Romex Software Forum

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It was 120 seconds AFAIK, but we have to wait for primocache dev to get definitive answer. It's correct. Flushing ~10-20 GB at times to Raid5 (3x 8 TB) and it kills my array while writing 450 MB/s (flushing). If I could limit flushing speed to ~100 MB/s, this would still be fast enough and wouldn't...

I currently can't get any of the write modes, other than native, to write in idle read time (when the compute task kicks in). Despite being listed as native+, and regardless of the defer-write time, these write modes refuse to write until the buffer is full and it panic's. For chia mining, 8GB L1 f...

azzurro wrote: ↑Wed May 26, 2021 12:27 pm That resulted in the cache being full eventually, having to flush it "urgently" in the worst possible moment.

In most scenarios, native mode + a proper latency should be enough. Reduce latency to avoid the urgent write.

Would be interested to hear others' thoughts on it as well, see if anyone has any real world use cases where Primocache would actually make a noticeable difference in plot times. We have already received some feedbacks from customers, saying that they can do more plotting at the same time. Usually ...

What happens, if a block is requested from the disk which hasn't been written yet, I guess it will then be served directly from L1 cache (RAM), correct? Yes. I guess the only thing left for this to be perfect for chia would be to be able to fine-tune what PrimoCache considers the machine/disk/cpu b...

azzurro wrote: ↑Mon May 24, 2021 12:14 am what is "windows idle"?

PrimoCache determines the idle state by checking CPU utilization and disk activities.

azzurro wrote: ↑Sun May 23, 2021 11:35 pm Wouldn't that be something that could be implemented in PrimoCache?

PrimoCache can. You can set L2 cache (SSD cache) to be read-only (100% read which is set by default). And with Defer-Write, you can increase write performance a lot, as well as converting random writing to sequential writing.

It seems that the speed of single plotting is mainly affected by CPU frequency. Primo Ramdisk and PrimoCache might not help a lot on improving the speed of single plotting. However, they can improve the speed of parallel plotting a lot and fully utilize the RAM ability.

In addition to reduce the write amount, Primo Ramdisk or PrimoCache (Defer-Write), with large RAM, can help to improve the speed of parallel plotting.