packet loss
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i use remote network test my pfsense2.5 wan ip, mtr show it is has 10-35% packet loss.
use netstat -s show " 5636 packets not forwardable"
ip:
357619 total packets received
0 bad header checksums
0 with size smaller than minimum
0 with data size < data length
0 with ip length > max ip packet size
0 with header length < data size
0 with data length < header length
0 with bad options
1 with incorrect version number
0 fragments received
0 fragments dropped (dup or out of space)
0 fragments dropped after timeout
0 packets reassembled ok
188514 packets for this host
0 packets for unknown/unsupported protocol
107724 packets forwarded (0 packets fast forwarded)
5636 packets not forwardable
0 packets received for unknown multicast group
0 redirects sent
178832 packets sent from this host
0 packets sent with fabricated ip header
0 output packets dropped due to no bufs, etc.
4987 output packets discarded due to no route
0 output datagrams fragmented
0 fragments created
0 datagrams that can't be fragmented
0 tunneling packets that can't find gif
0 datagrams with bad address in headerhow i do check and fix it?
and i search find http://m.landingbj.com/showtopic.jsp?rootid=254421 about enable net.inet.ip.fastforwarding=1, so it is packet loss?
and i see the netmap-fwd news from https://www.netgate.com/blog/pfsense-around-the-world-better-ipsec-tryforward-and-netmap-fwd.html
what's need i do it for speed?
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There is nothing to change for those on current versions. The kernel only does tryforward which is the best possible performance.
"not forwardable" doesn't necessarily mean a performance problem. If it were a performance problem, they'd be in the drop counters, not that one.
I doubt the non-forwarded packets would be related to packet loss. More likely is that they were invalid in some way.
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I want to know how to find the cause of packet loss?
i am remote vps use mtr test to my local wan ip show packet loss.
intel NIC 350 and 24g RAM.
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netstat -ssp ip
ip:
178284 total packets received
150415 packets for this host
12639 packets forwarded
13480 packets not forwardable
166008 packets sent from this host
13248 output packets discarded due to no routenetstat -im
780113/8752/788865 mbufs in use (current/cache/total)
2850/7748/10598/1000000 mbuf clusters in use (current/cache/total/max)
33/7557 mbuf+clusters out of packet secondary zone in use (current/cache)
8198/3381/11579/524288 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/524288 9k jumbo clusters in use (current/cache/total/max)
0/0/0/124480 16k jumbo clusters in use (current/cache/total/max)
233528K/31208K/264736K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters delayed (4k/9k/16k)
0/0/0 requests for jumbo clusters denied (4k/9k/16k)
0 sendfile syscalls
0 sendfile syscalls completed without I/O request
0 requests for I/O initiated by sendfile
0 pages read by sendfile as part of a request
0 pages were valid at time of a sendfile request
0 pages were valid and substituted to bogus page
0 pages were requested for read ahead by applications
0 pages were read ahead by sendfile
0 times sendfile encountered an already busy page
0 requests for sfbufs denied
0 requests for sfbufs delayed
