction of the iPhone 5. I am running Google Maps app on the phone. SIRI cannot seem to get me to a specific address. Where does the problem lie? Also can anyone tell me the hierarchy of use between the Apple Maps, SIRI, and Google maps when the app is on the phone? How do you choose one over the other as the default map usage? Or better still how do you suppress SIRI from using the Apple maps app when requesting a "go to"?
I have placed an address location into the CONTACTS list and when I ask SIRI to "take me there" it found a TOTALLY different location in the metro area with the same street name. I have included the address, the quadrant, (NE) and the ZIP code into the CONTACTS list. As it turns out, no amount of canceling the trip or relocating the address in the CONTACTS list line would prevent SIRI from taking me to this bogus location. FINALLY I typed in Northeast for NE in the CONTACTS list (NE being the accepted method of defining the USPS location quadrant) , canceled the current map route and it finally found the correct address. This problem would normally not demand such a response from me to have it fixed but the address is one of a hospital in the center of town and this hospital HAS a branch location in a similar part of town (NOT the original address SIRI was trying to take me to). This screw up could be dangerous if not catastrophic to someone who was looking for a hospital location fast and did not know of these two similar locations. After all the whole POINT of directions is not just whimsical pasttime or convenience. In a pinch people need to rely on this function. OR, are my expectations set too high?
How does the iPhone select between one app or the other (Apple Maps or Gppgle Maps) as it relates to SIRI finding and showing a map route?
Why does SIRI return an address that is NOT the correct address nor is the returned location in the requested ZIP code?
Is there a known bug in the CONTACTS list that demands the USPS quadrant ID be spelled out, as opposed to abreviated, to permit SIRI to do its routing?
Thanks for any clarification on these matters.

siri will only use apple maps, this cannot be changed. you could try google voice in the google app.

