Tag Archives: load

Microsoft, SBS 2008, Service Pack 2, Service Pack 2, Service Pack 2, Service Pack 2, Small Business Server 2008, Windows, Windows Server 2008, Windows Vista

srv.sys – Pre Service Pack 3 Revision History for Windows Server 2008 SP2, Windows Vista SP2 and Windows Small Business Server 2008 (SBS 2008)

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srv.sys – Pre Service Pack 3 Revision History for Windows Server 2008 SP2, Windows Vista SP2 and Windows Small Business Server 2008 (SBS 2008)

18-Feb-2011 – 6.0.6002.22592 – srv.sys – x86/x64 – http://support.microsoft.com/kb/2508429 – MS11-020: Vulnerabilities in SMB Server could allow remote code execution: April 12, 2011

17-Jan-2011 – 6.0.6002.22571 – srv.sys – x86/x64 – http://support.microsoft.com/kb/2492806 – A Windows Vista-based, Windows Server 2008-based, Windows 7-based or Windows Server 2008 R2-based computer that shares some files and some folders may not respond to file share requests

06-Sep-2010 – 6.0.6002.22481 – srv.sys – x86/x64 – http://support.microsoft.com/kb/2345886 – Description of the update that implements Extended Protection for Authentication in the Server service

18-Jun-2010 – 6.0.6002.22427 – srv.sys – x86/x64 – http://support.microsoft.com/kb/982214 – MS10-054: Vulnerabilities in SMB Server could allow remote code execution

22-Mar-2010 – 6.0.6002.22369 – srv.sys – x86/x64 – http://support.microsoft.com/kb/974103 – You cannot access the shared files or folders that are hosted on a Windows Server 2008-based or Vista-based computer if the path contains a junction point

02-Mar-2010 – 6.0.6002.22352 – srv.sys – x86/x64 – http://support.microsoft.com/kb/980135 – Stop error message if under heavy load in Windows Server 2008, in Windows Vista, in Windows 7 and in Windows Server 2008 R2: “Stop error code 0x00000050 (PAGE_FAULT_IN_NONPAGED_AREA)”

12-Feb-2010 – 6.0.6002.22337 – srv.sys – x86/x64 – http://support.microsoft.com/kb/951418 – Stop error in Windows Vista, Windows 7, Windows Server 2008, or Windows Server 2008 R2: “0x00000050 PAGE_FAULT_IN_NONPAGED_AREA”

11-Dec-2009 – 6.0.6002.22286 – srv.sys – x86/x64 – http://support.microsoft.com/kb/971468 – MS10-012: Vulnerabilities in SMB Server could allow remote code execution

Microsoft, SBS 2011, Service Pack 1, Service Pack 1, Service Pack 1, Small Business Server 2011, Windows, Windows Server 2008 R2

Dns.exe – Pre Service Pack 2 Revision History for Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

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Dns.exe – Pre Service Pack 2 Revision History for Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

02-Nov-2013 – 6.1.7601.22500 – Dns.exe – x64 – http://support.microsoft.com/kb/2905363 – Windows DNS server incorrectly parses client computer records

08-Aug-2013 – 6.1.7601.22416 – Dns.exe – x64 – http://support.microsoft.com/kb/2875350 – DNS Server service cannot bind to port 53 in Windows Server 2008 R2 SP1

09-May-2013 – 6.1.7601.22320 – Dns.exe – x64 – http://support.microsoft.com/kb/2847677 – DNS service freezes in Windows Server 2008 R2 SP1

01-May-2013 – 6.1.7601.22313 – Dns.exe – x64 – http://support.microsoft.com/kb/2845145 – A memory leak occurs in the DNS server service after you enable recursion on a server that is running Windows Server 2008 R2

06-Feb-2013 – 6.1.7601.22243 – Dns.exe – x64 – http://support.microsoft.com/kb/2809959 – DNS Server service does not start on a computer that is running Windows Server 2008 R2

07-Jan-2013 – 6.1.7601.22211 – Dns.exe – x64 – http://support.microsoft.com/kb/2550719 – “Name Error 3” error message when you send a query to an EDNS-enabled forwarding DNS server, and the query is resolved by using WINS forward lookup in Windows Server 2008 R2

06-Sep-2012 – 6.1.7601.22108 – Dns.exe – x64 – http://support.microsoft.com/kb/2739005 – DNS response packet is marked as invalid after you enable the EDNS probes feature on a DNS server that is running Windows Server 2008 R2

26-Jul-2012 – 6.1.7601.22071 – Dns.exe – x64 – http://support.microsoft.com/kb/2738597 – TTL values are different when you send two queries for the same SOA record in Windows Server 2008 R2

