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I would like to view Ethereum txpool. From geth command line page it seems like I can use geth monitor to get a view of the txpool metic. But there aren't many document on how to use the tool.

Does anyone know a good example of using geth monitor?

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Actually, the geth documentation describes pretty well how to use the tool geth monitor. Essentially, to do so you need to start a geth instance with both the --metrics flag and the support for the debug api.

An example for a local ethereum network:

geth \
    --rpc \
    --rpcport 8545 \
    --rpcaddr 127.0.0.1 \
    --rpccorsdomain 127.0.0.1 \
    --rpcapi "eth,web3,miner,net,admin,personal,debug" \
    --metrics \
    --bootnodes <your-bootnodes>

So now you can check that it shows correctly the metrics:

geth attach http://127.0.0.1:8545 --exec "debug.metrics(false)"

And in particular for the txpool metrics:

 geth attach http://127.0.0.1:8545 --exec "debug.metrics(false).txpool"

Now you can try to follow the documentation to show the real time graphics for the txpool:

 geth monitor --attach=http://127.0.0.1:8545 txpool

N.B. As reported in the question Geth monitor graphics character encoding, you may have some problems with the encoding.

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Have you had any success with this?
I believe the node you wish to gather statistics from has to have --metrics set at startup? I have got to the stage of having graph axis displayed, but no data...

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  • Can I ask you what type of character encoding do you use to show the axes? Or what type of shell? – Briomkez May 26 '18 at 9:31
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    Briomkez << Huge respect, got it working..! Happy Unicorn :) – EthBytes Jun 20 '18 at 6:37
  • SSH to Ubuntu 16.10, usual vanilla BASH shell. My command: ../bin/geth_1811 monitor --attach=192.168.1.100:8547 txpool This gives ten "windows" all monitoring various aspects: pending, queued etc. Make sure you run first "collecting" instance of Geth with the apis:eth,web3,miner,net,admin,personal,debug < what I messed up on... Hth – EthBytes Jun 20 '18 at 6:50
  • BTW: Some metrics to play with: system/disk/readcount/MeanRate system/disk/readcount/Overall system/disk/readdata/Overall system/disk/writecount/Overall system/memory/allocs/Overall system/memory/frees/Overall system/memory/inuse/Overall – EthBytes Jun 20 '18 at 6:58

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