I was able to get the discarded amount lowered as well as the load. I changed the queue to 0 from 4096 and added --scan-time 1 --expiry 1 to the cgminer file.
***IF YOU ARE NOT SURE WHAT THIS MEANS DO NOT TRY AS YOU WILL BRICK YOUR UNIT***
Thanks for this post ! Going to try this on one of my units and see how it works out.
This was default on the new firmware:
PARAMS="$AOPTIONS $POOL1 $POOL2 $POOL3 $_pb $_ow $_bec --api-listen --api-network --bitmain-checkn2diff --bitmain-hwerror --queue 4096"
I tried it on one by adding the --scan-time 1 --expiry 1 flags, but didn't see any difference in discards or load. Maybe some of you will have better luck.
Did you change the Queue to 0?
that I did not do - misread what you wrote. YES!! Just changed it and am seeing really good numbers. Discards are negligible now - 20 accepts and 3 discards. Load dropped from high 2s to under 2. AWESOME!!!!! You rock!
Since I've never SSH one of these, I don't want to risk bricking it.
If this fix turns out to be solid though, I hope Bitmain will include it in the next firmware release.
Or maybe I'll learn to SSH. On a side note. Does anyone know if you can get a better GHS/watt ratio by under-clocking the S1?
I'll tell you how to do it, but not going to go into every detail (how to SSH, sed, etc). Not responsible for you f'ing your stuff up.
1. SSH into the miner
2. cd /etc/init.d
3. cp cgminer cgminer.bak (in case you really muck it up, cgminer.bak will be your backup)
4. Enter this in the terminal: sed -i 's/--queue 4096"/--queue 0 --scan-time 1 --expiry 1"/g' cgminer
5. press enter
6. go to the web interface of the miner - Status > Miner Configuration > Save & Apply - this will restart cgminer with the new settings
7. go tip Duce for figuring this out for us
Duce, where's your tip jar? I owe you.
This is what you're changing:
Original --> PARAMS="$AOPTIONS $POOL1 $POOL2 $POOL3 $_pb $_ow $_bec --api-listen --api-network --bitmain-checkn2diff --bitmain-hwerror --queue 4096"
New & Improved --> PARAMS="$AOPTIONS $POOL1 $POOL2 $POOL3 $_pb $_ow $_bec --api-listen --api-network --bitmain-checkn2diff --bitmain-hwerror --queue 0 --scan-time 1 --expiry 1"
//S1 undervolt guide -
https://bitcointalksearch.org/topic/m.5838713 I'm attempting this mod, but when I enter sed -i 's/--queue 4096"/--queue 0 --scan-time 1 --expiry 1"/g' cgminer into putty, I get "no such file or directory". Does anyone know what I am doing wrong, I'm afraid to go much further.
so far so good...
