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Meaning of columns shown by netstat -q
Hi,
I issue netstat -q and quality statisitcs is shown.
But I don't know meaning of columns shown by netstat -q.
Does anyone know about columns of netstat -q?
mxswnd
maxseg
srtt
srtvar
sndwnd
sncwnd
rcvwnd
rttimo
SR
SS
ND
AS
Active Internet connections
Local Address Foreign Address mxswnd maxseg srtt srtvar sndwnd sncwnd rcvwnd rttimo SR SS ND AS
x200-1.54230 x200-3.50043 0 0 0 0 0 0 0 0
localhost.976 localhost.807 0 0 0 0 0 0 0 0
10.32.10.211.65124 xp001.rdcj.corp..ldap 66560 1448 7 3 66304 5289 131768 0 X X X X
10.32.10.211.ssh 152.62.27.76.59650 65536 1428 395 156 65024 132566 131376 0 X X X X
localhost.807 localhost.724 146944 16332 11 9 146944 999999 146988 0 X X X X
localhost.724 localhost.807 146944 16332 7 3 146944 32928 146988 0 X X X X
x200-1.6116 x200-3.59691 132736 1952 7 3 132736 132887 132736 45 X X X
x200-1.51637 x200-3.isi-job-priv 132736 1952 20 11 132736 4577 132736 0 X X X
x200-1.56859 x200-3.6116 132736 1952 7 3 132736 6611 132736 233 X X X
x200-1.7117 x200-3.62890 132736 1952 28 7 132736 46724 132736 285 X X X
x200-1.61533 x200-3.6116 132736 1952 7 3 132736 5249 132736 66 X X X
x200-1.55381 x200-3.isi-boot-cmd2 132736 1952 7 3 132736 3924 132736 950 X X X
Best Reards,
HIDETA
johnsonka
130 Posts
1
October 5th, 2015 10:00
Hello HIDETA ,
Thank you for your question! Here is a list of the column headers for you:
mxswnd: largest window peer has offered
maxseg: maximum segment size
srtt: smoothed round trip time
srtvar: variance in round trip time
sndwnd: send window
sncwnd: congestion-controlled window
rcvwnd: receive window
rttimo: number of tcp re-transmit timeouts so far
SR: Client have/will request window scaling
SS: Client has requested scaling
ND: don't delay packets to coalesce
AS: client reported cluster could SACK
If you run in to any other questions, let us know!
Hidetaka
119 Posts
0
October 6th, 2015 22:00
Hi Katie,
Thank you for your reply.
Could you add question about srtt and srtvar?
Customer asked me what is unit of srtt and srtvar.
If the unit of srtt is mili second, I think actual value is too large.
Best regards,
Hidetaka.
johnsonka
130 Posts
1
October 7th, 2015 12:00
Hello,
After some research and double checking with a few colleagues, the value is reported in milliseconds according to FreeBSD (the Unix OS that OneFS is built on.)
Please let me know if you have any additional questions or concerns.