Poor 5GHz Performance from Extreme ?

Hi
I have set up my new Extreme as a WiFi extender on my modem. I have turned off WiFi on the modem so there is only the Extreme. I have postioned the AE about 20 feet away at the bottom of my stairs from my study which is on the forst floor. So there is almnost a line of sight but not quite. I am getting a transmit rate of 176 (I assume Mbs)
Is this good ? I look at other makes such as Linksys or Asus and see better test results than the AE.

Your original setup sounds a bit complicated.. obviously it worked but if you had asked me I would say it has some issues.
In the old setup were the computers connecting to 5ghz signal.. or 2.4ghz.
In your new setup.. if you just use 2.4ghz is it working ok?
Remember the AC Extreme has much better range.. but the computers do not.. they have exactly the same range as before. Even higher gain antenna at 5ghz might not actually give you better range. If you test the air in the same room as the AC.. does it still fade out?
With the way you have it running now do you have the two computers in very different areas of the house?
Beam forming.. hmmm.. two different computers in two different areas could get confused.
Also there is too much auto happening. Can you lock the wireless channel.. on 5ghz at least and stick with the lower ones.. around 36-40 if possible. Apple made it auto rotate channels on the router end and auto rotate bands on the client end.. that can cause issues.

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Poor Network Performance from VPN sites

We are experiencing poor network performance when connecting from hardware VPN sites. VPN sites have Cisco Hardware VPN client 3002 which terminates to Cisco 3005 VPN concentrator. Geting upload/download speeds of 355/484kbsp from VPN to surewest.com. If I remove the VPN and connect laptop directly to dsl modem, speeds are 3mb up and 1mb down. Any ideas what could be causing this?

Try this
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Poor 5Ghz Performance on New 2013 Airport Extreme

I just replaced two of the 5th generations AP Extremes with the new 802.11ac 6th Gen Ap Extremes. My setup (that worked fine in 5th gen) is 2 Extremes one as main router and one in bridged mode. Both of them are hanging of gig ethernet backhaul and both advertise the same SSID on the same 2.4 and 5ghz channel on both. (there is one ssid for 2.4 and one for 5ghz). When I connect to the 5GHz SSID it works fine for about 3-5 mins then it gets almost unbearable slow. Switching back to 2.4ghz SSID makes it fast again (though not as fast as 5ghz normal of course). I have now seen this happen on a 11" and 13" air (not the new ones the last gen). I thought it was because I migrated from old configs so I redid the setup from scratch and have the same issue. Anyone else seen that?

Your original setup sounds a bit complicated.. obviously it worked but if you had asked me I would say it has some issues.
In the old setup were the computers connecting to 5ghz signal.. or 2.4ghz.
In your new setup.. if you just use 2.4ghz is it working ok?
Remember the AC Extreme has much better range.. but the computers do not.. they have exactly the same range as before. Even higher gain antenna at 5ghz might not actually give you better range. If you test the air in the same room as the AC.. does it still fade out?
With the way you have it running now do you have the two computers in very different areas of the house?
Beam forming.. hmmm.. two different computers in two different areas could get confused.
Also there is too much auto happening. Can you lock the wireless channel.. on 5ghz at least and stick with the lower ones.. around 36-40 if possible. Apple made it auto rotate channels on the router end and auto rotate bands on the client end.. that can cause issues.

Wrt600N poor 5Ghz performance

I have the WRT600N router and am using the dual band wireless feature. I have the 2.4G band setup for Wireless G to give internet access to my Tivos...
My laptops and pc's are on the 5Ghz band set for Wireless N only.
The 2.4G Band has excellent signal throughout the house, heck even outside in the street it has good reception... The 5Ghz band however has excellent signal next to the router, but leave that room and it drops to poor... My N devices are constantly dropping connection. I replaced a wrt300N with this router so that I could specifically have my tivos on their own band and not have to have mixed settings. However the wrt300n had excellent coverage for the N devices and the new router is located in the same place as the old router....
Here are my specific settings:
2.4Ghz Band
Network Mode: G Only
Radio Band: default - 20Mhz
Wide channel: default - auto
Standard channel: 9
SSID Broadcast: enabled
5Ghz Band
Network Mode: N Only
Radio Band: Wide - 40Mhz (I have tried AUTO as well with no improvements)
Wide Channel: 46 (I have tried other setting as well)
Standard Channel: 48 - 5.240Ghz (I have tride other setting as well)
Wireless security is WPA2 + AES on both bands
I was using mac filtering as well... I turned it off until I get this issue resolved, not that it was the problem, just didn't want to have to enter in mac each time I swapped out new/different nics to see if that was the issue
My 2G band devices all have G rated usb nics (tivo brand)
My 5G band devices have Dual band 5G Linksys usb or express card nics
Wired network, as usual is functioning perfectly
Please help...

