gettimeofday() in hping

[Stefan Lambrev]

Hi,

Ivan Voras wrote:
> Stefan Lambrev wrote:
>
>> I do not have HEPT on the servers that I test, but simple test on my 
>> laptop shows
>> that hping can generate with ACPI-fast ~4MB/s traffic, 5MB/s with HPET
>> and 8MB/s with TSC. 
>
> How much can Linux handle?
Will install ubuntu on the same machine and let you know, but my 
experience shows that FreeBSD + TSC
have the same performance as Linux.
>
> >I didn't check dummy time counter.
>
> If you do, it would give a nice indicator of how much the time 
> counters are expensive in both absolute terms and relative to the rest 
> of the stuff the program does (network IO). The "dummy" timecounter 
> just increments a number when called, no time keeping is involved.
>
>
Here are the max speeds I can reach with different counters (on the test 
server):

i8254 - 3.660 MB/s
ACPI-fast - 7.137 MB/s
TSC - 12.519 MB/s
dummy - 12.366 MB/s

-- 

Best Wishes,
Stefan Lambrev
ICQ# 24134177