[volume] In parallel, we create a replica and save the file to disk

[kmlebedev]

Describe the bug

From the metrics it is clearly visible that it takes 800 ms to put a chunk of 64 MB, where the chunk is sequentially saved to disk, and then 600 ms is transferred to a synchronous replica.

System Setup

weed 3.62

Expected behavior

I would like to optimize uploading time and memory consumption by performing write operations to the disk and to the replica in parallel.

[kmlebedev]

before with gomemlimit 1g

[kmlebedev]

before without limit