Question about the construction of cube / query performance (11.2.0.3)

Hi, I have a stupid question on the performance of cube generation. By choosing the precalc %, is linear (or nearly linear) construction time to that? for example if you select 10% going to be 3 times faster than the selection of 30%? Also, is it fair to assume that if only 10% of the values are precalculated, an average end-user queries have to hit 3 times more data and therefore be about 3 times slower?

Sorry, this on a virtual computer on your laptop, so test different configs build takes forever (I still have a load of cube really complete). Guess I should not be trying a cube Sun 15 on a virtual computer on your laptop, but trying to sell a DBA on the fact that she could improve the performance of our mini - DW.

Thank you
Scott

Aggregation based on costs (aka "Pre-computes percent") was introduced in 11.1 as a simpler alternative based on the level of aggregation. Product management dream was a linear parameter, but the complexity is quickly apparent. Which could measure the linearity against? The generation time? Time of the query? Total size of the disk? The result the balances of all of these factors, but is linear against any of them. Fortunately, behavior level percentage precompute was fairly consistent between cubes and patterns in our experience, so I can give you a rough characterization. But keep in mind that this is a guide only - you have to experience on your own scheme and a system to see what works for you. In particular, you must balance your own requirements on construction time, time of the request and the disk size.

* 0% *-this means no precomputation at all, so all data access will be dynamic. This is the recommended setting for the top of the page partition of a cube. If, for any reason, you want to use for the scores of leaves as well, then I advise you pass a cube uncompressed.

* 1% *-he pre-computes the smallest part of the cube that is allowed by the algorithm and would take certainly greater than 1% of the time taken by an accumulation of 100%. For partitions of leaves, it is usually best to increase the amount because you'll get much better query response time for not much more profitable in terms of disc size and the generation time. It may be a good level for the top of the page partition of a cube, but should be used with caution because the top of the page scores are often too big to pre-computes.

* 2%-19% *-these levels does not seem to be a lot of benefits since the amount of time and the total size of the disk is almost identical to a construction of 20%, but queries are slower.

* 20%-50% *-this range is probably the best compromise in terms of construction compared to the time of the query. The default value of the AWM is 35%, which is a good starting point. Lower it to 20% if you want a faster version and get up to 50% if you want to replace the faster queries. The setting is close to linear in this interval than outside it.

* 51%-99% *-you should probably avoid these levels, although I've seen 60% used in practice. The reason is that while the size of the cube and the length of the construction increase rapidly, the queries do not receive proportionally faster. Indeed, you may find that queries are slower because the code spends more time swapping in the pages of the disc.

* 100% *-this will be pre-computes all (non-NULL) cells in the cube. It may be a surprise after my advice about 51%-99%, but 100% is a reasonable level to choose. This is because the code is much simpler when you know that everything is precalculated and then stored in the disk pages.

Tags: Business Intelligence

Similar Questions

  • Question about the rollback segment when you perform the update

    Undo segment is to keep data ACI (not D). I read that it taken from the book of certification, when the update is running, all the other session will be redirected to cancel the segment to get the original version of the data. Is the rollback segment just a copy of the original version of the data? Or it's the query to return data to the original version?

    For example, the original data are:

    ID name address
    1KevinToronto

    Then I run the update query:

    update user name = 'Tom' where id = 1;

    What is in the segment of cancellation then?

    There ' 1, Kevin, Toronto'.

    or

    "update users set name = 'Kevin' where id = 1"?

    Thank you

    Kevin

    da5515c1-7630-4449-8c7c-e27665cec5c6 wrote:

    Undo segment is to keep data ACI (not D). I read that it taken from the book of certification, when the update is running, all the other session will be redirected to cancel the segment to get the original version of the data. Is the rollback segment just a copy of the original version of the data? Or it's the query to return data to the original version?

    For example, the original data are:

    ID name address
    1 Kevin Toronto

    Then I run the update query:

    update user name = 'Tom' where id = 1;

    What is in the segment of cancellation then?

    There ' 1, Kevin, Toronto'.

    or

    "update users set name = 'Kevin' where id = 1"?

    Thank you

    Kevin

    This is another UPDATE statement that will set back to the original value NAME; which can be used to RESTORE the DML.

  • Ask questions about the functionality of EA8500 MU-MIMO

    Dear Linksys

    I bought EA8500, and it arrived today.

