high avg disk queue length

Similar Questions

• The disk queue length

  I have a dell inspiron 3520, windows 8. I had windows update problems, and I can't update to windows 8.1. I can not reset or refresh windows 8. I was checking different things on my laptop and I went into advanced system tools and generated a system health report, and I got this warning: the average disk queue length is 3. The disc may be its maximum transfer due to the flow capacity and disk seeks. What does that mean? I would be very happy any help I can get with that.

  Thank you

  Cheryl Christopherson

  Suggestion in this thread: http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/disk-queue-length-problem/4ee9b15a-0c02-435b-92ab-9d9a41ae84a5

  See also:

  Ref: https://technet.microsoft.com/en-us/library/cc938625.aspx

  AVG. disk queue length. logical disk or physical disk, to determine the number of i/o requests in the queue for the service. Note that this may overestimate the actual length of the queue, because the meter includes requests queued waiting and continuous training. If the average disk queue length is greater than two times the number of batteries, then you are probably developing a bottleneck. With a set of volumes, a queue that is never more short the number of active physical disks that you develop a bottleneck.

  Figure 8.8 shows a bottleneck of disk with high disk usage and a long queue.

  

• Server 2003, Server SQL 2000 gel. maximum disk queue

  Yeh yeh her legacy I know but its still in production.

  Here are the specs;

  • farm of about 30 guests
  • vsphere vcenter 5 servers
  • San iscsi EMC to 24 pins
  • Server is server 2003 32-bit. the memory is about 3.4 GB used of CPU resources available 4 GB is 2 Sockets with 4 cores per socket. P2V has had a number of years
  • all other servers seem to be good and have performance issues.

  I have a question where the 2003 server is suspended and become unresponsive. End users who use the software and the website that communicates with the SQL database also complain of poor performance. the UI Office stops, then crashes at the same time

  I checked the performance of the server vsphere host running this comments and resources are not overloaded. Maximum rate of CPU is around 40%

  I loaded the performance monitor on the comments and added leading % and page of memory/cpu, av/disk queue counters. When the user interface is blocked, users experience performance issues line av/drive hits 100%. Queue drive returns to normal and the responsiveness performance returns.

  I also ran perfmon on another server that resides in the same data store server and vsphere and I don't see any of the questions / crashes or maximums of the disk queue, so it seems to me be associated comments.

  Does anyone have any suggestions?

  Yes you can do for the person who is affected, yes as by EMC to proceed with the restart,

  I always suggest don't do nothing too your storage space for production servers, perform a good capacity analysis and ensure that the load across storage are well balanced.

  All the best and hope you will fix the problem...

• Latency of disk queue

  Question about queue of disk latency. What are the acceptable numbers for the latency of writing, reading and command queue on the ESX host. I'm trying to figure out high that they can before guest virtual machines disk i/o is impacted.

  You might be interested in this document. Associated with Figure 4, she suggests that 50 ms of latency may start to affect latency sensitive applications.

  http://www.VMware.com/files/PDF/scalable_storage_performance.PDF

• AMQP queue length

  I would like to create a simple script that returns the length of all the queues defined AMQP broker given.  Is there a method to get a length of queue AMQP via AMQP Plugin VCO?

  Thank you

  Management and monitoring are not part of the AMQP standard. It's so they are not part of the plugin. However, all providers provide a kind of management or supervision of the API. If you use RabbitMQ you activate the plugin management as described in http://www.rabbitmq.com/management.html.

  Then, you can use the HTTP-REST query api endpoint served by the management plugin (http://hg.rabbitmq.com/rabbitmq-management/raw-file/rabbitmq_v2_8_2/priv/www/api/index.html) plug-in

• OEM 12 c reports average load (queue length) * core * is this really the right way?

  I just noticed on our exadata load average was way high school (from our normal) at 40 + as seen above and availability. I was curious why OEM does not have this flag.

  I got alerts defined for report > 20. Well it turns out that oem metric is the average load by heart for only 40 + is only a 1.68 metric table.

  This should really be * core * when all of the unix tools show the cumulative?

  Would be useful if it was compatible with the native tools.

  Reflection... it does not make sense... Looking at the models that I can not simply put '20' in there because may represent a valid threshold for a box of 20 + cpu, but makes no sense for a box of cpu 2. Where '1' may represent an acceptable threshold for a box of 20 cpu or cpu box 2. When it's an average load of 1 * CPU *.