well I'm not so sure there isn't something causing interference now.... I fiddled with the settings a bit to no avail....
I then changed the position of the router AND also changed the two outer anntenas to point straight up and the middle antenna faces the outer ones. The signal has improved everywhere except the bedroom. There I'm getting approx 35Mbit and everywhere else downstairs I get between 130 and 190... Upstairs its full 270 no matter where....
So it may be something in my master bedroom that's causing some interference I just need to find out what...
I will call this fixed and the fix was antenna position....
oh yeah and I set everything in the advanced settings to auto. Previously CTS was disabled and N Transimission was set to 270... So that may be it also.
Message Edited by dspent on 04-16-2008 10:59 PM

HT1515 I'm getting poor performance from my apple TV, will plugging in my airport express via ethernet to apple tv increase its performance (poor wi-fi signal)

I'm getting poor performance from my apple TV, will plugging in my airport express via ethernet to apple tv increase its performance (poor wi-fi signal)

Yes, though it is less ideal than what I suggested earlier. You would need to place your AirPort Express in a location approximately midway between your AirPort Extreme Base Station and the TV. Then, using AirPort Utility, configure it to "extend a wireless network".
It may help. Bear in mind the signal thus "extended" by the Express can only be as good as the signal it can receive from the Extreme. That is the reason for selecting its appoximate midway location.
Read about it here: http://support.apple.com/kb/HT4145
Scroll down to "Wirelessly Extended Network (802.11n)" for a picture.
This solution requires an all-Apple wireless network. No third party stuff.
You mentioned using Ethernet. That would be a better idea. Scroll down to "Roaming Network (Ethernet-connected Wi-Fi base stations)" for a picture. In your case, the longer the Ethernet cable - hence the closer you can move the Express to the TV - the better

Extremely poor Java performance

I've been experiencing particularly bad performance from Java applications lately, seemingly out of nowhere. I'm seeing a noticable lag when performing operations where there previously were none, and longer operations are taking painfully long now. This is in an application that is manipulating binary files with a Swing GUI.
I updated to the latest version of the JRE (1.5.0_07) and it didn't help. Are there any oddball things I should be looking for, or things to change that might improve my performance?

Perhaps you are dealing with larger and larger data files?
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The symptom you describe (of sudden slow down,
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One thing you might want to observe is looking
at the process size (Use the "top" command in UNIX,
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Another thing you might want to try is to run your program
with profiling option turned on, so that you can see
which method/class is taking most of the time.

Poor memory performance

Hia all you out there
So I bought few days back 857P Neo - mobo. All is okay, but the memory performance of this board is not as good as I expected it to be. I wanted to have the best performance! I've tested this board with SiSoftSandra 2004 and Pc-Mark2002 and they both give a poor result.
I had a ASUS 865PE board before this one and according to tests it performed better . Oh why oh why!
Well here are my specs:
P4 3.2 Ghz (800 mhz)
875P Neo (bios 2.9, newest chipset drivers)
2 x 512 Mb Twinmos 400 mhz ddr-ram
Fortron 350 W powersupply
2 x 120 Gb Maxtor SATA HDD's (no raid)
2 x CD-rom drives (DVD & CD-RW)
ATI Radeon 9800 XT Gfx-card
Audigy player sound card (newest drivers)
I have the memory chips in dimm 1 (Cha A) and dimm 3 (Cha B). So it is a dual channel set up. The sound card is in the 2nd lowest pci slot and other pci slots are free. Pat is on in bios and DOT is set to colonel now. I had it disabled too, but regardless the setting the memory performance was lower than with my ASUS 865PE board. This affects my game play too, not to mention 3dMark scores.
Any help I woul appreciate greatly!
Best wishes, Tatu