    I have two questions about the functionality of MU-MIMO of EA8500 AP.

    1. I want to compare the performance between SU-MIMO and MU-MIMO, but there is no option to control this feature in the router admin page. Is that one of the possible ways?

    2 EA8500 supports 1733 Mbps wireless speed, but it resembles the speed of 1 Gbps ethernet cable.

    This router supports really speed 1 Gbps ethernet? or y at - it an option to support more throughput as the aggregation of links?

    Thank you

    Hi, hyeonu. For your first query, it is not possible because there is no option to disable the feature of MU-MIMO on your Linksys EA8500 router. In addition, with regard to your second, you can get a higher throughput of 1 Gbps since this is the maximum capacity of your ethernet connection.

  • An error occurred when DNS was questioned about the resource record (SRV) service location used to locate a domain controller Active Directory (AD DC) for the domain 'HAMI. LOCAL ".

    An error occurred when DNS was questioned about the resource record (SRV) service location used to locate a domain controller Active Directory (AD DC) for the domain 'HAMI. LOCAL ".

    The error was: "an existing connection was to be closed by the remote host".
    (0 x 00002746 WSAECONNRESET error code)

    The query was for the SRV record for _ldap._tcp.dc._msdcs. HAMI. LOCAL

    Hello

    Your question of Windows 7 is more complex than what is generally answered in the Microsoft Answers forums. It is better suited for the IT Pro TechNet public. Please post your question in the Forums TechNet Windows 7 Technet.

    Here is the link:
    http://social.technet.Microsoft.com/forums/en-us/w7itpronetworking/threads

    Hope this helps

  • Question about the differences in commands

    Hey guys -.

    I just had a few questions about the differences between orders that seem to perform the same function.  Can you let me know if an order is more preferable to the other and what the difference is.  I would really appreciate it as it I currently practice some INE laboratories and I see that orders change from lab to lab.  Thanks advance!

    1. When you write a static NAT for specific host 1 - is - this important if I understand the 32 subnet?

    EX: static (inside, outside) 1.1.1.1, 2.2.2.2 VS static (inside, outside) 1.1.1.1 2.2.2.2 netmask 255.255.255.255

    2. when I'm setting up a router as a CA server and it is necessary to "export" the key, whatever my method of exporting the key?  If so, in which method call for which solution?

    EX: key export cryptographic rsa ciscox pem URL nvram: cisco VS. exporting key 3des cryptographic ciscox pem 3des rsa terminal cisco

    3. If I have to mark a packet with a DSCP of X value, matter if I use the 'set dscp' VS 'set ip dscp?  If so, what is the difference?

    FXY

    Policy-map X

    class X

    the dscp X value

    VS

    Policy-map X

    class X

    X ip dscp value

    I guess pertaining to 2, if i was speaking in terms of from a cisco router to another cisco router - would terminal be acceptable?

    Yes, the "Import cryptographic key" command can take a url and also from the terminal entrance. In this terminal case wil is much easier.

    --
    Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
    http://www.Kiva.org/invitedBy/karsteni

  • Recently bought a laptop computer; A few questions about the offer Upgrade to Windows 8

    I have a few questions about the Upgrade of Windows 8 offer for new computers.  I recently bought a Toshiba Satellite S855-S5268 of amazon.com, which came with Windows 7 Home Premium.  Toshiba already has a beta version of drivers and utilities for Windows 8 for the S855 on their Web site.

    (1) I bought my laptop in July of this year, and I've not yet registered for 8 Windows Upgrade offer with Microsoft.  Am I still eligible to receive the upgrade, if I sign up soon?
    (2) if I buy the upgrade through this offer, I'll be able to download an ISO file so I can burn the installation media, or do I need to upgrade to Windows 7?
    (3) if I will be able to burn the installation media, I'll be able to erase my hard drive and do a clean install of Windows 8 (which I'd rather do, I have a lot of backups of my data).  I am aware that I would probably need to provide my product key Windows 7 Home Premium 64-bit OEM during the new installation, because it is an upgrade and not a full version; This isn't a big deal, because my Windows 7 Home Premium 64-bit OEM product key is stuck at the bottom of my laptop.
    (4) my current copy of Windows 7 is activated by seeing my BIOS (I have a traditional BIOS, not a UEFI).  If I had to switch to Windows 8 and decide then I'd rather back in Windows 7, for example, a few months later, I'll be able to do that (I burned recovery of Windows 7 with the Toshiba utility disks, which I did), and Windows 7 will continue to activate by seeing my BIOS, even after the installation (and later remove) Windows 8?
    Thank you very much!

