Windows TCP Settings - Follow up - Help with server communication


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Travis
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Message 1351418 - Posted: 28 Mar 2013, 8:23:58 UTC

Oh thank you! Download speeds are a blazing 10 Kbps. Instead of 2 Kbps and then the drop off of a very high cliff.

__W__
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Message 1351509 - Posted: 28 Mar 2013, 15:23:51 UTC

Here is a little addition to the TcpIP-Patch for XP and Server 2003 user.

When you get some errors in the eventviewer (system) like
"EventID 4226: TCP/IP hat das Sicherheitslimit erreicht, ..." or
"EventID 4226: TCP/IP has reached the security limit, ...
first ad a registry DWORD entry at
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
with the name
TcpNumConnections
and the value
hex 0x00fffffe or dec 16777214
second install the patch from this site
http://www.lvllord.de/?lang=de&url=downloads#4226patch

This two things will reverse the changes MS has made in SP2 to limit the distribution of maleware(worms) through limiting the TcpIP connections.

__W__



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Profile Mike Bunce
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Message 1351584 - Posted: 28 Mar 2013, 19:33:07 UTC - in response to Message 1349053.

Fantastic. Thank you - it's cured all my download problems at a stroke. I have just downladed 4 days of cache in less than 30 mins with no timeouts or stalls.

Win XP Pro with 4 cores.

Mike Bunce
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DrFoo
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Message 1352426 - Posted: 31 Mar 2013, 11:57:06 UTC

Works like a charm. I've often wondered why my Linux desktop never had the retry issue like my Win7 box does on the same network. I just chalked it up to Linux having a superior network infrastructure (esp the TCP stack), or possibly the fact that the Linux machine has a live IP (no external firewall). The days are long past when I'd run a Windows box that way.

I had no idea MS had the timestamps off by default. And that seems like something I really should have known before now...

Kudos all around!
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mikeej42
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Message 1352573 - Posted: 31 Mar 2013, 21:29:53 UTC - in response to Message 1352426.
Last modified: 31 Mar 2013, 21:43:48 UTC

This really helped all my nodes running BOINC v7.0.X.
I went from over 2000 AP tasks trying to download across 150 machines to less than 75 active transfers. I have stopped the program I was running to keep retrying the transfers and now all of the downloads are completing on their own.

I have to believe that not having so many TCP connections aborting would take some load off the download server(s). I hope someone is able to create a sticky note for this because all machines running MSFT Windows OS variants should really apply this one.
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WezH
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Message 1354361 - Posted: 7 Apr 2013, 10:22:52 UTC

Has anyone tried disabling TCP fix after relocation of servers?

KB7RZF
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Message 1354451 - Posted: 7 Apr 2013, 17:53:20 UTC - in response to Message 1354361.

Has anyone tried disabling TCP fix after relocation of servers?

I have 2 Window's computers that I did not do the fix on, and they are just fine, one is XP, the other is Vista. Downloads fly, uploads cruise right through, and report just fine. No errors.
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Profile CLYDEProject donor
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Message 1354472 - Posted: 7 Apr 2013, 19:23:50 UTC - in response to Message 1354361.
Last modified: 7 Apr 2013, 19:25:05 UTC

Has anyone tried disabling TCP fix after relocation of servers?

Yes... I disabled the TCP fix after the relocation of the servers.

Downloads are now extremely fast, so maybe there is no need for this "fix".

Running Win7 on all computers.
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Message 1354475 - Posted: 7 Apr 2013, 19:39:21 UTC - in response to Message 1354361.
Last modified: 7 Apr 2013, 19:41:01 UTC

Has anyone tried disabling TCP fix after relocation of servers?

There's no need to do it, the "fix" just makes Windows use features, which Linux is using by default. Also it does not only help with connection to SETI servers, but all overloaded servers/connections. For me for example it also helped in case of Rosetta, where I was also getting HTTP errors every now and than, depending on the load on their servers. And it disabled backoffs on my BOINC 6.12.34 machine, however that is possible, so no, that will stay here as it is.
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Profile Bernie Vine
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Message 1354480 - Posted: 7 Apr 2013, 20:18:55 UTC

No it isn't a "fix" it is the way it is supposed to be. MS decided to "break" it, no one can say why.
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Message boards : Number crunching : Windows TCP Settings - Follow up - Help with server communication

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