Poor performance of the BDB cache

I'm experiencing incredibly poor performance of the BDB cache and wanted to share my experience, in case anybody has any suggestions.
Overview
Stone Steps maintains a fork of a web log analysis tool - the Webalizer (http://www.stonesteps.ca/projects/webalizer/). One of the problems with the Webalizer is that it maintains all data (i.e. URLs, search strings, IP addresses, etc) in memory, which puts a cap on the maximum size of the data set that can be analyzed. Naturally, BDB was picked as the fastest database to maintain analyzed data on disk set and produce reports by querying the database. Unfortunately, once the database grows beyond the cache size, overall performance goes down the drain.
Note that the version of SSW available for download does not support BDB in the way described below. I can make the source available for you, however, if you find your own large log files to analyze.
The Database
Stone Steps Webalizer (SSW) is a command-line utility and needs to preserve all intermediate data for the month on disk. The original approach was to use a plain-text file (webalizer.current, for those who know anything about SSW). The BDB database that replaced this plain text file consists of the following databases:
sequences (maintains record IDs for all other tables)
urls -primary database containing URL data - record ID (key), URL itself, grouped data, such as number of hits, transfer size, etc)
urls.values - secondary database that contains a hash of the URL (key) and the record ID linking it to the primary database; this database is used for value lookups)
urls.hits - secondary database that contains the number of hits for each URL (key) and the record ID to link it to the primary database; this database is used to order URLs in the report by the number of hits.
The remaining databases are here just to indicate the database structure. They are the same in nature as the two described above. The legend is as follows: (s) will indicate a secondary database, (p) - primary database, (sf) - filtered secondary database (using DB_DONOTINDEX).
urls.xfer (s), urls.entry (s), urls.exit (s), urls.groups.hits (sf), urls.groups.xfer (sf)
hosts (p), hosts.values (s), hosts.hits (s), hosts.xfer (s), hosts.groups.hits (sf), hosts.groups.xfer (sf)
downloads (p), downloads.values (s), downloads.xfer (s)
agents (p), agents.values (s), agents.values (s), agents.hits (s), agents.visits (s), agents.groups.visits (sf)
referrers (p), referrers.values (s), referrers.values (s), referrers.hits (s), referrers.groups.hits (sf)
search (p), search.values (s), search.hits (s)
users (p), users.values (s), users.hits (s), users.groups.hits (sf)
errors (p), errors.values (s), errors.hits (s)
dhosts (p), dhosts.values (s)
statuscodes (HTTP status codes)
totals.daily (31 days)
totals.hourly (24 hours)
totals (one record)
countries (a couple of hundred countries)
system (one record)
visits.active (active visits - variable length)
downloads.active (active downloads - variable length)
All these databases (49 of them) are maintained in a single file. Maintaining a single database file is a requirement, so that the entire database for the month can be renamed, backed up and used to produce reports on demand.
Database Size
One of the sample Squid logs I received from a user contains 4.4M records and is about 800MB in size. The resulting database is 625MB in size. Note that there is no duplication of text data - only nodes and such values as hits and transfer sizes are duplicated. Each record also contains some small overhead (record version for upgrades, etc).
Here are the sizes of the URL databases (other URL secondary databases are similar to urls.hits described below):
urls (p):
8192 Underlying database page size
2031 Overflow key/data size
1471636 Number of unique keys in the tree
1471636 Number of data items in the tree
193 Number of tree internal pages
577738 Number of bytes free in tree internal pages (63% ff)
55312 Number of tree leaf pages
145M Number of bytes free in tree leaf pages (67% ff)
2620 Number of tree overflow pages
16M Number of bytes free in tree overflow pages (25% ff)
urls.hits (s)
8192 Underlying database page size
2031 Overflow key/data size
2 Number of levels in the tree
823 Number of unique keys in the tree
1471636 Number of data items in the tree
31 Number of tree internal pages
201970 Number of bytes free in tree internal pages (20% ff)
45 Number of tree leaf pages
243550 Number of bytes free in tree leaf pages (33% ff)
2814 Number of tree duplicate pages
8360024 Number of bytes free in tree duplicate pages (63% ff)
0 Number of tree overflow pages
The Testbed
I'm running all these tests using the latest BDB (v4.6) built from the source on Win2K3 server (release version). The test machine is 1.7GHz P4 with 1GB of RAM and an IDE hard drive. Not the fastest machine, but it was able to handle a log file like described before at a speed of 20K records/sec.
BDB is configured in a single file in a BDB environment, using private memory, since only one process ever has access to the database).
I ran a performance monitor while running SSW, capturing private bytes, disk read/write I/O, system cache size, etc.
I also used a code profiler to analyze SSW and BDB performance.
The Problem
Small log files, such as 100MB, can be processed in no time - BDB handles them really well. However, once the entire BDB cache is filled up, the machine goes into some weird state and can sit in this state for hours and hours before completing the analysis.
Another problem is that traversing large primary or secondary databases is a really slow and painful process. It is really not that much data!
Overall, the 20K rec/sec quoted above drop down to 2K rec/sec. And that's all after most of the analysis has been done, just trying to save the database.
The Tests
SSW runs in two modes, memory mode and database mode. In memory mode, all data is kept in memory in SSW's own hash tables and then saved to BDB at the end of each run.
In memory mode, the entire BDB is dumped to disk at the end of the run. First, it runs fairly fast, until the BDB cache is filled up. Then writing (disk I/O) goes at a snail pace, at about 3.5MB/sec, even though this disk can write at about 12-15MB/sec.
Another problem is that the OS cache gets filled up, chewing through all available memory long before completion. In order to deal with this problem, I disabled the system cache using the DB_DIRECT_DB/LOG options. I could see OS cache left alone, but once BDB cache was filed up, processing speed was as good as stopped.
Then I flipped options and used DB_DSYNC_DB/LOG options to disable OS disk buffering. This improved overall performance and even though OS cache was filling up, it was being flushed as well and, eventually, SSW finished processing this log, sporting 2K rec/sec. At least it finished, though - other combinations of these options lead to never-ending tests.
In the database mode, stale data is put into BDB after processing every N records (e.g. 300K rec). In this mode, BDB behaves similarly - until the cache is filled up, the performance is somewhat decent, but then the story repeats.
Some of the other things I tried/observed:
* I tried to experiment with the trickle option. In all honesty, I hoped that this would be the solution to my problems - trickle some, make sure it's on disk and then continue. Well, trickling was pretty much useless and didn't make any positive impact.
* I disabled threading support, which gave me some performance boost during regular value lookups throughout the test run, but it didn't help either.
* I experimented with page size, ranging them from the default 8K to 64K. Using large pages helped a bit, but as soon as the BDB cached filled up, the story repeated.
* The Db.put method, which was called 73557 times while profiling saving the database at the end, took 281 seconds. Interestingly enough, this method called ReadFile function (Win32) 20000 times, which took 258 seconds. The majority of the Db.put time was wasted on looking up records that were being updated! These lookups seem to be the true problem here.
* I tried libHoard - it usually provides better performance, even in a single-threaded process, but libHoard didn't help much in this case.