Tatu,
You have not informed us as to what your memory benchmark results are/were on either of your platforms.
There are a few generic things to do to get optimal performance from your memory susbsystem:
A) have enought juice - Note 350W PSU is likely to be streached check many postings in this forum on PSUs.
B) Dynamic OverClocking – Disabled
C) Performance Mode – Ultra Turbo
D) DRAM Frequency - Auto
E) Spread Spectrum - Disabled
F) DDR Clock(MHz) - G) Configure Timing by SPD – On (except when timing is too tight)
H) 1:1
From another thread note the following....
Quote
Yes this Depends Heavily on How Fast your Memory is Rated to Run, as Most PC-3200 Modules, with a P4 (C) 800MHZ Bus Speed CPU Usually Score Between 4,600MB/Sec and 5,200MB/Sec (Also Depending on the Speed of the CPU)..And Most PC-4000 Rated Modules can achieve between 5,200MB/Sec and 5,800MB/Sec, My ABIT i875 with PC-4000 XMS-PRO and a 3.2GHZ Extreme Edition P4 can Achieve 6,120MB/Sec with a PBS (Processor Bus Speed) of 225MHZ, And you will only Reach your Max Mem. Bandwith while Running at a 1:1 Ratio (Synchronous) with the Mem. and CPU..............Sean REILLY875

Poor Flash performance on G4 mac mini

Hi,
I've got a 1.25Ghz PPC G4 mini with 512mb running 10.4.11 that exhibits extremely poor Flash performance; jerky almost unwatchable video. I downgraded from Flash 10 to 9, and it only got slightly better, and most videos now require 10. I've heard the Flash drivers for Macs are awful; is this the problem?
Also, maybe possibly related, when I leave the computer on for awhile, the hard disk eventually, and magically, "fills up". After a restart, I have 1.55G of a 37.5G drive. When I leave it on for awhile, it'll get down to Zero KB, and become so slow that I have to restart it again, if it doesn't just crash outright? Is this a memory leak? Is the only way to cure it by wiping the HD and reinstalling the OS?

I think Boece has nailed it. Can you get more memory in your mini? I know it's a pain and the max quoted by Apple is only 1G, but I think a big part of your problem is just plain lack of memory. When the system does not have enough real memory to work with it will use virtual memory - use the hard drive as if it were memory. This really slows things down, especially when you have a hard drive that is way too full as yours is. You have very little ram to be running OS X and you've effectively blocked the system from the work around it wants to use to deal with this by having a hard drive so full. Add a resource hog like flash and the problem just gets worse. Every time I've added memory to a mac the page-outs have gone down and the system become more responsive. You have a lot of page outs. I've seen macs run all day and have zero - but that's with 4-6g ram. Still, the fewer the better. Here's a nice link to Apple's discussion of memory usage in OS X: http://support.apple.com/kb/HT1342?viewlocale=en_US
Also, flash will never run great on the graphics sub-system in that unit. I have a MDD G4 1.25 with a similar graphics unit and flash isn't great on that either. But for security reasons I would never run less than the latest version of flash - it is one of the main conduits of malware these days and although I've never heard of problems on the mac it's still not good to leave gaping security holes. Hope this helps.

Poor query performance when joining CONTAINS to another table

We just recently began evaluating Oracle Text for a search solution. We need to be able to search a table that can have over 20+ million rows. Each user may only have visibility to a tiny fraction of those rows. The goal is to have a single Oracle Text index that represents all of the searchable columns in the table (multi column datastore) and provide a score for each search result so that we can sort the search results in descending order by score. What we're seeing is that query performance from TOAD is extremely fast when we write a simple CONTAINS query against the Oracle Text indexed table. However, when we attempt to first reduce the rows the CONTAINS query needs to search by using a WITH we find that the query performance degrades significantly.
For example, we can find all the records a user has access to from our base table by the following query:
SELECT d.duns_loc
FROM duns d
JOIN primary_contact pc
ON d.duns_loc = pc.duns_loc
AND pc.emp_id = :employeeID;
This query can execute in <100 ms. In the working example, this query returns around 1200 rows of the primary key duns_loc.
Our search query looks like this:
SELECT score(1), d.*
FROM duns d
WHERE CONTAINS(TEXT_KEY, :search,1) > 0
ORDER BY score(1) DESC;
The :search value in this example will be 'highway'. The query can return 246k rows in around 2 seconds.
2 seconds is good, but we should be able to have a much faster response if the search query did not have to search the entire table, right? Since each user can only "view" records they are assigned to we reckon that if the search operation only had to scan a tiny tiny percent of the TEXT index we should see faster (and more relevant) results. If we now write the following query:
WITH subset
AS
(SELECT d.duns_loc
FROM duns d
JOIN primary_contact pc
ON d.duns_loc = pc.duns_loc
AND pc.emp_id = :employeeID
SELECT score(1), d.*
FROM duns d
JOIN subset s
ON d.duns_loc = s.duns_loc
WHERE CONTAINS(TEXT_KEY, :search,1) > 0
ORDER BY score(1) DESC;
For reasons we have not been able to identify this query actually takes longer to execute than the sum of the durations of the contributing parts. This query takes over 6 seconds to run. We nor our DBA can seem to figure out why this query performs worse than a wide open search. The wide open search is not ideal as the query would end up returning records to the user they don't have access to view.
Has anyone ever ran into something like this? Any suggestions on what to look at or where to go? If anyone would like more information to help in diagnosis than let me know and i'll be happy to produce it here.
Thanks!!

