Bug #4152
Kernel 4.4+ Possible SYN flooding on port 9981/9982. Sending cookies.
100%
Description
There is a problem with new standard kernel 4.4 and newer.
After more then 128 pps was make kernel start to drop packages
this make channel switching slow, web interface also.
kernel: [ 40.170303] TCP: request_sock_TCP: Possible SYN flooding on port 9981. Sending cookies. Check SNMP counters. kernel: [ 40.185854] TCP: request_sock_TCP: Possible SYN flooding on port 9982. Sending cookies. Check SNMP counters.
solution was found in other projects
https://github.com/zaphoyd/websocketpp/issues/549
https://access.redhat.com/solutions/30453
Files
History
Updated by Jaroslav Kysela almost 8 years ago
Updated by - Status changed from New to Fixed
- % Done changed from 0 to 100
Applied in changeset commit:tvheadend|1f894a6951ec17d07679b4e7f7ba85681df04d93.
Updated by saen acro almost 8 years ago
Updated by 
- File bitrate.GIF bitrate.GIF added
- File blur.PNG blur.PNG added
Jaroslav Kysela wrote:
Applied in changeset commit:tvheadend|1f894a6951ec17d07679b4e7f7ba85681df04d93.
one idea better but if tv watched web interface is very slow and loading with blurred background show for 10+ seconds
channel switching 1 of 5-15 click succes
there is also very wrong values for stream bitrate jumping x3 x6 times
mpegts: too much queued table input data (over 2MB), discarding new
Updated by Jaroslav Kysela almost 8 years ago
Continue this reporting in bug #3971 . I don't have an idea what's wrong, because I cannot reproduce this here, so I rely only on the feedback from users.