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# _generals
Slackbot
06/23/2021, 1:45 PMThis message was deleted.
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Nick Panaccio
06/23/2021, 2:02 PMIf I had to guess, this sounds like it's up @Leee Jeffries alley.
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Leee Jeffries
06/23/2021, 2:21 PMFor what sort of workload? What's the reason for the ask? Most of the tweaks I am familiar with are based around SMB tweaks, mostly related to timings and connection limits but it depends on the workload.
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James Rankin
06/23/2021, 2:33 PMJust trying to improve the file server performance in my lab which is hosting profile VHDs
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Leee Jeffries
06/23/2021, 2:35 PMYour lab is all on one machine right? So plenty of bandwidth?
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James Rankin
06/23/2021, 2:35 PMYep
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Leee Jeffries
06/23/2021, 2:36 PMWhat are you trying to increase? Responsiveness or bandwidth, or just generally everything?
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James Rankin
06/23/2021, 2:37 PMLogon speed. The profile mounts pretty rapidly but then there's a drag as it seems to expand everything out, so wondering if improving the file server response might help things
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Leee Jeffries
06/23/2021, 2:43 PMSchool run chap, will come back to you.
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James Rankin
06/23/2021, 2:51 PMNo rush mate. Doing a few tweaks I've found on t'intertubes now
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Leee Jeffries
06/23/2021, 3:39 PMIn the main, things are pretty well balanced. In 2008R2 there were a lot of things to look at, not so much now.
Leee Jeffries
06/23/2021, 3:39 PMServer:
Higher concurrent limit to allow for higher bandwidth transfer
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\Smb2CreditsMax = 12288
All more I/O to queue in the storage subsystem - 2 additional threads
HKLM\System\CurrentControlSet\Control\Session Manager\Executive\AdditionalCriticalWorkerThreads = 20
Double the standard asynchronous commands
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\AsynchronousCredits = 1024
Allows more threads per I/O queue
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\MaxThreadsPerQueue = 40
Improves client latency
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\TreatHostAsStableStorage = 1
Client:
HKLM\system\CurrentControlSet\Services\lanmanworkstation\parameters\DisableBandwidthThrottling = 1
Leee Jeffries
06/23/2021, 3:40 PMNext step would be networking tweaks.
Leee Jeffries
06/23/2021, 3:44 PMI'd be interested to have a look to see where your delay is.
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James Rankin
06/23/2021, 3:45 PMI've managed to shave a few seconds off by tweaking some Registry entries for the Server service
James Rankin
06/23/2021, 3:45 PMPretty much along same lines as you just posted 😀
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Leee Jeffries
06/23/2021, 3:47 PMThose tweaks I put in for SMB usually allow file services to be more resilient and handle more connections effectively. I feel a blog article brewing 😉
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James Rankin
06/23/2021, 3:48 PMThat would be good mate, particularly if it was aimed at things like VHD storage on file servers
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James Rankin
06/23/2021, 3:54 PMAre those decimal values you've put in for the DWORD values, yeah?
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Leee Jeffries
06/23/2021, 4:01 PMYes chap, I should have stated that.
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James Rankin
06/23/2021, 4:21 PMSeems to have strimmed an extra 0.4 seconds, by putting in the bits I hadn't already
James Rankin
06/23/2021, 4:21 PMIt all counts
James Rankin
06/23/2021, 4:22 PMProbably good enough for my upcoming blog to say "tweaking your file shares/servers is vital as evidenced here. Please refer to Leee's detailed blog at xxxxxxxx for more details" 😉
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Leee Jeffries
06/23/2021, 5:13 PMHa ha, I'll try and put something together ;-)
Leee Jeffries
06/23/2021, 5:13 PMTime is short right now
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