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Dec
31
awarded  Notable Question
Nov
6
awarded  Popular Question
Sep
7
comment Number of CPU cores versus frequency of cores in hypervisor
I understand the RAS part now, but I'm still bit confused about the statement that more cores means that one is able to run more VMs. Why is that so? I mean for example in case of Core i7-4790K and Xeon E5-1428L v3 both are 16GHz in total if you sum the frequencies of the cores. Why should Xeon E5-1428L v3 support more VMs?
Sep
7
accepted Number of CPU cores versus frequency of cores in hypervisor
Sep
7
comment Number of CPU cores versus frequency of cores in hypervisor
I see. So in general there is not a huge difference between same microarchitecture 4x 4GHz cores and 8x 2GHz cores if physical CPU is used for running virtual machines?
Sep
7
awarded  Critic
Sep
7
comment Number of CPU cores versus frequency of cores in hypervisor
Does vCPU map to one core of physical CPU? And by reliability features you mean ECC memory support?
Sep
7
asked Number of CPU cores versus frequency of cores in hypervisor
Mar
19
awarded  Curious
Feb
27
awarded  Popular Question
Jan
13
asked When does caching name-server include the authority section?
Jan
13
accepted Understand the TTL in DNS zone SOA record
Jan
12
comment Understand the TTL in DNS zone SOA record
Thanks for such exhaustive reply! Does this mean that while one is not able to ask TTL for zone over DNS protocol(stored as TTL variable, hardcoded to DNS server software or overwritten by caching name-server), it is possible to ask how long remote name-servers should cache a non-successful response? And latter is stored on last field in SOA record(86400 seconds in my example)?
Jan
9
asked Understand the TTL in DNS zone SOA record
Aug
27
awarded  Nice Question
Jun
17
awarded  Popular Question
Mar
12
awarded  Yearling
Mar
12
accepted Is it possible to write into RAID chunk multiple times?
Mar
12
comment Is it possible to write into RAID chunk multiple times?
Thanks for this clarification!
Mar
11
comment Linux software-RAID4/RAID5 and CPU usage
@TomTom if you write a 1GB file at 0.5GB/s, then you have to perform 4G XOR operations in a second. However, I fully understand your point and SSD's in RAID5 is indeed an extreme example.