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Mar
28
comment setsockopt EOPNOTSUPP (Operation not supported)
@brant: The higher CPU usage is basically meaningless since you're not under significant load -- you can't snooze efficiently. (And likely your older CPU had faster cores. What CPU was it?). The latency almost certainly is about network distance, not server performance. (20ms would just mean 10ms more each way -- a datacenter 150 fiber miles further away or so.)
Mar
28
comment setsockopt EOPNOTSUPP (Operation not supported)
Why would anyone try to solve this error? What purpose would QoS serve on a local connection?
Mar
28
comment map domain to subdomain
He will, however, also have to tell you that he's using that domain and you'll have to configure that in your server. Otherwise, when you get requests for host "markshop.com", you'll have no way to know you should serve the web pages for "markshop.shop.com".
Mar
28
comment setsockopt EOPNOTSUPP (Operation not supported)
This is normal behavior -- QoS isn't supported on local connections. (You say it's "over and over" but if you look, it's actually once per connection, the minimum needed to determine that QoS is not supported on that connection.) If there are any signals that point to a problem, you haven't told anyone what they are. We can't diagnose a problem if you don't even tell us a single symptom.
Mar
28
comment Private IP getting routed over Internet
@WernerCD: Actually, routes that don't exist on your network typically should go to your ISP. If you want to stop specific routes, you need to configure the firewall specifically. Blocking outbound traffic to private IPs is a common firewall configuration -- one that yours, apparently, doesn't have.
Mar
27
comment Private IP getting routed over Internet
Likely, to avoid accidentally sending such traffic to any of their Internet peers, Comcast injects a route that steers the traffic to a particular place. Routing is much more efficient than filtering. It's Comcast's network, they are free to use private IPs however they like. You sent the traffic to them.
Mar
27
answered setsockopt EOPNOTSUPP (Operation not supported)
Mar
27
comment Private IP getting routed over Internet
There is really no such thing as "an Internet server". There are just your servers and Comcast's servers. Your router forwarded the traffic to Comcast. If that's not what you wanted, change the configuration. Comcast is free to do whatever they want with the traffic.
Mar
27
comment Why is the port listed only in the specific format of netstat?
That's what netstat does. By default, it tries to show human-readable ports (unless you specify -n). When it succeeds, the port number does not appear in the output.
Mar
26
answered Requesting better explanation for expires headers
Mar
26
comment What is the correct response for a DNS server when a domain does not exist?
The .mil nameservers are strange and don't seem to like returning authoritative NXDOMAIN responses. If you try a nonsense .com address (or a nonsense TLD like foo.z9pp), you should get something other than a timeout.
Mar
25
comment Dropping Cached Memory on FreeBSD
It's not like if you use half as much memory today you can use twice as much tomorrow. Any memory you didn't use is opportunity forever wasted. Plus, it's wasted effort to make the memory free only for the system to have to expend effort to make it used again. Simply keeping it used (switching directly from one use to another) is much more efficient.
Mar
24
comment Security when SSH private keys are lost
@SvenW: After regenerating the public key, you can just run a script to search all machines lists of authorized keys for that public key. (Essentially a grep on the various ssh directories for a sequence of, say, 12 characters taken from it.) The question asks, "In other words, How do I recall, the public key associated with this Private key." and the first step in doing that is to figure out what that public key is so you can search for it.
Mar
23
comment Git fails to push with error 'out of memory'
Is this a 32-bit or 64-bit build of git? This is usually caused by some very restrictive limit on virtual memory imposed by a bone-headed administrator who doesn't realize that virtual memory is not a scarce resource and should not be aggressively limited. Can you paste your ulimit -a output?
Mar
23
revised Traffic shaping with tc doesn't work for high delay and bandwidth
added 211 characters in body
Mar
23
answered Traffic shaping with tc doesn't work for high delay and bandwidth
Mar
23
comment Connectivity issues with dual NIC machine in EC2
You kind of forgot to describe the actual problem. What exactly doesn't work and what happens when you try to do it?
Mar
22
revised MegaRaid damaging disk by set a drive to “Offline”?
added 252 characters in body
Mar
22
answered MegaRaid damaging disk by set a drive to “Offline”?
Mar
20
comment How to measure UDP socket buffer loss on Windows Server 2008 R2?
There may be a way to measure some types of loss, but in general, there's no way to know what you've lost.