• Windows Oracle disk queue 100%

  Hello

  I use a database of Oracle 9i on Windows Server 2003 Standard.

  When I run a query that runs through about 30 large tables the disk i/o goes up to 100% for a few minutes.

  Are there performance advice you can give me to study?

  I'm guessing that something is configured wrong on the Oracle side, but I don't know where to look.

  Its a Raid 5 disk configuration.

  Thank you.

  Joining tables that much is not exceptional. I'm working on view now po_negotiated_sources_v EBS who joined about 20 tables. There are many points of view with more.

  In General, I discover I/O no excessive disc not as a problem but as a symptom of a problem. The solution is not not to adjust the e/s, but to remove the need for input/output. If you follow the usual SQL tuning cycle, starting with the collection of information on the execution plan, tables, indexes and statistics of the object and system.

  --

  John Watson

  Oracle Certified Master s/n

• Foglight | Monitoring Exchange | EXC replication copy queue length

  Hello

  Scope of the rule: EXCReplication

  Scope the object: No available instances

  I am unable to run the report query for this rule due to no avilable instance.

  I've attached screenshots

  Hello

  I am trying to understand the problem here.

  Foglight comes with lots of rules out of the box for a large number of items.

  If the element is there, and the data is there, the rule kicked in and verify the information (that's the idea behind DATA driven rules).

  If the item or data are not there, there is no reason to run the rule.

  Golan

• the queue length

  is there a way to get what it's worth and the value via powercli?

  You can follow the instructions in KB1267.

  And to do this for PowerCLI, you can use something like this

  $esx = Get-VMHost -Name MyEsx
  
  $esxcli = Get-EsxCli -VMHost $esx
  

  # List the current value$esxcli.system.module.parameters.list("qla2xxx") | where {$_.Name -eq "ql2xmaxqdepth"}
  
  # Set the new value$esxcli.system.module.parameters.set($false,"qla2xxx","ql2xmaxqdepth=64")
  

  The code example assumes a QLogic HBA card, if you have another type of update accordingly.

• With VFoglight 6.1 process monitoring

  Hello
  I'm trying to get more watched through the console of VFoglight. Anyone who has gone through or have seen a way to do this?

  Recommended Monitor Baseline Performance counters

  ID

  Meter

  Description

  Meaning

  1

  CPU - % time processor

  The percentage of time processor used for user processes or transactions as opposed to sitting idly CPU system

  More use of the processor, more processors are used the user to process or system transactions

  2

  System - Processor queue length

  The number of threads waiting for processor

  The higher the queue, the more threads waiting on processors to process instructions on the CPU

  3

  Memory - Pages/sec

  Pages, reading and writing memory

  More the memory usage, processes are too busy in memory

  4

  Paging file-% of use for _Total

  The percentage of all page files that are in use

  More use of the swap file, more memory is needed to support the system exceeds the physical memory on the server

  5

  Physical disk - AVG. disk queue length.

  The number of read and write requests pending for the physical disk subsystem

  More average disk queue length, the more resources are waiting for previous applications to the end before responding to their request

  6

  SqlServer: General statistics - user connections

  The number of users of the system

  The more users indicates that the server is unable to load system

  7

  Network bytes/s interface

  The bytes sent and received via a single network adapter

  Determine if excessive network traffic occurs on a network card, or if the system has isolated problems on the SQL Server with no network traffic

  8

  SQL Server: locks - waiting for latches/sec - _Total

  The application of lock waits per second

  Determine if an excessive blocking is limited to resources for users to access the system

  9

  System - Threads

  The number of threads on the computer

  Determine if the number of threads exceeds the typical reference level that indicates more than process are occurring on the system

  10

  System - Changes of context/s

  The number of processes that are changing threads per second

  The change of context, plus the server is stressed

  Thank you
  Paresh

  Paresh,
  have you watched or read the documentation on the physical operating system followed by cartridges and what they can provide for you? You must have vFoglightPro to use them, but they might be what you're looking for.
  -larry

• Windows 7 64 - bit, GA-970-a-DS3P, slow SATA 3 HD and USB 2.0 also issues

  Let me start this way:

  Material:

  Motherboard: GA-970-a-DS3P

  (1) WD Caviar Black HD: 3 amendments of 1 TB each. One for the OS, one for applications and one for Swap. (Don't ask how I ended up with this config: it's a long story of upgrade).