16-Jun-2012 – 6.1.7601.22024 – Dns.exe – x64 – http://support.microsoft.com/kb/2724183 – Parent DNS servers cannot resolve the names of records from a child domain after you configure DNSSEC for an Active Directory-integrated DNS zone in Windows Server 2008 R2

12-May-2012 – 6.1.7601.21993 – Dns.exe – x64 – http://support.microsoft.com/kb/2712740 – TTL values are different when you send two queries for the same SOA record in Windows Server 2008 R2

27-Dec-2011 – 6.1.7601.21885 – Dns.exe – x64 – http://support.microsoft.com/kb/2647170 – MS12-017: Vulnerability in DNS Server could allow denial of service: March 13, 2012

17-Dec-2011 – 6.1.7601.21879 – Dns.exe – x64 – http://support.microsoft.com/kb/2655960 – DNS server stops responding to DNS queries from client computers in in Windows Server 2003, in Windows Server 2008 or in Windows Server 2008 R2

28-Nov-2011 – 6.1.7601.21867 – Dns.exe – x64 – http://support.microsoft.com/kb/2648326 – “Server Failure” error message and DNS name resolution of external websites fails on a DNS server that is running Windows Server 2008 R2

30-Sep-2011 – 6.1.7601.21829 – Dns.exe – x64 – http://support.microsoft.com/kb/2586946 – You cannot update the name server records for a domain that has a “.no” top-level country code to use Windows Server 2008 R2-based DNS name servers

09-Sep-2011 – 6.1.7601.21814 – Dns.exe – x64 – http://support.microsoft.com/kb/2616861 – DNS Server service does not respond to a CNAME query in the GlobalNames zone correctly in Windows Server 2008 R2

08-Sep-2011 – 6.1.7601.21813 – Dns.exe – x64 – http://support.microsoft.com/kb/2616776 – DNS Server service does not use root hints to resolve external names in Windows Server 2008 R2

21-Jun-2011 – 6.1.7601.21754 – Dns.exe – x64 – http://support.microsoft.com/kb/2562485 – MS11-058: Vulnerabilities in DNS Server could allow remote code execution: August 9, 2011

20-May-2011 – 6.1.7601.21731 – Dns.exe – x64 – http://support.microsoft.com/kb/2408181 – AAAA record of a Windows Server 2008 or of a Windows Server 2008 R2 domain controller is deleted automatically if the domain controller uses an Active Directory–integrated zone and has a Microsoft 6to4 adapter

19-May-2011 – 6.1.7601.21730 – Dns.exe – x64 – http://support.microsoft.com/kb/2548145 – The size of the Active Directory increases rapidly on a Windows Server 2003-based or Windows Server 2008 R2-based domain controller that hosts the DNS Server role

14-May-2011 – 6.1.7601.21728 – Dns.exe – x64 – http://support.microsoft.com/kb/2549656 – DNS Server service randomly cannot resolve external names and returns a “Server Failure” error if IPv6 is disabled in Windows Server 2008 R2

11-May-2011 – 6.1.7601.21725 – Dns.exe – x64 – http://support.microsoft.com/kb/2550719 – “Name Error 3” error message when you send a query to an EDNS-enabled forwarding DNS server, and the query is resolved by using WINS forward lookup in Windows Server 2008 R2

23-Mar-2011 – 6.1.7601.21690 – Dns.exe – x64 – http://support.microsoft.com/kb/983534 – Performance of the DNS Server service keeps decreasing under a heavy load situation in Windows Server 2008 R2

22-Mar-2011 – 6.1.7601.21689 – Dns.exe – x64 – http://support.microsoft.com/kb/2508835 – DNS Server service does not resolve some external DNS names after it works for a while in Windows Server 2008 R2

13-Jan-2011 – 6.1.7601.21640 – Dns.exe – x64 – http://support.microsoft.com/kb/2495375 – DNS does not respond to a request for a SPF (TXT) DNS record correctly in Windows Server 2008 R2 if the record is larger than 512 bytes

Microsoft, SBS 2011, Service Pack 1, Service Pack 1, Service Pack 1, Small Business Server 2011, Windows, Windows Server 2008 R2

Dhcpssvc.dll – Pre Service Pack 2 Revision History for Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

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Dhcpssvc.dll – Pre Service Pack 2 Revision History for Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

01-Dec-2012 – 6.1.7601.22178 – Dhcpssvc.dll – x64 – http://support.microsoft.com/kb/2789970 – DHCP service freezes when a high rate of DHCP DISCOVER packets is sent to a DHCP server that is running Windows Server 2008 R2

01-Dec-2012 – 6.1.7601.18016 – Dhcpssvc.dll – x64 – http://support.microsoft.com/kb/2789970 – DHCP service freezes when a high rate of DHCP DISCOVER packets is sent to a DHCP server that is running Windows Server 2008 R2