    I have a few questions about the Upgrade of Windows 8 offer for new computers.  I recently bought a Toshiba Satellite S855-S5268 of amazon.com, which came with Windows 7 Home Premium.  Toshiba already has a beta version of drivers and utilities for Windows 8 for the S855 on their Web site.

    (1) I bought my laptop in July of this year, and I've not yet registered for 8 Windows Upgrade offer with Microsoft.  Am I still eligible to receive the upgrade, if I sign up soon?
     
    Yes, the registration period is between June 2, 2012 to January 31, 2013.
    (2) if I buy the upgrade through this offer, I'll be able to download an ISO file so I can burn the installation media, or do I need to upgrade to Windows 7?
     
    Yes, the Upgrade Wizard of Windows 8 will allow you to create a bootable DVD or you can grab the ESD file and save it.
    (3) if I will be able to burn the installation media, I'll be able to erase my hard drive and do a clean install of Windows 8 (which I'd rather do, I have a lot of backups of my data).  I am aware that I would probably need to provide my product key Windows 7 Home Premium 64-bit OEM during the new installation, because it is an upgrade and not a full version; This isn't a big deal, because my Windows 7 Home Premium 64-bit OEM product key is stuck at the bottom of my laptop.
     
    Yes and there are better ways to reinstall Windows 8 without using the installation disc, you can use the reset and refresh.
     
     

    These steps will take you through refreshing your PC:

    · Press the Windows key + C on your keyboard to show the charms (if you use a touch screen: touch the right edge of your screen and drag your finger to the left)

    · Click settings

    · Click change PC settings

    · Click general in the left column

    · Under refresh your PC without affecting your files, click Start

    Then follow the instructions that will be provided on-screen to cool your PC.

    (4) my current copy of Windows 7 is activated by seeing my BIOS (I have a traditional BIOS, not a UEFI).  If I had to switch to Windows 8 and decide then I'd rather back in Windows 7, for example, a few months later, I'll be able to do that (I burned recovery of Windows 7 with the Toshiba utility disks, which I did), and Windows 7 will continue to activate by seeing my BIOS, even after the installation (and later remove) Windows 8?
     
    As long as you have a recovery disk which you should create or use the construction in the recovery partition, Yes, it will self activate.
    Thank you very much!
  • Questions about the implementation of clusters of storage and DTS on active cluster

    I have a few questions about the implementation of clusters of data store and SRS storage in VSphere 5.1.

    We have a data center with about 15 HP blades and a few servers non-lame.  The hosts are all either VSphere 5.0 or 5.1.  Our back-end storage is an EMC VNX 5700 with about 20 stores of data.  All the VMWare is managed by VCenter 5.1 running on a dedicated physical machine.

    Currently, each data store is used individually; No piles of data store are put in place.  When a new virtual machine is created, the administrator usually chooses the data with the most space store.  Periodically, we will go back and manually storage vMotion machines to balance the load.

    Recently, we have expanded the VNX storage, so we now have LUNS in different pools, with different levels of performance.

    What I would do is set up for the data store clusters, so that us when a virtual machine is created, the administrator must not know what data store is in which pool.  Also take advantage of the DRS storage so that the burden of storage will be "refine" himself a little.

    I know the setting up of a cluster of storage in a 'clean' environment is quite simple, but my concern is creation/conversion data warehouses existing in active production in the cluster, while they are used.

    If I access the screen "data warehouses and store data from clusters ', right-click on the data center and create a cluster, and then move the various data stores in the new cluster, will there be an interruption in the production running systems?

    I also wonder about activation of storage i/o control.  It is not currently enabled on data warehouses.  I know it's useful for the StorageDRS, but will be allowing any negative impact on the system?  If I turn on the warehouses of data, is there anything else I should do or set in addition to all that allows him?

    Finally, we are in the process of Site Recovery Manager configuration.  SRS has an impact on the configuration of the data clusters and DTS store?

    Thanks in advance for your comments.

    Mike O.