  (2) graph GTX 550 Ti card.

  (3) AMD Phenom x 4 965 BE: all 4 cores unlocked. DO NOT overclocked.

  (4) RAM DDr3 8 GB (2 sticks)

  (5) rest include 1 SATA DVD drive, Cooler Master monstrous fins CPU cooler (which cuts my fingers twice) and a power supply 650W (Cooler Master)

  Software:

  (1) Windows 7 64 bit ultimate (new installation)

  (2) MS Office 2010

  (3) Acronis True Image 2012

  (4) cloud of Creative adobe: Adobe Acrobat Pro XI

  The ORGANIC parameters:

  a value of 1) all SATA AHCI.

  (2) active xHCI. (no idea)

  (3) active eHCI. (no idea)

  Drivers:

  1st install Gigabyte SATA AHCI and USB 3.0 drivers drivers. All keyboard & mouse drivers are from Gigabyte.

  2nd configuration (after that I discovered that it was slow death): DriverMax provided SATA 3.0 AHCI drivers.

  Windows start up the GUI login screen in 40 to 43 seconds after the POST.  (Used to make less than 30 seconds before I installed MS Office).

  Problem and diagnoses that I made:

  (1) primary HD is extremely slow to respond. It takes just an inordinate amount of time to respond to the high activity of HD. (Like when I try to copy a large file on the C drive or read from drive C).

  (2) I used Perfmon.exe to monitor disk queue length and % disk time Avg. Length of queue disk on drive C starts from 0.117 and amounts to 24,26 within 20 minutes once I started. % disk time is high at 118.98 or even above.

  (3) surprisingly a USB 3.0 flash drive has reported a speed of 118 MB/s on a copy of a file of 3.4 GB D USB 3.0 drive

  (4) USB 2.0 reported avg 28 MB per second, which was expected.

  (5) after that I removed the drivers from Gigabyte SATA, I used one of Drivermax (don't know what it was).  Yes, I remove the old drivers, rebooted and then installed drivers drivermax.

  (6) disk queue length dropped to 0.28 on average when copying to and from the drive C and even under heavy operations.

  (7) Windows experience index stays at 5.9 for HD primary.

  (8) Avg speed of drive C is now about 128 to 132 MB/second (seriously?)

  (9) I don't find the exclamation points or question marks in Device Manager.

  (10) now, since yesterday, the speed has dropped again down (no updated driver, but the critical Windows updates made). Avg disk queue length again increased slowly to about 24.23.

  (11) what I did a chkdsk c: R, but could not find any errors of surface HD.

  (12) I am past controller cables and plugged in the different plugs (which cut on sharp edges of the graphics card and the fins of the cooler: why HW manufacturers can soften the edges: they will lose money?).

  (13) USB 2.0 speed has dropped drastically to 7,28 MB/second copy about 1 GB of multiple files of 12 MB each.

  Am at the end of my rope on this.

  Can I have a very problematic motherboard? Have I not dumb drivers? Or I did something wrong here?

  Any help to fix this problem of speed appreciated.

  P.S. The system is also catchy and fast with start-up less than 45 seconds, even times with connected devices. Opening apps are fast and load system (also long that I do not touch the C drive) are faster.

  Thanks in advance

  I misinterpreted the word 'no'... :-)

  Clone of the boot drive on the disk used for the page file after removing the partition on the drive of page file as in reduce to unallocated space. Your current boot drive is perhaps not the strongest of its kind.

  It can be done with the help of Aomei partition Wizard, free for home use.

  http://www.aomeitech.com/aomei-partition-Assistant.html

  If the computer seems to be ok, stop the execution of the performance monitoring software. It can drive a person crazy. Glance for other stuff that can slow the system down...

• Ran Diagnostic Report/average line of the disc is 2

  About 2 weeks ago, I upgraded my Vista laptop to 1 GB. It works perfectly, but I ran a Diagnostic report and it showed in the information Section that average disk queue length was 1. I did a defragment disks and changed it to 2, but I still get the same message informtional, now with 2 instead of 1.

  Should I do something else because it works well? The only change I noticed is that I had to close it with the button yesterday because the screen was grey long after many updates of Windows. He opens normally today and made a few configuration. I got scared when I saw the screen after seeing some comments on a Blue Screen of Death or something like that, but I'm sure it was gray not only blue.