I have been able to improve processing speed up to
6-8 times with these two techniques:
1. A separate trickle thread was created that would
periodically call DbEnv::memp_trickle. This works
especially good on multicore machines, but also
speeds things up a bit on single CPU boxes. This
alone improved speed from 2K rec/sec to about 4K
rec/sec.Hello Stone,
I am facing a similar problem, and I too hope to resolve the same with memp_trickle. I had these queries.
1. what was the % of clean pages that you specified?
2. What duration were you clling this thread to call memp_trickle?
This would give me a rough idea about which to tune my app. Would really appreciate if you can answer these queries.
Regards,
Nishith.
>
2. Maintaining multiple secondary databases in real
time proved to be the bottleneck. The code was
changed to create secondary databases at the end of
the run (calling Db::associate with the DB_CREATE
flag), right before the reports are generated, which
use these secondary databases. This improved speed
from 4K rec/sec to 14K rec/sec.

Report shows no data in the Viewer

Hello,
i'm new to Crystal Reports and i have to develop a few Reports.
I load the data with a stored procedure form a sql-server. This is working and i get all datas i need. But the Report Viewer doesn't show any data.
I don't know why.
If i do it over a select statement and not a stored procedure, the Report Viewer shows me each data set up to 9 times.
I'm working with three tables.
Here is the c# code i wrote.
command = new SqlCommand();
command.Connection = connection;
command.CommandType = CommandType.StoredProcedure;
SqlParameter myParam = new SqlParameter("@FormulareAuftragNr", SqlDbType.VarChar, 5);
myParam.Value = AuftragNr;
command.Parameters.Add(myParam);
command.CommandText = "dbo.Abfrage_Arbeitsplan_Bericht";
connection.Open();
SqlDataAdapter dataAdapter = new SqlDataAdapter(command);
ds = new DataSet("ABC");
dataAdapter.Fill(ds, "dbo.Abfrage_Arbeitsplan_Bericht");
druckarbeitsplan.SetDataSource(ds);
CR Version : latest
VS Version : 10.30319.1
OS : Windows 7
it is for an Windows App
Johannes

CR Version : latest
That is not enough info. All my content below is based on the assumption that you are using CRVS2010 (V. 13.x)...
The code does not show you loading an actual report(?). Also, I'm assuming that after:
druckarbeitsplan.SetDataSource(ds);
you have code to show the report in the viewer or you're printing exporting the report?
For datasets see [this|http://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes_boj/sdn_oss_boj_bi/sap(bD1lbiZjPTAwMQ==)/bc/bsp/spn/scn_bosap/notes%7B6163636573733d36393736354636443646363436353344333933393338323636393736354637333631373036453646373436353733354636453735364436323635373233443330333033303331333533323335333433333332%7D.do] KB. Also, make sure you are using the full 4.0 framework, not the client framework.
Ludek
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Got Enhancement ideas? Try the [SAP Idea Place|https://ideas.sap.com/community/products_and_solutions/crystalreports]

Invalid block count and poor performance

Hi - Can anyone help?
Running an early 2011 13' MBP on ML. For a year - 18 months I've noticed poor performance at times, consistently slow boot (sometimes 5 minutes to usable), occasional lockups and spotlight often reindexes itself and slows the system (much more than my previous MBP), I can't see anything that triggers it. I'm also getting recurring errors in Disk Utility of 'Invalid block count', every time I'll repair the disk (booting into recovery), but after a month of use the error will reappear. About three months ago I erased and reinstalled ML, some of my data was moved over in Time Machine but I didn't restore from it. The erase and reinstall hasn't made any difference and I'm still seeing the same issues. Hard disk SMART status appears to be fine.
Can anyone recommend any troubleshooting steps? I'm not sure what else to do, still under Applecare and was thinking maybe the HD isn't working correctly?
Cheers!

Performance.
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Startup - Slow Boot
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