wetiorew.blogg.se - Receive side scaling enable or disable

RECEIVE SIDE SCALING ENABLE OR DISABLE DRIVERS
RECEIVE SIDE SCALING ENABLE OR DISABLE DRIVER
RECEIVE SIDE SCALING ENABLE OR DISABLE SOFTWARE
RECEIVE SIDE SCALING ENABLE OR DISABLE FREE

When flow control is enabled, the slider background displays blue.

In the Flow Control section, enable or disable flow control by clicking the slider.

The pane displays detailed information about the port. A port that is not in use shows as AVAILABLE.

The PORT STATUS pane displays on the right or the bottom of the home page, depending on the size of your browser page.Ī port that is in use shows as UP.

Valid values: 0 - disabled: 1 - enabled: Default value: 1: AQCFGNUMRSSQUEUESDEF-Number of queues for Receive Side Scaling: Valid Range: 0 - 8 (up to AQCFG.

Enter the IP address that is assigned to the switch. Enable/disable Receive Side Scaling: This feature allows the adapter to distribute receive processing: across multiple CPU-cores and to prevent from overloading a single CPU core.

Open a web browser from a computer that is connected to the same network as the switch or is connected to the switch directly through an Ethernet cable.

By default, flow control is disabled for all ports. You can enable or disable flow control for an individual port. But sometimes when this is not the case problems similar to what I bumbed into might occur.IEEE 802.3x flow control works by pausing a port if the port becomes oversubscribed (that is, the port receives more traffic than it can process) and dropping all traffic for small bursts of time until the port is no longer congested.

RECEIVE SIDE SCALING ENABLE OR DISABLE SOFTWARE

Generally speaking these are something you would like to see happen and as I also said, there’s usually no issues as hardware and software these days is designed to take advantage of these features. RSS on the other hand is used for spreading the CPU load evenly between multiple CPU cores. If you’re not familiar with the TCP Chimney and Receive Side Scaling features, the chimney one is used for moving the CPU load of dealing with network I/O requests for network adapters, thus freeing your CPUs to do something else.

netsh int tcp set global chimney=disabled.

The commands used to disable Chimney offload and Receive Side Scaling are: If there are, we’ll be probably attempting to enable these again at some point to get the benefits of these features.

RECEIVE SIDE SCALING ENABLE OR DISABLE DRIVER

I told the customer to check with the hardware vendor if there were any driver updates for their NIC’s or any other updates/fixes for the issue.

I was quite surprised actually that this had turned out to be the culprit, as I really haven’t had any problems with Chimney Offloading for many years. I quickly disabled TCP Chimney Offloading as well as the Receive Side Scaling and true enough the customer called back soon to inform me that whatever I had done, it had fixed the issue. I then confirmed the status of both TCP Chimney Offload and Receive Side Scaling features being enabled with netsh command: So I typed in a next command:Īnd true enough, there were connections that were in Offloaded state. Then a thought hit me, I had seen something similar previously, but that was a while back. There seemed to be a number of them and I confirmed from SQL Server that there were lot of clients connected to server. I opened a Command Prompt and used the netstat to see if there were connections: I also knew there were no changes to made the network topology itself, so it pretty much had to be something on the active node that now reacted to increased user load.

RECEIVE SIDE SCALING ENABLE OR DISABLE FREE

They were error free and Network Interface counters on Performance Counters were also looking quite good also while the network traffic was not really all that heavy. She then told me that she’d like to hear a song about a wooden horse and then one about a cat, which we then did.īack at the office I logged into the production box and quickly looked through the relevant (Windows, SQL Server, Cluster) logs.

RECEIVE SIDE SCALING ENABLE OR DISABLE DRIVERS

I looked to my 2 year daughter through the mirror and told her that for this exact reason you shoud always keep your drivers and software up to date on your servers and before taking system to production, it should be thoroughly tested. I told him I’d look right into it as soon as I’d get to the office. He also ran ping against the cluster node running SQL Server instance and there were packets being dropped every now and then, while the passive node had no such problems. There were random errors saying that database could not be opened and so forth. Soon I heard that while everything seemed to be ok last night come the morning and more users, people were now having trouble connecting to database with the client software. I did recognize the number being that of my customer, so I answered. I was driving on a highway, taking my daughter to daycare when the phone rang.

I was migrating some old databases (I’ll write some more about this later) couple nights back to new database server and while that went mostly alright, things were not looking so good in the morning.