  Thank you

  AG

  Hi Ana,

  Length of queue Disk Avg... This counter is in fact closely related to the % disk time counter. This counter converts a decimal value to the % disk time and displays. This counter will be necessary at the time where the disk configuration employs several controllers for several physical disks. In these cases, the overall performance of the disk IO system, which consists of two controllers, could exceed that of an individual disk. So, if you look at the % disk time counter, you would see only a value of 100%, which represent the total potential of the entire system, but only that he had reached the potential of a single record on a single controller. The actual value may be at 120%, which displays the Avg. disk queue length counter. 1.2.

  The tab disk in the resource monitor (Start - Run - Resmon, or just the button resource monitor in the performance of the Task Manager tab) will show the disk of process activity to help understand this specific process is causing so much disk activity.

  For reference:

  The monitoring queue length

  http://TechNet.Microsoft.com/en-us/library/cc938625.aspx

  I suggest you send the request to the Forum here to improve the assistance on the issue:

  http://social.technet.Microsoft.com/forums/en-us/categories

  Let us know if you have other questions about Windows in the future. We will be happy to help you.

• Problems with PerfMon - cannot add counters

  Hello everyone.  I registered just to ask this question, which I couldn't find after a long time consult Google.  I come to you in the hope that when Google has failed, you will not!

  I use a program that some of you may be familiar, called Samurize (http://www.samurize.com/modules/news/), who does a lot of things; what I use for most allowed, in a blink of an eye, discern my CPU usage, RAM usage, information network, availability, hard disk space and my schedule on the calendar, among other things.  I know it is an old program and I know that it was designed for Windows 2000/XP, but it worked without a hitch (not including this one) on Vista and Windows 7.

  Recently, however, the ability to monitor CPU, RAM, upload and speed of download and availability has disappeared; all of them give me a flatline, statement I use no internet at all or my computer also (with the exception of availability, which reports that I have been on my computer for 49 days, 17 hours, 2 minutes and 47 seconds... he refuses to go to the top!).  Initially I thought it was a problem with the program.  It is not; It has something to do with Perfmon.  When I load perfmon.exe through the box run, it loads up with an error that says:

  "Cannot add these counters:

  \Memory\Available MB
  \Memory\% committed bytes used
  Defects of \Memory\Cache/s
  Defects of \Memory\Cache/s
  Time to \%Idle \PhysicalDisk (*)
  \PhysicalDisk (*) \Avg disk queue length
  \Network interface (*) \Bytes Total/sec.

  This isn't me accidentally say the same thing twice... it says what I typed on verbatim. [Edit:] Just remembered: other system monitors are perfectly fine.  Of course the Task Manager works well, but gadgets seem to work fine in my use of RAM and CPU, as well as my download balance sheet and download speeds. [/ Edit]

  It's pretty much the sum of my progress on the problem.  I found this page (http://support.microsoft.com/default.aspx/kb/300956), which seems like it might solve the problem... but being a lazy man boned, I hope that there is a simpler solution than that, those who are not "reformat".

  Any other relevant information:

  Windows 7 x 64 professional
  Updated with all official updates
  Recently spent Wi - Fi cable (apart from that, I can't thing of any change that I did with my computer)

  Thanks in advance!

  Hello SensaiOpti,

  I had the same problem. A level that your pointers to the perfmon counters are damaged, you must re-create these with LODCTR from an elevated command prompt:

  Click Start, type cmd click right cmd.exeand select run as administrator.
  At the prompt, type lodctr /r and press ENTER. This allows to repair the pointers (those that are stored in the registry).

  
  C:\Windows\System32>lodctr/r

  Info: Rebuilt successfully setting from system backup store performance counter

  After this action, it is possible that some providers are disabled. You can check the status with lodctr/q.

  C:\Windows\System32>lodctr/q
  Performance counter ID queries [PERFLIB]:
  Based index: 0 x 00000737 (1847)
  Last counter text ID: 0 x 00001560 (5472)
  Last help text ID: 0 x 00001561 (5473)

  [.NET CLR data] Performance counters (activated)
  DLL name: netfxperf.dll
  Open the procedure: OpenPerformanceData
  Collect the procedure: CollectPerformanceData
  Close the procedure: ClosePerformanceData
  First counter ID: 0 x 00001080 (4224)
  Last counter ID: 0x0000108C (4236)
  First help ID: 0 x 00001081 (4225)
  Last help ID: 0x0000108D (4237)
  
  etc.
  