    Gregg Robertson wrote:

    Hello

    Clusters of data and using DTS store doesn't impact RS even if you create a cluster of data store for storage of replicated data and another for everyone else, this way you machines virtual you want to replicate are not moved on warehouses of data that are not replicated , but will still have the ability to move if there is a conflict.

    Gregg

    With all due respect but SRM and DTS don't go together. SRM does not at all support the use of DTS. So if you are configuring SRM forget DTS for now.

    Reason for this is that SRM knows no DTS and VMs can be in flight when a failover should occur, and bad things can happen. Also, the protection breaks when a virtual computer is moved between data warehouses in a cluster data store.

    In short: don't go there.

  • A question about the virtual processors in the prompt

    Dear Sir

    I have a general question about the number of virtual processors in the guest system.

    I use VMware ESXi 4.0.

    Say if my physical host has only 2 cups carrots (with or without HT should be the same), then is - it true that I can only attribute 2 virtual processors per virtual machine?

    Is it possible to give 4, 8 virtual processors in virtual machines?

    In my drop down menu I can NOT choose more than 2 virtual processors per virtual machine, I want to just make sure that it is not the problem of license.

    Thank you very much.

    Nanfang

    Hi Nanfang,

    linanfang wrote:

    So the general rule is the number of vcpus don't CAN NEVER exceed the number of physical processors. Is this correct?

    Replace "physical cpu" by "physical cores" and you are right, because a vCPU is mapped to a kernel. For example, you can assign 4 vCPU with a Quad-Core processor.

    If you think about it, it makes perfect sense. If you would be able to map 2 vCPU to the base, the vCPUs had to wait for them all the time because the physical kernel can simply perform an action at a time, why you would decrease the performance of your virtual machine by setting 2 vCPUs.

    It is not changed in vSphere 5.

    Concerning

  • Question about the OSB proxy service

    Hello

    I'm new to the world of SOA/OSB. I'm working on a POC from the OSB for our existing application. I have a question about the definition of the URL endpoint to the proxy service. It is possible to specify a generic url endpoint to a proxy service. Something like / SomeService / *. I tried and got errors. Is it possible to do somethig like that or it is a mistake on a conceptual level.

    Thank you

    anything you type in the uri of the endpoint of entry will be the contextroot to your service, so /SomeService should indeed be sufficient or as mentioned Pierluigi/SomeService/blabla is also valid (Betty is not a parameter query, but only a part of the contextroot)

    If you want to use a service like http rest

    / SomeService/blabla would still be the contextroot, and after that, you can use the query parameters

    / SomeService/badarou? var1 = test & var2 = test or/SomeService/blabla/employee/id/1

  • Questions about the export of PDF with India CS5.5

    Hey all,.

    A few questions about the export to PDF of the most recent version of India.

    First of all, I noticed it seems to take much more time to access a PDF file. Any suggestions about how to speed up the process? It took 8 minutes to generate a PDF low resolution (for printing) of a document of 24pp with placed images and vector graphics. Wow, that's a long wait, especially for evidence.

    Second, the background task... If I get it will make this PDF of 8 minutes and then more work on the document, which is exactly in the PDF? Usually, I have save before making a PDF or printing. Thus, the latest version is saved which will be in the PDF?

    (Either incidentally, this ability to work on the doc while generating a PDF file seems kind of weird. Generally, we do a PDF for proofing, or even for printing, when any changes have been made and that everything is "final". Therefore, I see no advantage in being able to work on my document while it is making a PDF file, I am probably once your revisions for the moment. I must say that I like the progress bar that you get when you perform an interactive PDF, as you know that you can not work on the document when it is on the screen...)

    Thank you as always.

    Good, people. Wanted to just follow this and post my results. It turns out that the problem is somewhere in the Illustrator file. I never had the time to guess what work plan was the culprit. Other India files PDF files is transparent and not a lot of time.

    No resolution, unfortunately, just good to know that it is not all India files on my system. Phew!

    THANK YOU for your advice.

  • A question about the REEL in sqlplus command

    Hi all


    I have a question about the order of the COIL and I would be grateful if you could kindly give me a helping hand. Consider the following sql script.
    SPOOL result.txt
    SELECT * FROM mytable;
    SPOOL OFF;
    It works pretty well, and all the contents of the table "MyTable" is exported to the textfile "result.txt". However, sqlplus also prints the number of lines
    Print after each query. So after you run this script, the end of the file, I always have a line like
    ...
    "20541 lines returned"
    How can I avoid this line (the number of returned rows) in my output file?


