performance y40 Lenovo problem
I bought lenovo y40 ago 30/11/2014... I am not happy with that because his slow running on day 1... I tried many way to solve it but it doesn, t work I need few Suggetions as soon as possible, that I have to solve this problem.
You can try to reset the laptop which will erase all of your personal files (make a backup) and restore the system to its original configuration.
Shut down the laptop computer
Press the NOVO button next to the power button
Follow the instructions to reset to the factory settings.
Once the process is complete, recheck the system. If it is still slow, then call Lenovo in your country and request a RMA number, maybe your drive HARD or SSD or RAM is not good and is a failure.
Send it for repair.
Tags: Lenovo Notebooks
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Hello guys, Im using Lenovo Y510P with the following specifications:
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I got this laptop from my brother, and I use it to play in Counter Strike Global Offensive (CSGO) game. I saw this laptop do about 250fps in most of the maps from CS GO, but still I get only 124fps in the cards with the settings lowest. Anyone of you guys you will suggest tips to solve this problem?
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EDIT: Installation of the OS on the 24 GB SSD does affect performance of game somehow? My SSD has been damaged and there are currently no SSD inside. It is only the HARD drive.
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I recently got the Lenovo Y50. It has a 960 M GTX and an Intel Core I7 processor. When you try to play one of my favorite games (League of Legends), I realized that even on the lower settings, the Y50 runs only about 45 fps games. The specifications of this laptop should easlisy be able to run the game a much higher FPS, even on the highest graphics settings... Does anyone know a soultion for this? Yes I played with my charging cable in and I made sure that the game is running with the Nvidia graphics card... Help?
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Performance of Bluetooth problem
I, two headphones listening separate bluetooth (Jaybird X2s and Airfix Matrix 2) this pair perfectly and work fine with my iPhone 6.
The problem is that when I connect it to my Mac, performance system - audio and video, jump tanks lag mouse, slow individual tasks, etc.
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I see no unusual chatter in the Console, only messages I expect:
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I contacted the support from Apple via Twitter and they recommended the usual Voodoo PRAM reset, but it was not effective.
Any ideas?
Now, I'm sure that this is caused by low battery on bluetooth devices to 99%.
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Well well... :-/
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Hey,.
My screen cracked a few weeks ago and I decided to order this form from amazon:
http://www.Amazon.com/Lenovo-ThinkPad-laptop-substitute-replacement/DP/B004VUO2N6/ref=sr_1_1?ie=UTF8...I followed a video online with instructions on how to replace the screen. Im sure that I installed it right but when I turned the laptop on only the backlight turned on and nothing else. Ive heard that it may be a problem with the display cable, but I'm not too sure. Any help would be how to fix this would be appreciated.
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Hello:
I bought my Y40 in September of last year, and he has been excellent work up until the last two weeks. I'm no longer the battery warning when it reaches 10%, instead, it is 100% and when I plugged it it shows that it is 0%. Today, I checked the energy Manager, and he says that the battery is low and needs to be replaced. How is the battery is already breaks down when the laptop is not even a year? is that what I can do about it?
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Lenovo has launched a CUTTING-EDGE Service to help customers get the battery replacement under warranty, or if more warranty, find a spare from suppliers approved by Lenovo battery. The Service TIP can be found here: https://support.lenovo.com/us/en/solutions/sf16-I0023
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Y40 LG L13L4P01 7.4V48Wh IBE 4cell (Y40-70/Y40-80) 121500249 replace the 121500251 part
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To determine what battery supplied with your computer laptop Y40, instructions to remove the lower cover can be found in the manual of Maintenance of equipment pdf here. An alternative to opening your system (which do not cancel warranty) is to find batteries using the product/model number located on the bottom cover.
Thank you
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This new form is only dedicated to all the problems and fixes for Lenovo vibe combined k5 (snapdtagon415). Please report all problems in this post. Also give the problem of bugs and suggestions for future updates.
(1) uninstall all preinstalled applications and disable applications that can not be installed.
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But from my point of view, the performance is slow on my previous i3. Multitasking is slow, opening firefox has also a wrong speed.
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Control rear service coverage and see you slot 2 or 1 for ram.
http://www.crucial.com/USA/en/compatible-upgrade-for/Lenovo/Lenovo-G40-45
APU channel on dual ram graphics card run faster discrete graphics card(gddr3 slow gddr5 faster) - graphic design double disabling.
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Hello Yaqub K,.
I was already running on Firefox and connected to my wireless router.
I tried to see if the problem has continued on Internet Explorer, which he did when viewing media.