Sometimes it can be good to separate the tables into separate sub-query factoring (with) clauses or inline views in the from clause or an in clause as a where condition. Although there are some differences, using a sub-query factoring (with) clause is similar to using an inline view in the from clause. However, you should avoid duplication. You should not have the same table in two different places, as in your original query. You should have indexes on any columns that the tables are joined on, your statistics should be current, and your domain index should have regular synchronization, optimization, and periodically rebuild or drop and recreate to keep it performing with maximum efficiency. The following demonstration uses a composite domain index (cdi) with filter by, as suggested by Roger, then shows the explained plans for your original query, and various others. Your original query has nested loops. All of the others have the same plan without the nested loops. You could also add index hints.
SCOTT@orcl_11gR2> -- tables:
SCOTT@orcl_11gR2> CREATE TABLE duns
2    (duns_loc NUMBER,
3      text_key VARCHAR2 (30))
4 /
Table created.
SCOTT@orcl_11gR2> CREATE TABLE primary_contact
2    (duns_loc NUMBER,
3      emp_id       NUMBER)
4 /
Table created.
SCOTT@orcl_11gR2> -- data:
SCOTT@orcl_11gR2> INSERT INTO duns VALUES (1, 'highway')
2 /
1 row created.
SCOTT@orcl_11gR2> INSERT INTO primary_contact VALUES (1, 1)
2 /
1 row created.
SCOTT@orcl_11gR2> INSERT INTO duns
2 SELECT object_id, object_name
3 FROM   all_objects
4 WHERE object_id > 1
5 /
76027 rows created.
SCOTT@orcl_11gR2> INSERT INTO primary_contact
2 SELECT object_id, namespace
3 FROM   all_objects
4 WHERE object_id > 1
5 /
76027 rows created.
SCOTT@orcl_11gR2> -- indexes:
SCOTT@orcl_11gR2> CREATE INDEX duns_duns_loc_idx
2 ON duns (duns_loc)
3 /
Index created.
SCOTT@orcl_11gR2> CREATE INDEX primary_contact_duns_loc_idx
2 ON primary_contact (duns_loc)
3 /
Index created.
SCOTT@orcl_11gR2> -- composite domain index (cdi) with filter by clause
SCOTT@orcl_11gR2> -- as suggested by Roger:
SCOTT@orcl_11gR2> CREATE INDEX duns_text_key_idx
2 ON duns (text_key)
3 INDEXTYPE IS CTXSYS.CONTEXT
4 FILTER BY duns_loc
5 /
Index created.
SCOTT@orcl_11gR2> -- gather statistics:
SCOTT@orcl_11gR2> EXEC DBMS_STATS.GATHER_TABLE_STATS (USER, 'DUNS')
PL/SQL procedure successfully completed.
SCOTT@orcl_11gR2> EXEC DBMS_STATS.GATHER_TABLE_STATS (USER, 'PRIMARY_CONTACT')
PL/SQL procedure successfully completed.
SCOTT@orcl_11gR2> -- variables:
SCOTT@orcl_11gR2> VARIABLE employeeid NUMBER
SCOTT@orcl_11gR2> EXEC :employeeid := 1
PL/SQL procedure successfully completed.
SCOTT@orcl_11gR2> VARIABLE search VARCHAR2(100)
SCOTT@orcl_11gR2> EXEC :search := 'highway'
PL/SQL procedure successfully completed.
SCOTT@orcl_11gR2> -- original query:
SCOTT@orcl_11gR2> SET AUTOTRACE ON EXPLAIN
SCOTT@orcl_11gR2> WITH
2    subset AS
3       (SELECT d.duns_loc
4        FROM      duns d
5        JOIN      primary_contact pc
6        ON      d.duns_loc = pc.duns_loc
7        AND      pc.emp_id = :employeeID)
8 SELECT score(1), d.*
9 FROM   duns d
10 JOIN   subset s
11 ON     d.duns_loc = s.duns_loc
12 WHERE CONTAINS (TEXT_KEY, :search,1) > 0
13 ORDER BY score(1) DESC
14 /
SCORE(1)   DUNS_LOC TEXT_KEY
        18          1 highway
1 row selected.
Execution Plan
Plan hash value: 4228563783
| Id | Operation                      | Name              | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT               |                   |     2 |    84 |   121   (4)| 00:00:02 |
|   1 | SORT ORDER BY                 |                   |     2 |    84 |   121   (4)| 00:00:02 |
|* 2 |   HASH JOIN                    |                   |     2 |    84 |   120   (3)| 00:00:02 |
