Re: [Samba] Profile loading/saving on gigabit network only runs atfast ethernet speeds! Help!
I Do think the local hard disk speed is cause *some* limitation, but since I can upload & download the same and other files and directories to the server at 4x the speed, I do not think that is the main limitation. I am still perplexed by this issue, why is it that any sort of normal upload/download data transfer from server to client or vice-versa via network shares works at speeds of roughly 400,000 kb/s when a profile being copied back and forth at login/logout runs at a much slower 50,000 kb/s? Iv'e just been frustrated by this issue and I would really like to get to the bottom of this, thank you all for your patience and continued support. Jonathan On Thu, Oct 16, 2008 at 9:47 AM, Andrew Masterson < [EMAIL PROTECTED]> wrote: > It might be due to the way you are testing - local hard drives usually > can't make use of gigabit networks for downloading because their write > speeds are too slow. > > -Andrew > > > --------- > > On Behalf Of Jonathan Bougher > > Sent: Wednesday, October 15, 2008 4:08 PM > > To: Adam Williams > > Cc: samba@lists.samba.org > > Subject: Re: [Samba] Profile loading/saving on gigabit network only > runs > > atfast ethernet speeds! Help! > > > > Ok that idea sounds golden, I will try it out the first chance I get. > This > > is a big improvement over the way it is now, it's a little harder on > > users, > > but not much. I thank you very much! > > > > However, just because I am a curious kind of guy, I do not yet know > > *why*such a slowdown occurs when saving a profile vs. just > > uploading/downloading > > to a share. Is this a result of the old profile having to be > overwritten? > > I > > know I need to read up on this a little more but has anyone had direct > > experience with this type of issue, or any ways to speed up that > service > > in > > particular (or what could be slowing it down). > > > > Thank you all so much, you have already helped tremendously - please > help > > me > > out just a little more to understand this better. :) Thanks! > > > > On Tue, Oct 14, 2008 at 2:39 PM, Adam Williams > > <[EMAIL PROTECTED]>wrote: > > > > > page 211 of samba 3 by example.pdf has instructions on how to > redirect > > > folders using registry changes. you can easily redirect my > documents by > > > right clicking on it and changing the target. i don't save files to > my > > > desktop because that just results in a cluttered desktop and large > > roaming > > > profiles. No I don't think VMWare will run much slower than it is > now. > > In > > > testing on my Poweredge servers, desktop PCs, etc, it seems in my > > experience > > > that hard drives max out at reads/writes of 25 megabytes a second, > and > > even > > > 100megabit transfers about 12 megabytes a second on a switched > network. > > I'd > > > probably try a test, take a user, redirect my documents to a folder > on > > the > > > server, put the VM in it, and run it, and see how it affects your > > > performance, you may not notice anything different. I ran Windows > XP > > and > > > Fedora 8 on Microsoft Virtual PC in a test environment on my 100 > megabit > > > notebook PC with the VMs stored on a shared drive on a file server > and I > > > didn't notice much of a difference as running an operating system > > locally. > > > > > > > > > Jonathan Bougher wrote: > > > > > >> The VM is being saved to the Desktop, within a folder (or multiple > > folders > > >> if the user puts it there) > > >> > > >> If I redirect My Docs, and the VM files are there - Then won't > VMware > > run > > >> much more slowly trying to access this stuff across the network > when > > the > > >> user wants to run the VM? Profile loading/saving would speed up, > but > > overall > > >> performance would be impacted negatively I think > > >> > > >> Thanks for the reply, I will look into it further - do you have any > > >> thoughts about what I stated above? > > >> > > >> > > -- > > To unsubscribe from this list go to the following URL and read the > > instructions: https://lists.samba.org/mailman/listinfo/samba > -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Profile loading/saving on gigabit network only runs at fast ethernet speeds! Help!
Ok that idea sounds golden, I will try it out the first chance I get. This is a big improvement over the way it is now, it's a little harder on users, but not much. I thank you very much! However, just because I am a curious kind of guy, I do not yet know *why*such a slowdown occurs when saving a profile vs. just uploading/downloading to a share. Is this a result of the old profile having to be overwritten? I know I need to read up on this a little more but has anyone had direct experience with this type of issue, or any ways to speed up that service in particular (or what could be slowing it down). Thank you all so much, you have already helped tremendously - please help me out just a little more to understand this better. :) Thanks! On Tue, Oct 14, 2008 at 2:39 PM, Adam Williams <[EMAIL PROTECTED]>wrote: > page 211 of samba 3 by example.pdf has instructions on how to redirect > folders using registry changes. you can easily redirect my documents by > right clicking on it and changing the target. i don't save files to my > desktop because that just results in a cluttered desktop and large roaming > profiles. No I don't think VMWare will run much slower than it is now. In > testing on my Poweredge servers, desktop PCs, etc, it seems in my experience > that hard drives max out at reads/writes of 25 megabytes a second, and even > 100megabit transfers about 12 megabytes a second on a switched network. I'd > probably try a test, take a user, redirect my documents to a folder on the > server, put the VM in it, and run it, and see how it affects your > performance, you may not notice anything different. I ran Windows XP and > Fedora 8 on Microsoft Virtual PC in a test environment on my 100 megabit > notebook PC with the VMs stored on a shared drive on a file server and I > didn't notice much of a difference as running an operating system locally. > > > Jonathan Bougher wrote: > >> The VM is being saved to the Desktop, within a folder (or multiple folders >> if the user puts it there) >> >> If I redirect My Docs, and the VM files are there - Then won't VMware run >> much more slowly trying to access this stuff across the network when the >> user wants to run the VM? Profile loading/saving would speed up, but overall >> performance would be impacted negatively I think >> >> Thanks for the reply, I will look into it further - do you have any >> thoughts about what I stated above? >> >> -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Profile loading/saving on gigabit network only runs at fast ethernet speeds! Help!
The VM is being saved to the Desktop, within a folder (or multiple folders if the user puts it there) If I redirect My Docs, and the VM files are there - Then won't VMware run much more slowly trying to access this stuff across the network when the user wants to run the VM? Profile loading/saving would speed up, but overall performance would be impacted negatively I think Thanks for the reply, I will look into it further - do you have any thoughts about what I stated above? On Tue, Oct 14, 2008 at 1:22 PM, Adam Williams <[EMAIL PROTECTED]>wrote: > where are you saving the VM at? My documents? you can redirect my > documents as well as most folders under c:\documents and settings\user > > > Jonathan Bougher wrote: > >> Hello everyone, >> >> I could really use some help trying to diagnose a tricky issue within the >> domain >> I have set up. >> >> I am using samba-3.0.28-1.el5_2.1 and openldap-2.3.27-8.el5_2.4 on a >> server >> running Centos 5.1. >> >> I have everything working properly within the domain, users can log in, >> netlogon >> scripts are run, their profile is loaded, etc. >> >> I have been extremely happy with this software and can't thank the makers >> enough >> - great work! >> >> The issue I am having is with the speed of profile loading/saving. This >> network >> is hosted on a Gigabit Lan - this is a classroom environment where >> students >> must >> save large files in their profile (virtual machines actually = ~3-4GB per >> profile & will grow...). >> >> I know the best option is to save the work elsewhere, like their mapped >> home >> directory, but it would be highly inconvenient to copy the VM back and >> forth >> every time they wanted to use it (although much faster than the >> logon/logoff >> speeds). >> >> Let me elaborate: I have done speed tests transferring files and >> directories >> directly to writable shares. I have monitored the network speeds with >> iptraf >> on >> the server while downloading/uploading a 1 GB or file or large directory >> on >> the >> relevant interface (there are 4 local interfaces) and these are my >> approximate >> results: >> >> DL from Samba Share: 300,000 - 400,000 kb/s >> UPL to Samba Share: 300,000 - 400,000 kb/s >> >> These speeds are GREAT! I was blown away! -- But then take a look at the >> speeds >> at which the network operates when loading/saving a user's profile while >> logging >> in/out: >> >> Profile Logoff: 50,000 kb/s (a ~3GB profile takes roughly 10 min to load) >> Profile Logon: Not Tested - but observed to take about 10 minutes >> >> So my dilemma is that, while the networking is functioning exceptionally >> well in >> all other areas, it just takes so long to login/logoff! The users need to >> have >> roaming profiles (they do switch machines sometimes) & I would like them >> to >> be >> able to store a lot of data inside their profile without speed becoming >> too >> much >> of an issue like it is now. >> >> I have messed around with a few tweaking options in the smb.conf file, but >> they >> have not helped so far. So, I just went back to using TCP_NODELAY. I have >> turned >> off oplocks as well. >> >> I am not sure how to proceed now and I am pretty much taking random stabs >> in >> the >> dark with this issue, any help would be GREATLY appreciated! >> >> Thank you all, >> >> Jonathan >> >> > -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Profile loading/saving on gigabit network only runs at fast ethernet speeds! Help!
Ouch - insane is not what I was going for, hahaha jk. I just hoped that the gigabit speeds would better support a larger profile. If I was getting the full DL/UL speeds for profile transfer it would not be such an issue because it would only take about a minute and a half. But I see your wisdom Charles because the profiles can definitely grow much larger and sooner or later I would be stuck once again...it's just those dang big VM files!!! Mike, The VM's are actually just the VM Files that VMware Server uses to load the Virtual OS. The students created their own VM's with Vmware Server and they need to use them periodically (they can screw them up, wehatever they want, it is a learning environment & then they can rebuild). The Desktops are running a locally installed WinXP Pro and use the Samba Server as PDC. The VM files themselves are the big problem here because they run about 3 GB's - and each student must have his/her own. I don't fully undertand you solution, but I did pick up on the fact that I could create a local directory on the client machines in which users could house their VMs. This would be a great Idea, but the only downside is that it would limit their mobility. I do not mind working around this issue in some way, and I really appreciate all the help so far! In a perfect world however, I would like to diagnose the issue with the speeds. Why is it that profile loading/saving is SO much slower than other data transfer? Mabey I am missing something as far as how profiles are copied/saved. Could someone clue me in and help me work out a way to speed it up, or else then I will take one of the other routes Thanks so much! Jonathan On Tue, Oct 14, 2008 at 11:56 AM, Mike Gallamore <[EMAIL PROTECTED]> wrote: > I think your right there. What type of OS/VM software are you using? Could > you have the OS + common app bits in a virtual disk that is on the local > machine and the user profile, user specific applications all in a seperate > virtual disk that they get from the samba server? That would probably trim > the amount of traffic hugely. > > Also since you have such a performance difference between the two options > maybe you'd be better off saving the VM image locally then using a tool like > a bash script/rsync whatever to copy the whole thing over once it is a > single or couple files. Here seperating the apps from the data will help too > because a big chunk might not need to be sent again as it wouldn't change, > but if it is only one file you might end up sending the whole thing because > someone made a little file. I'm thinking that the VM program might be > creating a bunch of little bursty traffic for some reason which would cause > the performance degradation. > > On Oct 14, 2008, at 5:46 PM, Charles Marcus wrote: > > On 10/14/2008, Jonathan Bougher ([EMAIL PROTECTED]) wrote: >> >>> Profile Logoff: 50,000 kb/s (a ~3GB profile takes roughly 10 min to load) >>> >> >> Using roaming profiles for profiles so large is - well - insane. >> >> You won't get much better performance... >> >> I'd look for another way (than using huge roaming profiles) to >> accomplish your goal. >> >> -- >> >> Best regards, >> >> Charles >> -- >> To unsubscribe from this list go to the following URL and read the >> instructions: https://lists.samba.org/mailman/listinfo/samba >> > > -- > To unsubscribe from this list go to the following URL and read the > instructions: https://lists.samba.org/mailman/listinfo/samba > -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Profile loading/saving on gigabit network only runs at fast ethernet speeds! Help!
Ouch - insane is not what I was going for, hahaha jk. I just hoped that the gigabit speeds would better support a larger profile. If I was getting the full DL/UL speeds for profile transfer it would not be such an issue because it would only take about a minute and a half. But I see your wisdom Charles because the profiles can definitely grow much larger and sooner or later I would be stuck once again...it's just those dang big VM files!!! Mike, The VM's are actually just the VM Files that VMware Server uses to load the Virtual OS. The students created their own VM's with Vmware Server and they need to use them periodically (they can screw them up, wehatever they want, it is a learning environment & then they can rebuild). The Desktops are running a locally installed WinXP Pro and use the Samba Server as PDC. The VM files themselves are the big problem here because they run about 3 GB's - and each student must have his/her own. I don't fully undertand you solution, but I did pick up on the fact that I could create a local directory on the client machines in which users could house their VMs. This would be a great Idea, but the only downside is that it would limit their mobility. I do not mind working around this issue in some way, and I really appreciate all the help so far! In a perfect world however, I would like to diagnose the issue with the speeds. Why is it that profile loading/saving is SO much slower than other data transfer? Mabey I am missing something as far as how profiles are copied/saved. Could someone clue me in and help me work out a way to speed it up, or else then I will take one of the other routes Thanks so much! Jonathan -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
[Samba] Profile loading/saving on gigabit network only runs at fast ethernet speeds! Help!
Hello everyone, I could really use some help trying to diagnose a tricky issue within the domain I have set up. I am using samba-3.0.28-1.el5_2.1 and openldap-2.3.27-8.el5_2.4 on a server running Centos 5.1. I have everything working properly within the domain, users can log in, netlogon scripts are run, their profile is loaded, etc. I have been extremely happy with this software and can't thank the makers enough - great work! The issue I am having is with the speed of profile loading/saving. This network is hosted on a Gigabit Lan - this is a classroom environment where students must save large files in their profile (virtual machines actually = ~3-4GB per profile & will grow...). I know the best option is to save the work elsewhere, like their mapped home directory, but it would be highly inconvenient to copy the VM back and forth every time they wanted to use it (although much faster than the logon/logoff speeds). Let me elaborate: I have done speed tests transferring files and directories directly to writable shares. I have monitored the network speeds with iptraf on the server while downloading/uploading a 1 GB or file or large directory on the relevant interface (there are 4 local interfaces) and these are my approximate results: DL from Samba Share: 300,000 - 400,000 kb/s UPL to Samba Share: 300,000 - 400,000 kb/s These speeds are GREAT! I was blown away! -- But then take a look at the speeds at which the network operates when loading/saving a user's profile while logging in/out: Profile Logoff: 50,000 kb/s (a ~3GB profile takes roughly 10 min to load) Profile Logon: Not Tested - but observed to take about 10 minutes So my dilemma is that, while the networking is functioning exceptionally well in all other areas, it just takes so long to login/logoff! The users need to have roaming profiles (they do switch machines sometimes) & I would like them to be able to store a lot of data inside their profile without speed becoming too much of an issue like it is now. I have messed around with a few tweaking options in the smb.conf file, but they have not helped so far. So, I just went back to using TCP_NODELAY. I have turned off oplocks as well. I am not sure how to proceed now and I am pretty much taking random stabs in the dark with this issue, any help would be GREATLY appreciated! Thank you all, Jonathan -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