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After reading "HOW TO: post a request for tuning SQL - model showing statement" I gathered:
I have included some general information at the bottom of the post
The following SQL statement has been identified as a bad performance. It takes ~ 160 seconds to run, but similar (indicated below first statement) SQL statements run in ~ 1 second.
SQL taking 160 seconds:
SQL in ~ 1 second or lessSELECT a.* FROM table_a a INNER JOIN table_a_b ab ON a.id = ab.media_fk WHERE ab.channel_fk IN (7, 1);
Or:... ab.channel_fk IN (7);
The purpose of the SQL is to return lines from table_a associated table_b (not in SQL) through the junction table table_a_b.... ab.channel_fk IN (6, 9, 170, 89);
The version of the database is 10.2.0.4.0
These are the parameters relevant for the optimizer:
Here is the output of the EXPLAIN PLAN of:show parameter optimizer; NAME TYPE VALUE -------------------------------------------------- ----------- ----------------------------------------- optimizer_dynamic_sampling integer 2 optimizer_features_enable string 10.2.0.4 optimizer_index_caching integer 0 optimizer_index_cost_adj integer 100 optimizer_mode string ALL_ROWS optimizer_secure_view_merging boolean TRUE show parameter db_file_multi; NAME TYPE VALUE -------------------------------------------------- ----------- ----------------------------------------- db_file_multiblock_read_count integer 16 show parameter db_block_size; NAME TYPE VALUE -------------------------------------------------- ----------- ----------------------------------------- db_file_multiblock_read_count integer 16 select sname, pname, pval1, pval2 from sys.aux_stats$; SNAME PNAME PVAL1 PVAL2 ------------------------------ ------------------------------ ---------------------- ------------------- SYSSTATS_INFO STATUS COMPLETED SYSSTATS_INFO DSTART 07-18-2006 23:19 SYSSTATS_INFO DSTOP 07-25-2006 23:19 SYSSTATS_INFO FLAGS 0 SYSSTATS_MAIN SREADTIM 5.918 SYSSTATS_MAIN MREADTIM 7.889 SYSSTATS_MAIN CPUSPEED 1383 SYSSTATS_MAIN MBRC 8 SYSSTATS_MAIN MAXTHR 1457152 SYSSTATS_MAIN SLAVETHR -1
For reference, the EXPLAIN PLAN when usingPLAN_TABLE_OUTPUT Plan hash value: 3781163428 ---------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time | ---------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1352K| 771M| | 60042 (3)| 00:05:56 | |* 1 | HASH JOIN | | 1352K| 771M| 27M| 60042 (3)| 00:05:56 | |* 2 | INDEX FAST FULL SCAN| SYS_IOT_TOP_316310 | 1352K| 11M| | 1816 (4)| 00:00:11 | | 3 | TABLE ACCESS FULL | TABLE_A | 2190K| 1230M| | 32357 (4)| 00:03:12 | ---------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 1 - access(""AB"".""MEDIA_FK""=""A"".""ID"") 2 - filter(""AB"".""CHANNEL_FK""=1 OR ""AB"".""CHANNEL_FK""=7) Note ----- - 'PLAN_TABLE' is old version
that runs in ~ 1 second is:... ab.channel_fk IN (6, 9, 170, 89);
Here is the output of SQL * Plus AUTOTRACE, including CALENDAR information:PLAN_TABLE_OUTPUT Plan hash value: 794334170 ---------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time | ---------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 143K| 81M| | 58982 (3)| 00:05:50 | |* 1 | HASH JOIN | | 143K| 81M| 2952K| 58982 (3)| 00:05:50 | | 2 | INLIST ITERATOR | | | | | | | |* 3 | INDEX RANGE SCAN| C_M_INDEX | 143K| 1262K| | 1264 (1)| 00:00:08 | | 4 | TABLE ACCESS FULL| TABLE_A | 2190K| 1230M| | 32357 (4)| 00:03:12 | ---------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 1 - access(""AB"".""MEDIA_FK""=""A"".""ID"") 3 - access(""AB"".""CHANNEL_FK""=6 OR ""AB"".""CHANNEL_FK""=9 OR ""AB"".""CHANNEL_FK""=89 OR ""AB"".""CHANNEL_FK""=170) Note ----- - 'PLAN_TABLE' is old version
The TKPROF output for that statement looks like the following:SQL> set autotrace traceonly arraysize 100; SQL> SELECT 2 a.* 3 FROM 4 table_a a 5 INNER JOIN table_a_b ab ON a.id = ab.media_fk 6 WHERE 7 ab.channel_fk IN (7, 1); 1336148 rows selected. Execution Plan ---------------------------------------------------------- Plan hash value: 3781163428 ---------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time | ---------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1352K| 771M| | 60042 (3)| 00:05:56 | |* 1 | HASH JOIN | | 1352K| 771M| 27M| 60042 (3)| 00:05:56 | |* 2 | INDEX FAST FULL SCAN| SYS_IOT_TOP_316310 | 1352K| 11M| | 1816 (4)| 00:00:11 | | 3 | TABLE ACCESS FULL | TABLE_A | 2190K| 1230M| | 32357 (4)| 00:03:12 | ---------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 1 - access("AB"."MEDIA_FK"="A"."ID") 2 - filter("AB"."CHANNEL_FK"=1 OR "AB"."CHANNEL_FK"=7) Note ----- - 'PLAN_TABLE' is old version Statistics ---------------------------------------------------------- 10586 recursive calls 0 db block gets 200457 consistent gets 408343 physical reads 0 redo size 498740848 bytes sent via SQL*Net to client 147371 bytes received via SQL*Net from client 13363 SQL*Net roundtrips to/from client 49 sorts (memory) 0 sorts (disk) 1336148 rows processed
DBMS_XPLAN. Output DISPLAY_CURSOR:TKPROF: Release 10.2.0.4.0 - Production on Mon Oct 1 12:23:21 2012 Copyright (c) 1982, 2007, Oracle. All rights reserved. Trace file: ..._ora_4896.trc Sort options: default ******************************************************************************** count = number of times OCI procedure was executed cpu = cpu time in seconds executing elapsed = elapsed time in seconds executing disk = number of physical reads of buffers from disk query = number of buffers gotten for consistent read current = number of buffers gotten in current mode (usually for update) rows = number of rows processed by the fetch or execute call ******************************************************************************** ALTER SYSTEM SET TIMED_STATISTICS = TRUE call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.00 0.00 0 0 0 0 Execute 1 0.00 0.03 0 0 0 0 Fetch 0 0.00 0.00 0 0 0 0 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 2 0.00 0.03 0 0 0 0 Misses in library cache during parse: 0 Parsing user id: 21 ******************************************************************************** SELECT a.* FROM table_a a INNER JOIN table_a_b ab ON a.id = ab.media_fk WHERE ab.channel_fk IN (7, 1) call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.01 0.00 0 0 0 0 Execute 1 0.00 0.00 0 0 0 0 Fetch 2 27.23 163.57 179906 198394 0 16 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 4 27.25 163.58 179906 198394 0 16 Misses in library cache during parse: 1 Optimizer mode: ALL_ROWS Parsing user id: 21 ******************************************************************************** OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 2 0.01 0.00 0 0 0 0 Execute 2 0.00 0.03 0 0 0 0 Fetch 2 27.23 163.57 179906 198394 0 16 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 6 27.25 163.62 179906 198394 0 16 Misses in library cache during parse: 1 OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 0 0.00 0.00 0 0 0 0 Execute 0 0.00 0.00 0 0 0 0 Fetch 0 0.00 0.00 0 0 0 0 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 0 0.00 0.00 0 0 0 0 Misses in library cache during parse: 0 2 user SQL statements in session. 0 internal SQL statements in session. 2 SQL statements in session. ******************************************************************************** Trace file: ..._ora_4896.trc Trace file compatibility: 10.01.00 Sort options: default 1 session in tracefile. 2 user SQL statements in trace file. 0 internal SQL statements in trace file. 2 SQL statements in trace file. 2 unique SQL statements in trace file. 46 lines in trace file. 187 elapsed seconds in trace file.
Thank you for reading I'm waiting for suggestions to improve the performance of this statement.select * from table(dbms_xplan.display_cursor('474frsqbc1n4d', null, 'ALLSTATS LAST')); PLAN_TABLE_OUTPUT SQL_ID 474frsqbc1n4d, child number 0 ------------------------------------- SELECT /*+ gather_plan_statistics */ c.* FROM table_a c INNER JOIN table_a_b ab ON c.id = ab.media_fk WHERE ab.channel_fk IN (7, 1) Plan hash value: 3781163428 --------------------------------------------------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | Reads | Writes | OMem | 1Mem | Used-Mem | --------------------------------------------------------------------------------------------------------------------------------------------------- |* 1 | HASH JOIN | | 1 | 1352K| 1050 |00:00:40.93 | 198K| 182K| 209K| 29M| 5266K| 3320K (1)| |* 2 | INDEX FAST FULL SCAN| SYS_IOT_TOP_316310 | 1 | 1352K| 1336K|00:00:01.34 | 10874 | 0 | 0 | | | | | 3 | TABLE ACCESS FULL | TABLE_A | 1 | 2190K| 2267K|00:02:45.56 | 187K| 182K| 0 | | | | --------------------------------------------------------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 1 - access(""AB"".""MEDIA_FK""=""C"".""ID"") 2 - filter((""AB"".""CHANNEL_FK""=1 OR ""AB"".""CHANNEL_FK""=7))
-----
H3. Backgroud
There are many years my company made decided to maintain many-to-many relationships in our database using pipe delimited fields. An example of field value:
Each delimited value refers to a unique "short" code TABLE_B (there is also a real digital foreign key to TABLE_B, which is what I use in the junction table). We are regularly using these columns with the next SQL style:'|ABC|XYZ|VTR|DVD|'
Appropriate indexes have been created over the years to make this process as soon a possible.... WHERE INSTR(pipedcolumn, '|ABC|') > 0 OR INSTR(pipedcolumn, '|XYZ|' > 0 ...
We now have an opportunity to correct some of these errors of design and implementation of junction tables to replace the current field. Before that, we have decided to take a copy of a database to a client with the largest set of records and test. I created a new junction table:
And the analysis on a pipe delimited field, populated by this new table.TABLE_A_B DDL: CREATE TABLE TABLE_A_B ( media_fk NUMBER, channel_fk NUMBER, PRIMARY KEY (media_fk, channel_fk), FOREIGN KEY (media_fk) REFERENCES TABLE_A (ID), FOREIGN KEY (channel_fk) REFERENCES TABLE_B (ID) ) ORGANIZATION INDEX COMPRESS; CREATE INDEX C_M_INDEX ON TABLE_A_B (channel_fk, media_fk) COMPRESS;
I then compared the performance of the following SQL:
When x, y, n are values that occur less frequently in the TABLE_A_B.CHANNEL_FK performance are comparable. However once the frequency of x, y, n increases, performance suffers. Here is a summary of the data CHANNEL_FK in TABLE_A_B:SELECT a.* FROM table_a a INNER JOIN table_a_b ab ON a.id = ab.media_fk WHERE ab.channel_fk IN (x, y, n); -- Can be Many Minutes --vs. SELECT a.* FROM table_a a WHERE INSTR(OWNERS,'|x|') >0 OR INSTR(OWNERS,'|y|') >0 OR INSTR(OWNERS,'|n|') >0; -- About 1 second seemingly regardless
I noticed that whenever I use any combination of values that occur over approximately 800 000 times (i.e. IN (7, 1) = 780741 + 555407 = 1336148) then I get performance problems.--SQL For Summary Data SELECT channel_fk, count(channel_fk) FROM table_a_b GROUP BY channel_fk ORDER BY COUNT(channel_fk) DESC; CHANNEL_FK COUNT(CHANNEL_FK) ---------------------- ---------------------- 7 780741 1 555407 2 422493 3 189493 169 144663 9 79457 6 53051 171 28401 170 19857 49 12603 ...
I find it very difficult to accept that the old pipe delimited fields are a better solution (without taking into account any other than this search criterion!).
Thank you for reading this far. I really look forward to suggestions on how to improve the performance of this statement.
Published by: user1950227 on October 1, 2012 12:06
Table of link renamed in DDL.davebcast wrote:
The following SQL statement has been identified as a bad performance. It takes ~ 160 seconds to run, but similar (indicated below first statement) SQL statements run in ~ 1 second.
Keep in mind that the enforcement timeframe has elapsed is a poor metric to use for benchmarking of SQL. The reason is that the same workload does not mean that the same elapsed execution time.
The workload for example shows a block of 1000 readings. There will be a difference marked by this workload reading data of the slow physical disks, or making this workload by reading data from memory in memory cache. And if it happens to be in memory or on disk is a kind of "random" thing (depends on many environment and factors of execution).
Thus, rather than measure the elapsed time and use it to compare, rather compare actual workloads. A workload of 500 block reading is faster and better than a block of 1000 DSL - despite the fact that a point of elapsed time can show the 500 read being slow (e/s physical) block a block of 1000 to read (e/s logic).
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Thank youWell, if you are root on the server, you can connect to the database as SYSDBA using operating system authentication.
Using operating system tools could be potentially useful, but usually in addition to the information in the database, not instead of it. You can see at the level of the operating system, for example, that the machine is constantly using 95% of the available CPU for long periods of time at night so we can conclude that the current processes of charge every night are generally CPU a bottleneck. Short throw material the problem (which may or may not make things better), however, there is no way to know that the problem is that there are a few poor query plans that are causing excessive CPU consumption and no way to fix the problem.
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Thank you.What language do you use? Maybe a few problems of libraries?
Nicolas.
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Can block the macfee map network or something?
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