|   3 |    NESTED LOOPS                |                   |    38 | 1292 |    50   (2)| 00:00:01 |
|   4 |     TABLE ACCESS BY INDEX ROWID| DUNS              |    38 | 1102 |    11   (0)| 00:00:01 |
|* 5 |      DOMAIN INDEX              | DUNS_TEXT_KEY_IDX |       |       |     4   (0)| 00:00:01 |
|* 6 |     INDEX RANGE SCAN           | DUNS_DUNS_LOC_IDX |     1 |     5 |     1   (0)| 00:00:01 |
|* 7 |    TABLE ACCESS FULL           | PRIMARY_CONTACT   | 4224 | 33792 |    70   (3)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("D"."DUNS_LOC"="PC"."DUNS_LOC")
   5 - access("CTXSYS"."CONTAINS"("D"."TEXT_KEY",:SEARCH,1)>0)
   6 - access("D"."DUNS_LOC"="D"."DUNS_LOC")
   7 - filter("PC"."EMP_ID"=TO_NUMBER(:EMPLOYEEID))
SCOTT@orcl_11gR2> -- queries with better plans (no nested loops):
SCOTT@orcl_11gR2> -- subquery factoring (with) clauses:
SCOTT@orcl_11gR2> WITH
2    subset1 AS
3       (SELECT pc.duns_loc
4        FROM      primary_contact pc
5        WHERE pc.emp_id = :employeeID),
6    subset2 AS
7       (SELECT score(1), d.*
8        FROM      duns d
9        WHERE CONTAINS (TEXT_KEY, :search,1) > 0)
10 SELECT subset2.*
11 FROM   subset1, subset2
12 WHERE subset1.duns_loc = subset2.duns_loc
13 ORDER BY score(1) DESC
14 /
SCORE(1)   DUNS_LOC TEXT_KEY
        18          1 highway
1 row selected.
Execution Plan
Plan hash value: 153618227
| Id | Operation                     | Name              | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT              |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|   1 | SORT ORDER BY                |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|* 2 |   HASH JOIN                   |                   |    38 | 1406 |    82   (4)| 00:00:01 |
|   3 |    TABLE ACCESS BY INDEX ROWID| DUNS              |    38 | 1102 |    11   (0)| 00:00:01 |
|* 4 |     DOMAIN INDEX              | DUNS_TEXT_KEY_IDX |       |       |     4   (0)| 00:00:01 |
|* 5 |    TABLE ACCESS FULL          | PRIMARY_CONTACT   | 4224 | 33792 |    70   (3)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("PC"."DUNS_LOC"="D"."DUNS_LOC")
   4 - access("CTXSYS"."CONTAINS"("TEXT_KEY",:SEARCH,1)>0)
   5 - filter("PC"."EMP_ID"=TO_NUMBER(:EMPLOYEEID))
SCOTT@orcl_11gR2> -- inline views (sub-queries in the from clause):
SCOTT@orcl_11gR2> SELECT subset2.*
2 FROM   (SELECT pc.duns_loc
3           FROM   primary_contact pc
4           WHERE pc.emp_id = :employeeID) subset1,
5          (SELECT score(1), d.*
6           FROM   duns d
7           WHERE CONTAINS (TEXT_KEY, :search,1) > 0) subset2
8 WHERE subset1.duns_loc = subset2.duns_loc
9 ORDER BY score(1) DESC
10 /
SCORE(1)   DUNS_LOC TEXT_KEY
        18          1 highway
1 row selected.
Execution Plan
Plan hash value: 153618227
| Id | Operation                     | Name              | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT              |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|   1 | SORT ORDER BY                |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|* 2 |   HASH JOIN                   |                   |    38 | 1406 |    82   (4)| 00:00:01 |
|   3 |    TABLE ACCESS BY INDEX ROWID| DUNS              |    38 | 1102 |    11   (0)| 00:00:01 |
|* 4 |     DOMAIN INDEX              | DUNS_TEXT_KEY_IDX |       |       |     4   (0)| 00:00:01 |
|* 5 |    TABLE ACCESS FULL          | PRIMARY_CONTACT   | 4224 | 33792 |    70   (3)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("PC"."DUNS_LOC"="D"."DUNS_LOC")
   4 - access("CTXSYS"."CONTAINS"("TEXT_KEY",:SEARCH,1)>0)
   5 - filter("PC"."EMP_ID"=TO_NUMBER(:EMPLOYEEID))
SCOTT@orcl_11gR2> -- ansi join:
SCOTT@orcl_11gR2> SELECT SCORE(1), duns.*
2 FROM   duns
3 JOIN   primary_contact
4 ON     duns.duns_loc = primary_contact.duns_loc
5 WHERE CONTAINS (duns.text_key, :search, 1) > 0
6 AND    primary_contact.emp_id = :employeeid
7 ORDER BY SCORE(1) DESC
8 /
SCORE(1)   DUNS_LOC TEXT_KEY
        18          1 highway
1 row selected.
Execution Plan
Plan hash value: 153618227
| Id | Operation                     | Name              | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT              |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|   1 | SORT ORDER BY                |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|* 2 |   HASH JOIN                   |                   |    38 | 1406 |    82   (4)| 00:00:01 |
|   3 |    TABLE ACCESS BY INDEX ROWID| DUNS              |    38 | 1102 |    11   (0)| 00:00:01 |
|* 4 |     DOMAIN INDEX              | DUNS_TEXT_KEY_IDX |       |       |     4   (0)| 00:00:01 |
|* 5 |    TABLE ACCESS FULL          | PRIMARY_CONTACT   | 4224 | 33792 |    70   (3)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("DUNS"."DUNS_LOC"="PRIMARY_CONTACT"."DUNS_LOC")
   4 - access("CTXSYS"."CONTAINS"("DUNS"."TEXT_KEY",:SEARCH,1)>0)
   5 - filter("PRIMARY_CONTACT"."EMP_ID"=TO_NUMBER(:EMPLOYEEID))
SCOTT@orcl_11gR2> -- old join:
SCOTT@orcl_11gR2> SELECT SCORE(1), duns.*
2 FROM   duns, primary_contact
3 WHERE CONTAINS (duns.text_key, :search, 1) > 0
4 AND    duns.duns_loc = primary_contact.duns_loc
5 AND    primary_contact.emp_id = :employeeid
6 ORDER BY SCORE(1) DESC
7 /
SCORE(1)   DUNS_LOC TEXT_KEY
        18          1 highway
1 row selected.
Execution Plan
Plan hash value: 153618227
| Id | Operation                     | Name              | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT              |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|   1 | SORT ORDER BY                |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|* 2 |   HASH JOIN                   |                   |    38 | 1406 |    82   (4)| 00:00:01 |
|   3 |    TABLE ACCESS BY INDEX ROWID| DUNS              |    38 | 1102 |    11   (0)| 00:00:01 |
|* 4 |     DOMAIN INDEX              | DUNS_TEXT_KEY_IDX |       |       |     4   (0)| 00:00:01 |
|* 5 |    TABLE ACCESS FULL          | PRIMARY_CONTACT   | 4224 | 33792 |    70   (3)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("DUNS"."DUNS_LOC"="PRIMARY_CONTACT"."DUNS_LOC")
   4 - access("CTXSYS"."CONTAINS"("DUNS"."TEXT_KEY",:SEARCH,1)>0)
   5 - filter("PRIMARY_CONTACT"."EMP_ID"=TO_NUMBER(:EMPLOYEEID))
SCOTT@orcl_11gR2> -- in clause:
SCOTT@orcl_11gR2> SELECT SCORE(1), duns.*
2 FROM   duns
3 WHERE CONTAINS (duns.text_key, :search, 1) > 0
4 AND    duns.duns_loc IN
5          (SELECT primary_contact.duns_loc
6           FROM   primary_contact
7           WHERE primary_contact.emp_id = :employeeid)
8 ORDER BY SCORE(1) DESC
9 /
SCORE(1)   DUNS_LOC TEXT_KEY
        18          1 highway
1 row selected.
Execution Plan
Plan hash value: 3825821668
| Id | Operation                     | Name              | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT              |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|   1 | SORT ORDER BY                |                   |    38 | 1406 |    83   (5)| 00:00:01 |
|* 2 |   HASH JOIN SEMI              |                   |    38 | 1406 |    82   (4)| 00:00:01 |
|   3 |    TABLE ACCESS BY INDEX ROWID| DUNS              |    38 | 1102 |    11   (0)| 00:00:01 |
|* 4 |     DOMAIN INDEX              | DUNS_TEXT_KEY_IDX |       |       |     4   (0)| 00:00:01 |
|* 5 |    TABLE ACCESS FULL          | PRIMARY_CONTACT   | 4224 | 33792 |    70   (3)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("DUNS"."DUNS_LOC"="PRIMARY_CONTACT"."DUNS_LOC")
   4 - access("CTXSYS"."CONTAINS"("DUNS"."TEXT_KEY",:SEARCH,1)>0)
   5 - filter("PRIMARY_CONTACT"."EMP_ID"=TO_NUMBER(:EMPLOYEEID))
SCOTT@orcl_11gR2>

