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I am trying to get bandwidth value of Wan interface in Open-Wrt router (WRT54GL) using
OID: 1.3.6.1.2.1.2.2.1.10.4
But I keep getting value around 4174517174
I was doing some calculations and it does not make any sense:
4174517174 / 8 / 1024 /1024 = 497 MB/s
Does this value contains more info like time or something or my OID is incorrect ?
I have got the answer. Its the whole traffic which has passed trow this interface. To get the bandwidth you need to get the difference between two past values...
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The Computer is designed to execute certain tasks exactly.
It is not able to make arbitrary tasks : So how can It generate random numbers?
Yes, you are right. Computers cannot generate Purely Random numbers. Therefore, they are called Pseudo Random. Most common technique used, today, to generate a random number is by reading the machine time in milliseconds and perform arithmetic operations on it to get a new number every time. You can read more about it here
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Here is what I see in MacOS Activity Monitor, note %CPU column.
First item (Xcode process) shows 122.4 value. Any idea what it represents? If it is 122.4% then percent of what exactly?
The %Cpu usually represents the % usage of a single core on your processor. If you have a quad-core, you have a total usage possibility of 400%.
Your first process in your list has 28 threads spread accross more than one core which are using more execution than a full single core.
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I have 10 ES Servers each one with 32Cores Cpu, 256G memory and 10Gb NIC. The ES cluster will face about 9000 times request(index or query) per second. Do you think this would be a problem, or any optimization I should do please.
It depends on the index structure, data amount and the queries you're doing. Hardware alone does not guarantee anything. I have seen clusters two times less powerful than yours which were capable to handle 10k/sec. However I can easily imagine queries and aggregations that will take some time to run on your cluster.
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why conky duplicates the display after every minute as the picture
This looks like a common issue with Conky and graphics. You can try enabling double buffering:
# Use double buffering (reduces flicker, may not work for everyone)
double_buffer yes
or fiddling around with the own_window, own_window_type, and own_window_transparent settings.
I solved the problem by own_window_type normal
in the file ~/.conky
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An application I cannot change is dropping some incoming UDP packets. I suspect that the receive buffer is overflowing. Is there a registry setting to make the default buffer larger than 8KB?
From this
To set the default size of the Windows use the following DWORD registry keys :
[HKEY_LOCAL_MACHINE \SYSTEM \CurrentControlSet\Services\Afd\Parameters]
DefaultReceiveWindow = 10240
DefaultSendWindow = 10240