diff options
| author | Brian Tierney <bltierney@lbl.gov> | 2014-03-06 17:03:19 -0800 |
|---|---|---|
| committer | Brian Tierney <bltierney@lbl.gov> | 2014-03-06 17:03:19 -0800 |
| commit | 7f6c44f3255b0363a29fe52ac1a77f595a542dcd (patch) | |
| tree | ea0f31ea054062f1105b3e26d1853b55c0d75b88 /README.md | |
| parent | 2be606a503abc5898cf0c34becdd2c8217a00d7f (diff) | |
| download | iperf3-7f6c44f3255b0363a29fe52ac1a77f595a542dcd.tar.gz | |
Updating 'known issues' for Linux TCP buffer size oddness
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -138,3 +138,8 @@ try "-l 4K". * On OpenBSD, the server seems to require a "-4" argument, implying that it can only be used with IPv4. +* When specifying the TCP buffer size using the "-w" flag on Linux, Linux +doubles the value you pass in. (You can see this using iperf3's debug flag). +But then the CWND does not actually ramp up to the doubled value, but only +to about 75% of the doubled value. This appears to be by design. + |