  If she says (disabled) next to a provider, you can activate it with lodctr/e:. Use for the string between the [] at the beginning of the entry.

  Success

• Hard drive being highly accessible all few seconds, although it is, the computer crashes

  Since about 3 days (or at least that is the oldest I noticed it, but he couldn't have done it much earlier) my computer was freezing for 3-4 seconds, while the hard drive turns on solid. This occurs regardless of whether the computer is nothing or not constantly every few seconds. I went around the internet looking for ideas, but nothing I tried to (disable superfetch, windows search, start in safe mode, update drivers, looking for the raid drivers, disarm avg, defragmentation and simply drop each program without importance, I can get away with) had no effect.

  The computer is an Alienware M15x, I got less than two months ago (totally awesome Christmas gift). It has Windows 7 Home Edition premium on it, a hard disk of 500 GB that says all diagnostics works very good and 6 GB of ram, I had AVG Antivirus on it too (until I took it in the attempt to solve this problem), and the protection of the system (the backups and whatnot) was already disabled. I also did a restore system before it started doing this, but which did not help either.

  The only problem it says that appears when I generate a health report to the system that is the disk queue length average 2-3 and going as high as 30. I can sit and watch points every 2-3 seconds since the resource monitor, which coincides with the HDD light will the computer crashes. It does even in safe mode, and it made all the games freeze market too.

  I'm completely at the end of my tether here and nothing I tried worked, is there something I'm missing here?

  Absolutely nothing worked, I'll try to reinstall windows, and if that does not do, Alienware will repair this one way or another. Thanks for the suggestions so.

  (edit a few hours later)

  I reinstalled, and it always does, so the hard drive needs to be spoiled. guess I must return.

• Latency of DISK vscsiStats troubleshooting

  Hello forums.

  Could use an expert overview for a problem I have with some VM.  Use of resources is not the ability in some way.  No pretense of CPU but VM are slow - and often its bad or sometimes just slow.  The virtual machine had this, but for some time now, I know that we add more virtual machines in our lab, so that could explain the latency

  I would like someone offer help on using vscsiStats to vmdisk of troubleshooting related problems.  On the virtual machine, as I watched in perfmon, I noticed a somewhat long average disk queue length.  I ran vscsiStats and obtained after 30 minutes.  Please let me know if I understand this right.

  vscsiStats run with string only included latency IOs not in read/write latency.  Both drives are on the same data store.

  VMDISK 1

  Histogram: latency of IOs in microseconds (US) virtual

  machine worldGroupID

  121 min

  Max 14440236

  average 327165

  County 15524

  Histogram of the frequency

  Limit of bucket

  0                            1

  0                            10

  0                            100

  1488 500

  1929 1000

  1453 5000

  1618 15000

  1688 30000

  1070 50000

  1546 100000

  4732 100000

  VMDISK - 2

  Histogram: latency of IOs in microseconds (US) virtual

  machine worldGroupID

  159 min

  Max 14245418

  average 478629

  County 3446

  Histogram of the frequency

  Limit of bucket

  0                                 1

  0                             10

  0                             100

  1722 500

  146 1000

  136 5000

  15000 65

  30000 59

  50000 46

  100000 88

  1184 100000

  I don't really understand our provision of storage very well and I apologize I'm trying to learn it.  We use NetAPP, but I don't think that we all use the NetAPP storage.  These discs are fixed with 4 Gbps HBAS that are a SATA drive.

  My understanding of the above is the following:

  4732 written = & gt; 1 tenth of a second

  1546 written & lt; =.1 tenth of a second

  1070 written & lt; =.05 hundredths of a second

  My math may be a little off but it's a lot of latency for disk i/o? Your help is appreciated.

  See you soon,.

  Chad King

  VCP-410. Server +.

  Twitter: http://twitter.com/cwjking

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful

  You're right, it comes by I/O latency. This means that an important part of your IOs have a greater than 100 milliseconds latency, it is high enough to be honest and I'm not surprised if you would notice general slowness. I wonder if you have for example checked if your disks are aligned or not? This could contribute to this level of latency. I also wonder how many links, you must return to your file server?

  Another thing worth investigating is the use of the processors of the spin.

  Duncan

  VMware communities user moderator | VCDX

  -