    Thanks in advance,
    Dariyoosh

    Type this command prior to winding.

    set feedback off
    

    Kind regards
    Prazy

  • Question about the guest of dashboard and column

    My question about the dashboard and column prompt:


    (1) prompt dashboard usually work with only for columns that are in the topic area. In my report, I have created some of the columns that are based on other columns. As I have the daysNumber column that is based on two other columns, because it calculates the difference between two dates. I can't find this column invites when I create dashboard. I need to make a guest on this column.

    (2) to one of the column, I have only two values 1 and 0. When I create a prompt for this column, is possible that falling of drop down it displays 'Yes' of 1 0 and 'No' and always filter the request?

    Hello...

    I forgot to tell you one thing... but performance wise... If you create the column in RPD itself, it is good and easy to maintain.
    If you want this feature also... once again you choose directly the column in the area of topic... ;)

    Thank you & best regards
    Kishore Guggilla

  • A few questions about the difference between the Satellite P70, L70, S70

    Hello, I have a lot of questions about the P70, L70, S70 series that come with a 1920 x 1080 panel.

    (1) what are the differences between the L70 and S70 series? With the exception of the RAM and HARD drive capacity, books seem pretty identical.

    (2) P70, L70, S70 doesn't support a 2nd HARD drive or it's just the P70 series that support?

    (3) all the three (P70, L70, S70 series) come with the same TFT panels?

    (4) of the above series, which supports mSata?

    (5) all the model of each series are delivered with support from mSata? For example, it could be that L70 - a - 13 m supports mSata is not the case of the L70-a-146?

    (6) all the foregoing, are delivered with a S - ATA II or III S - ATA interface?

    (7) who is the best of these series listed? I'm trying to understand what makes the big difference of S70 to P70 except for the envelope for example.

    Thank you in advance.

    > (1) what are the differences between the series L70 and S70? With the exception of the RAM and HARD drive capacity, books seem pretty identical.

    What models Sat L70 and S70 do you mean exactly? There are different L70-xxx-xxx and S70 models on the market that supports different hardware specifications.

    (> S70 2) P70, L70, support a 2nd drive HARD or is - it just the series P70 that support?
    As you can see in this [Sam P70 HDD replacement document, | http://aps2.toshiba-tro.de/kb0/CRU3903II0000R01.htm] the P70 series supports the 2nd drive Bay HARD, BUT even if there is a 2nd HARD drive Bay, this does not mean that you can use the 2nd HARD drive. In the case where the 2nd HARD drive Bay are equipped with HARD drive connector, you can use the 2nd HARD drive

    I also found the [Sam L70/S70 HDD replacement | http://aps2.toshiba-tro.de/kb0/CRU3703HG0000R01.htm] the document on the Toshiba page and there I see this 2nd HARD drive Bay is not available

    (> 3) all three (P70, L70, S70 series) come with the same TFT panels?
    See point 1). Different P70, L70, S70 models were equipped with different material parts.

    (> 4) of the series above, which takes in charge mSata?
    As far as I know that some P70 models are equipped with an mSATA SSD of 256 GB.

    (> 5) do all the model of each series are delivered with support mSata? For example, it could be that L70 - a - 13 m supports mSata is not the case of the L70-a-146?
    See point 4) not all models supports the same hardware specifications

    (> 6) all of the above, come with a S - ATA II or III S - ATA interface?
    I don t think that SATA III is supported. I guess it would be SATA II

    (> 7) which is the best of these series listed? I'm trying to understand what makes the big difference of S70 to P70 except for the envelope for example.
    Not easy to answer because there are too many models released in Europea.
    And not all models are available in each country. So I guess you will have to look for the models that have been released in your country.

  • A few questions about the upgrade on Satellite A300-144

    Sorry for the typos, English is not my mother tongue.
    I want to ask some questions about the upgrade of a300-144.

    * Some info first.*

    CPU: T2370 ([http://ark.intel.com/products/34445/Intel-Pentium-Processor-T2370-1M-Cache-1_73-GHz-533-MHz-FSB]).
    Chipset: GM965 ([http://ark.intel.com/products/29821/Intel-82GM965-Graphics-and-Memory-Controller]).