08-Oct-2012 – 6.1.7601.22128 – Dhcpssvc.dll – x64 – http://support.microsoft.com/kb/2761544 – An update is available for the DHCP server role in Windows Server 2008 R2

19-Oct-2011 – 6.1.7601.21842 – Dhcpssvc.dll – x64 – http://support.microsoft.com/kb/2632816 – A Windows Server 2008 R2-based or Windows Server 2008-based DHCP server cannot lease IP addresses if the server cannot reach any RWDCs in an Active Directory domain environment

14-Sep-2011 – 6.1.7601.21818 – Dhcpssvc.dll – x64 – http://support.microsoft.com/kb/2616864 – DHCP Server service crashes randomly in Windows Server 2008 or in Windows Server 2008 R2

16-Aug-2011 – 6.1.7601.21791 – Dhcpssvc.dll – x64 – http://support.microsoft.com/kb/2598526 – Client computers do not obtain an IP address when they request a DHCP lease from a Windows Server 2008 R2-based DHCP server

14-May-2011 – 6.1.7601.21728 – Dhcpssvc.dll – x64 – http://support.microsoft.com/kb/2479424 – A Windows Server 2008 or Windows Server 2008 R2 NAP-enabled DHCP server incorrectly issues fully accessible IP addresses to Windows XP Service Pack 3 clients that are not NAP compliant

17-Mar-2011 – 6.1.7601.21685 – Dhcpssvc.dll – x64 – http://support.microsoft.com/kb/2523974 – The DHCP Server service stops responding during the shutdown process when the DHCP Server service is running under a heavy load in Windows Server 2008 R2

Fujitsu, HP, Internet Explorer, Internet Explorer 8, Internet Explorer 9, Microsoft, ML110 G5, ML350 G5, ML350 G6, Office, Outlook 2010, Primergy, ProLiant, Uncategorized, Windows, Windows 7, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP

Remote Desktop Sessions Pause Or Exhibit Unresponsiveness – Lag Whilst Typing And Session Will Not Accept Mouse Inputs

Remote Desktop Services can be extremely useful, allowing users to access a terminal server or their company desktop computer from another location.  One very common complaint with RDP sessions is screen refresh delays and a delay when typing or trying to click on items using the mouse cursor.  It will appear to most that the session has become unresponsive for a period of 5-20 seconds, after this delay the session will return to normal for a period of several minutes before once again becoming unresponsive.  You may find that this issue becomes more apparent as more users connect to the specific terminal server in question and if all these users utilise several applications (i.e. Outlook, Word and Excel) together.

Causes for poor user experience when connected via RDP are varied but one of the most common is resource exhaustion or contention.  This in turn causes a delay in processing that appears as a pause or unresponsiveness.

Check that your computer or terminal server has sufficient Memory to cope with the current load.

The next thing to verify by using performance monitor is that the PhysicalDisk\% Idle Time is consistently high, that’s correct this should be 90-100% when the server is not very busy.

It is worth running performance monitor using the PhysicalDisk\% Idle Time counter whilst you are seeing the slowdowns, this will help identify if your hard disk or controller are causing contention and in turn the pausing or unresponsiveness.

If you do find that the “%Idle Time” keeps going very low then it’s time to consider some of the options below to help resolve the issue

  • Install a second drive or mirror set, move the Windows Page File to this second disk/array to reduce the load on the drive/array holding your operating system
  • Install additional memory into the computer or server, this will reduce paging to disk and will generally improve overall system performance
  • Migrate to or upgrade your existing RAID controller to a unit that had a Battery Backed Cache (Fast) or Flash Backed Cache (Newer – Faster) to significantly improve performance and alleviate the system
  • Migrate to faster hard disk drives, 7200, 10,000 or 15,000 RPM drives are amongst the fastest.  The SATA interface is slower than the SAS interface but is cheaper.  Try to invest in the fastest drives that you can to future proof the system and avoid future performance issues if you have to scale for more users.
  • Ensure that you have at least 20-25% free disk space on all partitions/drives
  • Defragment all drives on a regular basis to optimise read and write operations
  • A cheap solution for improving disk performance may be to turn on the Hard Disk Cache using “Device Manager” or in the event that you are using a RAID controller without a battery backed Cache module you will need to open the RAID Array Management Software and then enable Disk Cache within the management software as this feature will not be available within “Device Manager” in this instance.  Please note that this does have some risks and should be used with caution, you may loose data in the event of a sudden/unexpected loss of power to the system.  Consider using this option with a UPS and redundant power supplies to reduce the risk of power loss to the system.  As always ensure you have a reliable backup that is carried out at regular intervals.

Example – HP RAID Array Configuration Utility:

Example – Windows Device Manager: