[Iftop-users] Debugging MySQL Replication lag using iftop utility

Scott Bertilson ssb at umn.edu
Fri Jul 8 17:01:11 BST 2016


It isn't really designed for monitoring in the background in the sense that
the current code base can output as curses-free text (-t), but it isn't CSV
or any other easily parse-able format.

You can easily filter what it monitors using the -f option (tcpdump/pcap
style).

On Fri, Jul 8, 2016 at 6:01 AM, Kaushal Shriyan <kaushalshriyan at gmail.com>
wrote:

> Hi,
>
> Is there a way to monitor bandwidth usage using iftop? I am currently
> debugging a *MySQL Master Slave Replication lag issue*.
>
> Master Server IP :- 192.168.1.10
> Slave Server IP :- 192.168.1.11
>
> I am interested in measuring the network traffic between Master and Slave
> at a particular period. For example the lag happens only during late night
> hours around 3:00 am till 4:00 am. Can iftop network monitoring utility be
> run in background or daemon mode or invoked by cron during a specific time
> period to see if the network is a bottleneck for the *Slave Lag*. Also
> can i filter source ip which is 192.168.1.10 (IP of the Master MySQL
> Server)?
>
> Any help will be highly appreciable.
>
> Regards,
>
> Kaushal
>
>
>
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>
>
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