    * Questions.*

    1. my frequency of laptop memory at 533 MHz, supports 667 MHz memory controller, memory modules can work at 667 MHz. Is - this because CPU FSB 533 MHz frequency and new processor at 667/800 MHz FSB will fix it or it is hardcoded in the BIOS?

    2 Intel said that the size of max memory for my chipset is 4 GB (2 x 2 GB), but Toshiba says that only 2 GB (2 x 1 GB), who is right?

    3 I know, taken of my CPU is μFCPGA-478 aka socket P, max FSB 800 MHz, max 35 W TDP, so T9500 ([http://ark.intel.com/products/33918/Intel-Core2-Duo-Processor-T9500-6M-Cache-2_60-GHz-800-MHz-FSB]) is a compatible processor or there are some limitations in the BIOS?

    > 1. My frequency of laptop memory at 533 MHz, supports 667 MHz memory controller, memory modules can work at 667 MHz. Is - this because CPU FSB 533 MHz frequency and new processor at 667/800 MHz FSB will fix it or it is hardcoded in the BIOS?

    The speed of the memory is related on the material. This means that the FSB is responsible for the limitation.
    If the FSB would allow support 667 MHz then the memory would also at this speed.

    > 2. Intel says that the size of max memory for my chipset is 4 GB (2 x 2 GB), but Toshiba says that only 2 GB (2 x 1 GB), who is right?
    The memory depends on the chipset. So if the chipset supports 4 GB of RAM, you should be capable of this move to 4 GB of RAM

    > 3. I know, my CPU is? FC-PGA-478 aka socket P, max FSB 800 MHz, max 35 W TDP, so T9500 (http://ark.intel.com/products/33918/Intel-Core2-Duo-Processor-T9500-6M-Cache-2_60-GHz-800-MHz-FSB) will be a compatible processor or there are some limitations in the BIOS?

    It might be possible that the new processor would be fully supported by the BIOS, but in most cases it should not be a problem if the chipset would support the new processor.
    But as far as I know the upgrade of the CPU is not supported by Toshiba or any other manufacturers of portable and its your own risk to run laptop with the new processor.

  • Question about the recovery partition

    Hello.

    I have a question about the recovery of HARD drive partition.

    If I do the operation to clear the hard disk option in the wizard it will remove * all * or it will keep my partition recovery in this way I can come back later. I want to know because I would like to put on a different OS.

    I know he said he would, but caution in the PDF, I found it says that on a normal recovery too (that he would remove each partition) and I'm a little confused about how the recovery actually worked.

    Thank you.

    Hey Buddy,

    To be honest I n don't know what you mean exactly with this option to erase.

    In General, Toshiba Recovery disk will wipe your entire HDD to restore factory settings correctly. This means that if you start from that disk and follow the instructions on the screen, everything will be removed.

    In addition, the recovery disk doesn t create a recovery partition. It is not available. Disk copy just the files on the second partition in folder HDDrecovery to start an installation of HARD drive recovery.

Maybe you are looking for

  • After the 38.0.5 update, firefox is very slow!

    It happens after update to 38.0.5. I disabled "Hardware accelerate", also using the latest video driver. Please fix this.

  • On my work PC, I can play music stored on my Macbook at home

    My son gave me a large USB hard drive on which he had copied all my CDs we have connected the HD to an old Mac laptop, we had at home and all those titles (titles only, file copy off) imported into my ITunes library, using my AppleID. I thought it wo

  • Instructions to remove the keyboard of Satellite S855

    My friend poured water over his S855 keyboard and the computer does not work. As this voids the warranty, I wanted to remove the keyboard, dry the unit and inspect/test for damage. I have worked on many laptops, but am not able to understand how to r

  • Lenovo G40 ~ 70 ram upgrade problem

    I bought a lenovo G40 ~ 70 cell and I wanted to update my ram. It contains 4 GB of ram and I wanted it go to 8 GB. What kind of ram card should I buy and after upgrading my computer will have problems? Thank you.

  • HP psc 750xi: printer psc 750xi stuck in auto test and ink cart move.

    When you reconnect psc 750xi printer for the office, when it is powered on, psc 750xi printer is stuck in the self test and ink cart move. The printer is recognized by the computer so that it seems to be a problem with the printer. Diagnosis of HP is