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[Bug] tcpreplay goes full speed after some time #779

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mikolajpod opened this issue Feb 27, 2023 · 2 comments
Closed

[Bug] tcpreplay goes full speed after some time #779

mikolajpod opened this issue Feb 27, 2023 · 2 comments
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@fklassen
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@mikolajpod
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mikolajpod commented Feb 27, 2023 •
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Hi.

I'm using the following command
tcpreplay -i ens224 -p 4800 -l 0 file.pcap
and at the begining the rate is as expected.

After some time (12-13 days) it starts to replay at full speed.

After stopping with ctrl-c (about 12 hours after going wild) it printed:
Actual: 22192758064 packets (30315118877440 bytes) sent in 1113425.57 seconds
Rated: 27226892.9 Bps, 217.81 Mbps, 19931.96 pps
Flows: 2 flows, 0.00 fps, 1710129550895712 flow packets, 0 non-flow
Statistics for network device: ens224
        Successful packets:        22192758063
        Failed packets:            0
        Truncated packets:         0
        Retried packets (ENOBUFS): 0
        Retried packets (EAGAIN):  0

TCPREPLAY VERSION:
tcpreplay version: 4.3.3 (build git:v4.3.3) (debug)
Copyright 2013-2018 by Fred Klassen - AppNeta
Copyright 2000-2012 by Aaron Turner
The entire Tcpreplay Suite is licensed under the GPLv3
Cache file supported: 04
Not compiled with libdnet.
Compiled against libpcap: 1.10.0
64 bit packet counters: enabled
Verbose printing via tcpdump: enabled
Packet editing: disabled
Fragroute engine: disabled
Injection method: PF_PACKET send()
Not compiled with netmap

OS INFO:
uname -a
Linux sycope-os 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 GNU/Linux
(It's debian 11.1)

HARDWARE:
lspci
...
0b:00.0 Ethernet controller: VMware VMXNET3 Ethernet Controller (rev 01)
13:00.0 Ethernet controller: VMware VMXNET3 Ethernet Controller (rev 01)
@fklassen
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This requires moving from 32 to 64 byte counters which is more of a feature than a bug. Too much for 4.4.4.

@fklassen fklassen self-assigned this Sep 3, 2023
@fklassen fklassen added the bug label Sep 3, 2023
fklassen added a commit that referenced this issue Sep 3, 2023
@fklassen
Bug #779 - honour overflow for all pps values
54bf031 
I'm not sure why PPS overflow protection was not implemented for lower rates.
This fix makes the overflow protection always available.

Also fix a compile warning.
fklassen added a commit that referenced this issue Sep 3, 2023
@fklassen
Merge pull request #821 from appneta/Bug_#779_pps_goes_full_speed_ove…
bea06a4 
…r_time

Bug #779 - honour overflow for all PPS values
@fklassen
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fklassen commented Sep 3, 2023

Fixed in PR #821

@fklassen fklassen closed this as completed Sep 3, 2023
@github-project-automation github-project-automation bot moved this to Done in 4.5 Aug 27, 2024
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