Quicktime 7.1.2 causing poor Rosetta performance

Has anyone else noticed considerably poor performance from any PowerPC apps (such as major lag typing in Microsoft Word) and general system slugglishness after installing the Quick 7.1.2 update?
I have.

Not here. Although I am using Office v.X rather than 2004 and neither have I install Mac OS X 10.4.7.

Very poor video streaming from youtube

I cannot watch a single video from youtube or any other site. I have OS v6.0.0.522. Is there anything i can do?? It will play a video for a few seconds then just starts to buffer. I have a BB 3G 9300 with Sprint

Hello mikeswitzer. Welcome to the Apple Discussions!
As you have already figured out poor signal strength equals poor bandwidth performance. This, of course, will be noticeable for both audio and video streaming.
I suggest downloading a copy of iStumbler. Use iStumbler's Inspector feature (select Edit > Inspector from iStumbler's menu) to determine the Signal-to-Noise Ratio (SNR) at different points around your house, by performing a simple RF site survey. Within the Inspector, note the values for "signal" & "noise" at these locations. Start with your MacBook near the Time Capsule (TC), note the readings, and then, go to the location where you currently have the Mac Mini.
SNR is the signal level (in dBm) minus the noise level (in dBm). For example, a signal level of -53dBm measured near an access point and typical noise level of -90dBm yields a SNR of 37dB, a healthy value for wireless LANs.
The SNR, as measured from the MacBook, decreases as the range to the base station increases because of applicable free space loss. Also an increase in RF interference from microwave ovens and cordless phones, which increases the noise level, also decreases SNR.
SNR Guideline
o 40dB+ SNR = Excellent signal
o 25dB to 40dB SNR = Very good signal
o 15dB to 25dB SNR = Low signal
o 10dB to 15dB SNR = Very low signal
o 5dB to 10dB SNR = No signal
If the SNR is 20dB+ at the Mac Mini, then you should be getting reasonable performance from your TC. If less, either try to locate the source of the Wi-Fi interference or try relocating either the TC or the Mac Mini until they are within a 20dB SNR range.
Another option is to utilize a transceiver on the Mac Mini to try to increase the Mini's built-in AirPort antenna ability to pick up the signal from the TC. One vendor that provides these is QuickerTek.

IPhone 4S Poor Battery Performance SOLVED!!

iPhone 4S Poor Battery Performance SOLVED!!
I found the issue with the iPhone 4S battery performance.
I bought 2 iPhone 4S models on the first day. One for my wife and one for me. The strange thing was that mine would kill the battery in 4-6 hours and ran VERY WARM to the touch. My wife's phone worked great. It was cold to the touch. She would forget to charge it at night... and the battery performance was great... even better than our prior 3GS models.
What was the difference? I have my phone connected to Exchange for my corporate email. But exchange is not exactly the problem. The issue is in Notification Center. For some reason, I had hundreds of calendar reminders that kept refreshing on notification center. Furthermore, the reminders would flicker between the time remaining and the start time for the event at such a fast rate that it could not be read... (clearly a bug)
What is the solution? Go to Settings>Notifications>Calendar and disable Notification Center. You can still have the "alert style" set to Banners, or Alerts and you will still receive notices about your events, but it will not BUILD a summary in the Notification Center drop down screen. This is where the BUG exists. [Oddly, this does not affect my iPad 2, but is an issue for iOS 5 on the iPhone (different builds, maybe?)]
So, it appears that Notification Center has an endless loop in collecting the calendar events from Exchange and this is burning up our 4S batteries. Once you stop the madness from Notification Center, your iPhone 4S will perform as advertised.
Enjoy!
Tim

