I’m running NTP servers on centos 7.6. I know that I can get a list of ntp
clients doing “ntpq -p” but I seem to remember reading somewhere that it was
limited to 500 clients.
Is there another method in which I can quickly get / monitor the number of
clients that are “attached” to my server if
Are you using a standard dist?
ntpq -c mru
gives you the client list.
The list length and size can be tailored:
ex:
# mru [maxdepth count | maxmem kilobytes | mindepth count | maxage seconds |
initalloc count | initmem kilobytes | incalloc count |
incmem kilobytes]
mru mindepth 5 maxdepth 100
Jakob Bohm wrote:
On 11/08/2019 14:03, Michael Haardt wrote:
Jakob Bohm writes:
Minor issue 1: You seem not to initialize fudgeminjitter if not
configured. Probably to 0.0
All values are initialized to 0 when the structs are allocated, I
checked that. That's why it works without a flag bit
On 13/08/2019 13:24, Per Hedeland wrote:
In article Jakob Bohm
writes:
On 11/08/2019 15:44, Per Hedeland wrote:
Hi,
Since the idea of using a USB-to-serial adapter for PPS is often
dismissed here as more or less pointless/useless, (due to the inherent
delays in the USB communication AFAIU),
On 2019-08-12, Michael Haardt wrote:
> I would appreciate if we could focus on the major issues first, like
> why the modified jitter is not shown by ntpq.
I think the explanation is that you are modifying jitter of individual
samples, but ntpq -p is showing jitter between offsets. Print all
vari
On 2019-08-11, Per Hedeland wrote:
> https://lists.freebsd.org/pipermail/freebsd-usb/2019-August/016078.html
>
> TL;DR^2 The author carried out a pretty sophisticated (IMHO) test with
> two different USB-to-serial adapters feeding PPS to ntpd, and found an
> offset of some 200 usec with 20-30 usec
> Forgive me for my lack of knowledge in this area,
> but does the above command and output still show the vulnerability?
> If so, is the fix (as NTP Bug 3118 explains) to add
> "restrict default noquery" to the ntp.conf file?
> If this is the fix, then all queries are shutoff, correct?
Philip,
On 13/08/2019 13:50, Per Hedeland wrote:
In article Jakob Bohm
writes:
On 13/08/2019 13:24, Per Hedeland wrote:
In article Jakob Bohm
writes:
On 11/08/2019 15:44, Per Hedeland wrote:
Hi,
Since the idea of using a USB-to-serial adapter for PPS is often
dismissed here as more or less poi
>
> I?m running NTP servers on centos 7.6. I know that I can get a list of ntp
> clients doing ?ntpq -p? but I seem to remember reading somewhere that it was
> limited to 500 clients.
>
> Is there another method in which I can quickly get / monitor the number of
> clients that are ?attached? t
Still playing with the experimental setup, serial
port pps working fine, but can't see which device
name to use for the parallel port ack input.
Checked man pages and other docs and it seems that
there are three possible devices associated with the
hardware port, ppbus0, ppi0 and lpt0. lpt0 looks
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