Re: Panic on a -current from 13/12/2018

[Chavdar Ivanov <ci4ic4%gmail.com@localhost>]

On Fri, 21 Dec 2018 at 22:05, Cherry G. Mathew <cherry%netbsd.org@localhost> wrote:
>
> On December 22, 2018 2:24:44 AM GMT+05:30, Chavdar Ivanov <ci4ic4%gmail.com@localhost> wrote:
> ...
> >
> >It is interesting also that when NetBSD is ran under XenServer (XCP-NG
> >actually) in PV mode, benchmarked against the same 8.99.28 version
> >running on a physical machine, everything on a 1GB interface and
> >switch, I get maximum saturated line (~ 933Mb/s). When the iperf3
> >server is on the same XCP-BG guest and the client - a CentOS guest -
> >the figures approach 2.3Gb/sec.
> >
>
> Do you have jumbo frames on on the centos VM?
Not as far as I see it:
...
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
group default qlen 1000
    link/ether da:6f:e3:73:da:ce brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.22/24 brd 192.168.0.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::4975:2632:3eb9:916/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
...

the iperf3 figures are as follows:
...

$ iperf3  -c n8x
                                     1 ↵
Connecting to host n8x, port 5201
[  4] local 192.168.0.22 port 46924 connected to 192.168.0.202 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   184 MBytes  1.54 Gbits/sec    0   66.5 KBytes
[  4]   1.00-2.00   sec   251 MBytes  2.11 Gbits/sec    0    103 KBytes
[  4]   2.00-3.00   sec   291 MBytes  2.44 Gbits/sec    0    133 KBytes
[  4]   3.00-4.00   sec   329 MBytes  2.76 Gbits/sec    0    164 KBytes
[  4]   4.00-5.00   sec   334 MBytes  2.81 Gbits/sec    0    205 KBytes
[  4]   5.00-6.00   sec   289 MBytes  2.43 Gbits/sec    0    205 KBytes
[  4]   6.00-7.00   sec   327 MBytes  2.74 Gbits/sec    0    205 KBytes
[  4]   7.00-8.00   sec   329 MBytes  2.76 Gbits/sec    0    205 KBytes
[  4]   8.00-9.00   sec   325 MBytes  2.72 Gbits/sec    0    205 KBytes
[  4]   9.00-10.00  sec   331 MBytes  2.77 Gbits/sec    0    205 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  2.92 GBytes  2.51 Gbits/sec    0             sender
[  4]   0.00-10.00  sec  2.92 GBytes  2.51 Gbits/sec                  receiver

iperf Done.
...

n8x is actually 8-STABLE. The figures for -current in the same
conditions are a bit slower:---
-----
─$ iperf3  -c hween
Connecting to host hween, port 5201
[  4] local 192.168.0.22 port 47856 connected to 192.168.0.248 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   178 MBytes  1.49 Gbits/sec    0   67.9 KBytes
[  4]   1.00-2.00   sec   219 MBytes  1.84 Gbits/sec    0    100 KBytes
[  4]   2.00-3.00   sec   246 MBytes  2.06 Gbits/sec    0    136 KBytes
[  4]   3.00-4.00   sec   263 MBytes  2.20 Gbits/sec    0    165 KBytes
[  4]   4.00-5.00   sec   287 MBytes  2.41 Gbits/sec    0    199 KBytes
[  4]   5.00-6.00   sec   275 MBytes  2.31 Gbits/sec    0    199 KBytes
[  4]   6.00-7.00   sec   264 MBytes  2.22 Gbits/sec    0    199 KBytes
[  4]   7.00-8.00   sec   264 MBytes  2.22 Gbits/sec    0    199 KBytes
[  4]   8.00-9.00   sec   267 MBytes  2.24 Gbits/sec    0    199 KBytes
[  4]   9.00-10.00  sec   274 MBytes  2.30 Gbits/sec    0    199 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  2.48 GBytes  2.13 Gbits/sec    0             sender
[  4]   0.00-10.00  sec  2.48 GBytes  2.13 Gbits/sec                  receiver

iperf Done.

-------

Between the two NetBSD hosts I get just under 1.7Gbist/sec.

Go figure...

>
> Thanks,
>


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