TimothyW wrote:
iPhone 4S Poor Battery Performance SOLVED!!
I found the issue with the iPhone 4S battery performance.
I bought 2 iPhone 4S models on the first day. One for my wife and one for me. The strange thing was that mine would kill the battery in 4-6 hours and ran VERY WARM to the touch. My wife's phone worked great. It was cold to the touch. She would forget to charge it at night... and the battery performance was great... even better than our prior 3GS models.
What was the difference? I have my phone connected to Exchange for my corporate email. But exchange is not exactly the problem. The issue is in Notification Center. For some reason, I had hundreds of calendar reminders that kept refreshing on notification center. Furthermore, the reminders would flicker between the time remaining and the start time for the event at such a fast rate that it could not be read... (clearly a bug)
What is the solution? Go to Settings>Notifications>Calendar and disable Notification Center. You can still have the "alert style" set to Banners, or Alerts and you will still receive notices about your events, but it will not BUILD a summary in the Notification Center drop down screen. This is where the BUG exists. [Oddly, this does not affect my iPad 2, but is an issue for iOS 5 on the iPhone (different builds, maybe?)]
So, it appears that Notification Center has an endless loop in collecting the calendar events from Exchange and this is burning up our 4S batteries. Once you stop the madness from Notification Center, your iPhone 4S will perform as advertised.
Enjoy!
Tim
Check this out. They are stumpped:
http://www.guardian.co.uk/technology/2011/oct/28/iphone-4s-battery-apple-enginee rs

Satellite Pro S500-11C - poor audio performance

Hi Folks,
I have a Satellite Pro S500-11C which suffers from the poor audio performance mentioned in reviews of the S500-11C (yeah I should have *+listened+* to the reviews and excuse the pun).
This is making it very difficult to use this laptop for audio applications such as music, VOIP and Skype without having to carry about a heaeset of some type.
Has anyone else eperianced this problem and had a solution. Any help from Toshiba??
Best Regards,
Andrew

Sorry but what kind of problem do you mean exactly? Is the sound not loud enough or what?
I mean this notebook has standard stereo speakers and not high end harman/kardon speakers inside.
I have Satellite L300 in front of me with same stereo speakers. Sound is OK but not so good as on other laptops with h/K speakers.
By the way: what kind of help do you expect? Some new driver that makes speakers louder maybe?

Poor graphics performance over time

I've seen an issue ever since upgrading to Lion where after some period of time (haven't nailed down how long, but measured in hours) 3D game performance suffers greatly (60+fps down to 12fps). Rebooting fixes the issue until it sits long enough.
The drop doesn't seem to happen mid-game... only after leaving for a while and returning to the computer. I've run all the usual diagnostics. The iMac does not "sleep" during that time (i have it set to always on). During the performance slow down, all system stats look normal: no spikes in CPU usage, memory usage, etc. All internal temperatures report out normal as well. No other hardware or software changes other than the Lion upgrade. When the FPS slow down is occuring, all system animations also suffer (sliding in Dashboard, Dock magnification, etc). Quit the game and the system animations come back to full speed.
The game I play most often's technical support is worthless (i'm looking at you Blizzard), so I'm hoping someone else has run in to this issue, or that an actual support person can help without telling me to run a permissions check.
Thanks!

FromPC2Mac wrote:
I just bought this MacBook Pro the 26th and it came with Leopard. After installing XP on the system, I can't get over the fact of the poor graphics performance. Even moving windows would result in a bad frame rate. Obviously, this is caused by a lack of "good" drivers for the GeForce 8600M GT. The drivers from Nvidia aren't working, so either this is the best of Windows I'm getting on this system or there's some sort of driver that I haven't heard of. Does anyone have any insight on this?
First off... Congrats on buying a MBP!
You might be interested in this thread:
http://discussions.apple.com/thread.jspa?threadID=1200236&tstart=0
Hopefully this will help.
Good luck.

Poor 5GHz Performance from Extreme ?

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