In the Citrix world, turning off short file name creation breaks a LOT of things. At one time that was a recommendation from Citrix Consulting until support got flooded with calls.
Webster -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Kurt Buff Sent: Thursday, May 12, 2016 6:23 PM To: ntsysadm <[email protected]> Subject: Re: [NTSysADM] RE: Windows 2008 R2 server Generally, any directory with more than 10,000 files will be slow to browse or manipulate. Turn off short file name creation. See this article for some more details https://technet.microsoft.com/en-us/library/cc781134.aspx The article mention 300k files, but I've consistently run into problems with as few as 10k. This article is old, but still mostly good: http://www.windowsdevcenter.com/pub/a/windows/2005/02/08/NTFS_Hacks.html On Thu, May 12, 2016 at 11:33 AM, Scott Schneider <[email protected]> wrote: > Thanks for all the suggestions. > > I disabled RSS and Chimney offload, it made no difference. It is a 4 > port Qlogic (Broadcom) 1 GB card in the server. I updated the drivers > to latest on Dell’s site. When I put a second network card in the > backup server and put it on a separate closed switch (only the 2 > servers attached to the switch), I get the same slow throughput. > > The folder I am using for the test has 31 GB, 13694 folders and 517798 > files. It is consistently slow. A folder that copies quickly has 18 > GB, > 31768 files and 795 folders. > > I see there is a firmware update for the Qlogic card. I may be able to > try that after hours. > > > > From: [email protected] > [mailto:[email protected]] > On Behalf Of Rene de Haas > Sent: Thursday, May 12, 2016 1:47 PM > To: [email protected] > Subject: Re: [NTSysADM] RE: Windows 2008 R2 server > > > > Yes, I read about those as well, however since it's only certain > folders my guess is it's something else. > > Does it matter at what time you do the copy? Any file in that folder? > To which server? > > > > On Thu, May 12, 2016 at 6:31 PM, Kennedy, Jim > <[email protected]> > wrote: > > Check the nic settings. Disable RSS and Chimney offload. > > > > https://support.microsoft.com/en-us/kb/951037 > > > > > > From: [email protected] > [mailto:[email protected]] > On Behalf Of Scott Schneider > Sent: Thursday, May 12, 2016 12:07 PM > To: [email protected] > Subject: [NTSysADM] Windows 2008 R2 server > > > > Has anyone ever run across a really poor performance copying specific > folders from 2008 R2? We have a 1 GB backbone with HP switches. I did > my test copying to a windows 2012 R2 fully patched server (which is > the same Dell backup server using Arcserve). Both servers are fully > patched. The production server is a file server, and also an app > server, using apache and a canned Oracle database. Max connections are > 50 endpoints. I noticed the performance hit running our nightly > backups. Overall throughput crawled to around 1 GB per minute, it used > to run at about 3 GB per minute. I set up a private network for > copying/backup and the speed didn’t improve. I then experimented with > trying individual folder copies. That is when I noticed some folders > would copy at 80 to 100 MB per second, while others would copy at 7 to 8 MB > per second. > > A second almost identical server Dell 2008 R2 server with the Oracle > database consistently gets 3+ GB throughput for the nightly backup. > It doesn’t exhibit the slow throughput. No other servers in our > environment experience the slow throughput. > > > > Strangely the issue only appears with copying specific folders. Any > ideas, I’m stumped….. > > > > Thanks > > > > Scott Schneider > > > > > >
