Impact of the RAM speeds on site/server

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• Impact of the Hub of gateway on server cluster cache performance

  Hello

  We observe a performance problem when we implement gateway Hub for the async-write object delayed on the cluster of cache servers.

  The test which takes about 7-8 seconds with established central gateway in place, takes 600-700 milliseconds after removing the hub of the cluster.

  Here is the description of our test environment.

  GemFire cluster composed of two cache servers, running on the VMS distinct and is managed by a localization process. Hub gateway is implemented to send events to the asynchronous MySQL database.

  GemFire customers, initialized in a web application, connect to the same cluster by using the Locator.

  These clients, two in number, are configured to run at the same time and put data in the same region. These customers operate continuously for 10 minutes and call several threads that put data/change data in the region at the same time.

  What we are seeing, it's when the Hub is implemented in the cluster, one of the cache server in cluster is not functioning effectively and permanently record a warning like ' DistributedCacheOperation$ CacheOperationReplyProcessor: waiting for 1 < another server cache > responses whose list of members is...' and

  'Wait response completed'. This particular server is one that have secondary hub. This cache server CPU utilization is 5-10%, while the use of other cache server goes from 80 to 90%.

  After removing the Hub of cluster, both servers to cache in equal parts work and both use about 80-90% of CPU.

  Please suggest if there is something wrong in the implementation.

  If this is the general behavior of the Hub of the bridge then there no alternative for backing up the data in the database without affecting performance?

  Note: schedules above represent the results of web applications of Jmeter load tests. Each user of the application connects to the server cache cluster and puts data in the region. Here are the average time taken by a user when 500 concurrent users are using the application.

  Thank you

  Mahesh

  -------------------------------------------------------------------------------------------------------

  Deployments: Gemfire662, Java6 - 64 bit, Windows Server 2008 64 bit

  Hub The two parameters (cache.xml) servers cache:

  < id hub carrier ="TimeBookingsDBWriter" port ="-1" ".

  startup strategy ="primary">

  < gateway id ="TimeBookingsDBWriter">

  <>Gateway-listener

  listeners of < class name >-. TB_GatewayListener_Hib < / class name >

  < / gateway-listener >

  < gateway-tail-lot size ='100' lot-time-interval ="1000" batch-conflation ="true" / >

  < / gateway >

  < / hub carrier >

  < region name ="ProjletTask">

  < scope region-attributes ="distributed-ack"

  data-policy ="duplicate"

  Enable-subscription-conflation ='true' hub - id ="TimeBookingsDBWriter" enable-gateway ="true">

  < / region-attributes >

  < name of index ="projletIDIndex">

  < functional-clause from =' / ProjletTask pt " expression ="pt.projletID" / >"

  < / index >

  < name of index ="quickTaskIDIndex">

  < functional-clause from =' / ProjletTask pt " expression ="pt.quickTaskID" / >"

  < / index >

  < / region >

  Settings on the client side (client - cache.xml):

  < =' make-pool ' min-connections pool name ="250" max-connections ='500' read-timeout ='600000' socket-buffer-size ="64000">

  < locatorr host ="107.21.164.4" port ="10335"/ >

  < / pool >

  < name region ="ProjletTask" refid ="PROXY">

  < / region >

  Data Insert method:

  Region.putAll)

  Hello Manu,

  I have done some tests and I think that what you see is a 'normal' behavior - at least it's explainable.

  When you create a pool, GemFire will establish a first set of connections (connections min). When your application performs an operation, it will capture a connection, make the op and then releases the connection to the pool. The conections are maintained as a battery and connections are made and returned to the top of the stack.

  Without a gateway, each server load is equal - doing a put (or putAll) requires the same amount of treatment regardless of what server you touch. Thus, the connections are used at a constant speed of the pool which unifies the load.

  However, with a door from the outset, the server load (what to do to treat a put) becomes disproportionate. In fact, the secondary server still has work to do that no matter what puts also result in a message sent to the main access door to treat this event. So, put everything on a secondary antibody, will be increasingly long. On the client, it also means that secondary connections are in use longer, which means that there will be more connections, available in the pool, to the main server (because it is able to process puts connections faster and so return to the pool more quickly). Any operation which the customer must do is more likely to have a connection to the primary, and therefore the disproportionate burden that you see.

  One thing you should is implemented to be thread-local-connections = true in the definition of your pool. That should help the connections, but I'm not sure that this will be a solution long term for you.

  Another thing you might also consider using GemFire 7.0 which has a mechanism of much better writeback. By using it, you should definitely be able to get a distribution of the even load that you are able to configure the parallel lines within each server.

  -Jens

• the maximum speed for my pavilion a6567c RAM

  You want to speed up my pavilion a6567c desktop, currently running vista 64-bit, have 4 GB of pc2-6400 ram, want to upgrade to 8 GB, the max for the model, but I would like to speed up to pc2-8500. This will work with the ipibl-lb, card mother benicia. said HP 6400 site is high, some items suggest 8500 will work. Thank you

  Hello

  Increase RAM speed will give you nothing IF the machine does not support a lower speed. Yes, the pc2-8500 RAM may work but as above, unless they are cheaper or no point to buy.

  Kind regards.

• Receive the "403 Forbidden" error code on a Web site, I've been accessing years. It is written "forbidden you don't have permission to access the/_cqr/login on that server." I can access this site (AOL) on other browsers. Help!

  Receive the "403 Forbidden" error code on a Web site, I've been accessing years. It is written "forbidden you don't have permission to access the/_cqr/login on that server." I can access this site (AOL) on other browsers.

  I emptied my cache.  I rebooted Firefox.  This is my email website - never had a problem before.  I am able to access it on Safari.  I even tried the simple address (rather then my bookmarked login address) - still got the same error message!
  

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• Satellite A10 S203: Question about the speed of the RAM

  I want to upgrade the RAM in my A10 S203. I know that there are 256 MB DDR RAM in my pc, and I want to add a little. Nobody knows what the speed of the RAM, to know what kind I need to order. I know that the format of the upgrade of RAM must be 128 or 256 MB or 512 MB, I only need to know the speed of this DDR RAM. anyine can help me?

  Hello

  Well, as far as I know the unit has 2 available slots and you can upgrade memory maximum. 1024MB.
  In addition, the device uses the modules of PC2100 DDR - Ram:
  PC2100 128 MB (PA3126U - 1 M 12)
  PC2100 256 MB (PA3127U - 1 M 25)
  PC2100 512 MB (PA3164U - 1 M 51)

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• How to change the speed of the RAM on my HP Envy m6 - 1158ca?

  Hello

  I have a laptop of m6 - 1158ca HP Envy (Intel i7 3632QM @2. 2 GHz) running Windows 8 Pro 64 bit with 8 GB of RAM. Supposed to be 1600 MHz RAM speed, but I don't see that 800 MHz through a third-party tool (CPU - Z).

  Are there settings in the BIOS I have change to change this?

  Thank you
  Véronique

  N ° there is no option in BIOS OEM that allow you to change the speed of add-on memory or speed of the bus.

  It is an option that is present in passionate desktop motherboards.

  Computer Systemboards laptop OEM and microcomputers have less optional parameters.

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• Satellite L300 PSLB8E - how to increase the ram clock speed

  I have a laptop which is equipped with 2 slots for ram PC2-6400
  1 - Samsung module M4 70T5663QZ3-CF7 [800 MHz] 2GB
  2 - Samsung module M4 70T2864QZ3-CF7 [800 MHz] 1 GB
  GPU: Intel GM45
  Processor: Intel Core 2 Duo T5870 Mobile @ 2000 MHz
  According to the manufacturer, this kit allows you to work with the 667/800 MHz memory speed, but the problem is that reference programs show the actual frequency of the ram at 399 MHz.

  Question No. 1:
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  (b) how to change to a 800 MHz

  Question No. 2:
  I'm going to buy a processor
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  and install it in the computer
  and increase the memory of 2 x 4 GB 800 MHz (8 GB)

  I explained that this possibility is provided for by the manufacturer according to the Maintenance Manual for:
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  Satellite L300/L305
  Satellite Pro L300
  EQUIUM L300
  SATEGO L300
  (PSLB8x/PSLB9x)
  (PSLBAx / PSLBBx)

  If this operation will help to improve system performance

  I put t know what programs you use and if it is good or not if this info can be good and perhaps not. I put t know. The fact is that you n t have one any influence on the functionality of memory and I doubt that you can do something and change some values.

  Exact specification for laptop laptop does not for me but I think that Satellite L300 must have Intel GM45 chipset and I presume that for your motherboard FSB is 667 MHz. You can improve up to 8 GB and compatible 4 GB RAM module has PA3670U-1M4G part number.

  Upgrade CPU on Satellite L300? I put t know man. A friend of mine has this model of laptop and I don t know if it's the right decision to spend money to upgrade this old model of laptop budget.
  http://APS2.toshiba-tro.de/KB0/TSB9401AX0001R01.htm

• Reorientation of Exchange 2010 DAG DR - OWA to the primary site server

  Hi all

  Recently, I had a problem with one of our customers Exchange servers.

  Scenario: they have two servers configured as DAG Exchange. We are in production and other is hosted on the website of DR, both servers had their own access OWA through different URLS.

  Problem is when users try to access the OWA DR, it loads the web interface, without any problem, but once they have entered the credentials of the user, it redirects to the active node (production site) OWA and open their emails.

  I checked if there are directions re URL are configured in the DR, but negative exchange server. Earlier, they are used to access OWA both at the same time.

  Any idea on this.

  Thank you

  Hello

  Your question is beyond the scope of this community.

  I suggest that repost you your Question in Exchange for TechNet Forums.

  https://social.technet.Microsoft.com/forums/Exchange/en-us/home?category=ExchangeServer

  Or here:

  https://social.technet.Microsoft.com/forums/Exchange/en-us/home?Forum=exchangesvrgeneral

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• How can I find speed of the ram in my computer?

  I just got my HP dv6 6117dx laptop today

  I love this laptop. One thing I love, it's that it has 4 GB memory DDR3. Another thing I like is that I can pass it to a huge 16 GB.

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  Hello

  You can use CPU - Z to check. How very fast go to www.crucial.com and enter the info from your machine, it will appear the results for you. You can buy RAM from there or use the info to buy elsewhere.

  Kind regards.

• How to get the maximum supported ram speed

  Hi, I HAVE a laptop COMPAQ PRESARIO CQ 60 132 - el and I want to upgrade the RAM. I have now that support max 8 GB, but I want now, which is the maximum speed of the ram supported by Mhz, in fact I have 3 GB ddr 2 sodimm 4

  programmatically Z CPU at 400 mhz.   Please help me! I am grateful for!

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  You have 32 bit Vista OS (can support max ~ 4GB RAM)

  Your computer laptop support up to 4 GB of RAM MAX - so even if you install OS 64-bit, your motherboard only supports up to 4 GB in the first place.

  You can replace a 1 GB of RAM from the slot with 2 GB PC2-6400 DDR2 667 MHz SO-DIMM SDRAM, but the cost of RAM will be huge compared to the performance & capacity that he proposed as these types of RAM (DDR, DDR2) are not used in recent laptops & they are 'very precious' for - $ 100 for a key 2 GB DDR2.

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• What is the highest speed of RAM I can install in my DV6-3112sa?

  What is the highest speed of RAM I can install in my DV6-3112sa? The factory installed is RAM PC3-10700 (1333) installed.

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  Avevo gia heard Vostra assistenza a qualre mi aveva avvertito di aggiornare November he bios e siccome sul Server e da ESXI 5 mi aveva fatto una download live linux e it bios.ora che pero' ho need di has it lavoro accorgo che mi he bios downloaded by windows, I wanted quindi che tipo di sapere e bios download by e aggiornamento is dopo dovrei fare some settaggio nel bios stesso per vedere rates the RAM.

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• How can I determine the RAM bus speed?

  Hello

  I installed the new 4 GB RAM replacing the previously installed 3 GB of RAM. The previous 3 GB of RAM has the 667 MHz bus speed (I found it in the user manual). The new 4 GB of RAM, the seller told me that has the 800 MHz bus speed. Now, I want to be sure that the seller does not deceive me, and he gave me the speed of 800 MHz RAM bus. How can I determine my installed RAM bus speed? My system configuration is the following:

  Windows 7 Ultimate 64 bit

  2.1 GHz Core2Duo

  4 GB OF DDR2 RAM

  Intel GMA 4500MHD

  Model: Acer Aspire 5738

  I have two modules of DDR2 soDIMM, previously, I had a 1 GB DDR2 667 MHz + a 2 GB DDR2 667 MHz RAM = 3 GB DDR2 667 MHz RAM (in my manual of the system provided by Acer)

  Now, after replacing, I have two 2 GB DDR2 800 MHz RAM = 4GBD DDR2 800 MHz RAM (as the salesman told me and I saw written in the package when he was unpacking and installation)

  How can I determine my RAM bus speed and be confirm that I really learned the 800 MHz? Please someone help me with this. Thank you.

  Four ways I see real quick:
  1 - the label on the RAM (assuming that it is there, and this truct you he has not changed it).
  2 - install the CPU-Z.  It will be listed in the memory tab.
  3 - install Belarc Advisor.  It also lists only (as well as much more information on the system.)
  4 take a look at the POSITION of the screen when the system boots - he must view RAM info.

  All the foregoing, guess however that isn't only MHz 800 RAM installed, but that the system is actuallyrunning at 800 MHz.
  Here, CPU - Z is the best choice, because it will give you the actual manufacturer for RAM; You can use it to find the specifications of the manufacturer.

  HTH,
  Chris

  [If this post can help solve your problem, please click the 'Mark as answer' or 'Useful' at the top of this message.] [Marking a post as answer, or relatively useful, you help others find the answer more quickly.]

• Check the speed of the Ram on Compaq 6710 b

  Hey guys,.

  So I upgraded my Ram and disk HARD everything works beautiful (thank you banhien for help)

  I upgraded the Ram to DDR2 4200 (533 Mhz) to 6400(800Mhz) of DDR2.

  How to check my ram is actually been comfigured to run at 800 Mhz instead of 533 Mhz?

  Thank you

  Hello:

  You need to double the reading you get since it's DDR mentally.  This means that your memory is clocked at 667 MHz.

  The Mobile Intel 965 chipset in your laptop can run at a maximum speed of 667 MHz memory.  That's why your downclocked to memory PC2-6400 800 MHz to 667 MHz.

  The desktop version of the chipset handles the memory at 800 MHz, but the mobile version isn't that I discovered the other day...

  http://Ark.Intel.com/products/29822/Intel-82PM965-memory-controller

  Paul

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