On Sun, Dec 18, 2016 at 07:01:42PM -0500, Greg Troxel wrote: > > 76nem...@gmx.ch writes: > > > I am working with an APU2 board (4gb, 3 lan and AMD CPu 1Ghz > > you can see specifications here http://www.pcengines.ch/apu2.htm) > > to make a router/firewall. > > > > Before choosing the OS I want to use I have done some benchmarks. > > My first benchmark is: > > 1) Copy of a big file (17GB) compressed with gzip > > from a Windows 10 machine to a Windows 8.1 machine. > > This is done by using CIFS on Windows. Each machine > > is at one side of the router. > > > > The results are strange: > > With OpenBSD and Linux (alpine linux 3.4) I get > > the maximum speed (112Mbytes/sec) while with NetBSD > > the speed is limited to 70Mbytes/sec. > > There are basically two things to see about. One is the raw speed of > packet forwarding. The other is whether there is any loss and how that > interacts with congestion control. Plus then there are odd things I am > not thinking of. > > NetBSD itself should be efficient. However, you are pushing close to 1 > Gb/s. So, I would want to look at network counters to see if there is > any trouble. Do "netstat -s" on the router to a file, before and after, > and diff -u. Also, do the equivalent on the test machines. > Here is the result of the difference on the router. I have had a look on it and I see that no "fast forward" are used.
Could be that the reason of slowness? I have read somewhere
that fast forward could increase routing speed.
Best regards,
Alan
Differences between file produced by the netstat -s command before and
after the transfer.
----------------------------------------------------------------------------------------
--- /tmp/avantCopy.txt 2016-12-21 11:00:32.000000000 +0100
+++ /tmp/apresCopy.txt 2016-12-21 11:07:48.000000000 +0100
@@ -84,18 +84,18 @@
0 packets with ECN CE bit
0 packets ECN ECT(0) bit
udp:
- 203 datagrams received
+ 231 datagrams received
0 with incomplete header
0 with bad data length field
0 with bad checksum
0 dropped due to no socket
- 36 broadcast/multicast datagrams dropped due to no socket
+ 45 broadcast/multicast datagrams dropped due to no socket
0 dropped due to full socket buffers
- 167 delivered
- 187 PCB hash misses
- 169 datagrams output
+ 186 delivered
+ 215 PCB hash misses
+ 188 datagrams output
ip:
- 15146914 total packets received
+ 30256038 total packets received
0 bad header checksums
0 with size smaller than minimum
0 with data size < data length
@@ -110,13 +110,13 @@
0 malformed fragments dropped
0 fragments dropped after timeout
0 packets reassembled ok
- 203 packets for this host
+ 231 packets for this host
0 packets for unknown/unsupported protocol
- 15146698 packets forwarded (0 packets fast forwarded)
- 13 packets not forwardable
+ 30255791 packets forwarded (0 packets fast forwarded)
+ 16 packets not forwardable
0 redirects sent
0 packets no matching gif found
- 169 packets sent from this host
+ 188 packets sent from this host
0 packets sent with fabricated ip header
0 output packets dropped due to no bufs, etc.
0 output packets discarded due to no route
@@ -208,7 +208,7 @@
0 ipcomp input bytes
0 ipcomp output bytes
ip6:
- 44 total packets received
+ 54 total packets received
0 with size smaller than minimum
0 with data size < data length
0 with bad options
@@ -218,7 +218,7 @@
0 fragments dropped after timeout
0 fragments that exceeded limit
0 packets reassembled ok
- 32 packets for this host
+ 39 packets for this host
0 packets forwarded
0 packets fast forwarded
0 fast forward flows
@@ -227,18 +227,18 @@
20 packets sent from this host
0 packets sent with fabricated ip header
0 output packets dropped due to no bufs, etc.
- 50 output packets discarded due to no route
+ 56 output packets discarded due to no route
0 output datagrams fragmented
0 fragments created
0 datagrams that can't be fragmented
0 packets that violated scope rules
0 multicast packets which we don't join
Input packet histogram:
- UDP: 32
- ICMP6: 12
+ UDP: 39
+ ICMP6: 15
Mbuf statistics:
0 one mbufs
- 44 one ext mbufs
+ 54 one ext mbufs
0 two or more ext mbufs
0 packets whose headers are not continuous
0 tunneling packets that can't find gif
@@ -258,7 +258,7 @@
0 bad checksums
0 messages with bad length
Input packet histogram:
- router advertisement: 12
+ router advertisement: 15
Histogram of error messages to be generated:
0 no route
0 administratively prohibited
@@ -348,13 +348,13 @@
0 packets with ECN CE bit
0 packets ECN ECT(0) bit
udp6:
- 32 datagrams received
+ 39 datagrams received
0 with incomplete header
0 with bad data length field
0 with bad checksum
0 with no checksum
0 dropped due to no socket
- 32 multicast datagrams dropped due to no socket
+ 39 multicast datagrams dropped due to no socket
0 dropped due to full socket buffers
0 delivered
0 datagrams output
@@ -459,13 +459,13 @@
0 delivered
0 datagrams output
arp:
- 86 packets sent
- 82 reply packets
+ 99 packets sent
+ 95 reply packets
4 request packets
- 103 packets received
+ 120 packets received
2 reply packets
- 101 valid request packets
- 20 broadcast/multicast packets
+ 118 valid request packets
+ 24 broadcast/multicast packets
0 packets with unknown protocol type
0 packets with bad (short) length
0 packets with null target IP address
pgpVIOHfnk0nY.pgp
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