I have kind of a weird behavior with my 0.4.3 version. I've noticed that after a few hours mining the hashrate declines then stabilizes.
On CN-R after 30 mn I have my peak HR @3760H/s (4 RX574), then after 4 hours I get 3715H/s, then 3680 H/s.
Has anybody else the same behaviour from the miner ?
Usually it's one of two things: one or more crashed threads (but only one per gpu so each gpu still hashes with ok-ish speed) or threads that no longer run in a staggered/interleaved way. You can tell which case it is by shutting down - if the miner shuts down clean with no warning log or extra delay, there were no crashed threads.
The former case (crashed threads) needs clock tweaking, something isn't 100% stable. The latter case (no crashed threads) was addressed in v0.4.4 by adding the interleave adjustment logic. It has helped in the vast majority of cases that I've followed up on, but sometimes it can over-adjust instead.
Assuming it's the latter case for you, have you checked if v0.4.4 works better? Or have you tried v0.4.4 and you have some other issue forcing you back to 0.4.3?
[2019-04-27 19:49:26] Stats Uptime: 0 days, 01:02:31[2019-04-27 19:49:26] GPU 0 [55C, fan 37%] cnr: 1.997kh/s, avg 1.996kh/s, pool 2.444kh/s a:49 r:0 hw:0
[2019-04-27 19:49:26] GPU 1 [52C, fan 39%] cnr: 501.3 h/s, avg 501.1 h/s, pool 529.2 h/s a:10 r:0 hw:0
[2019-04-27 19:49:26] GPU 2 [59C, fan 60%] cnr: 990.7 h/s, avg 990.5 h/s, pool 937.0 h/s a:18 r:0 hw:0
[2019-04-27 19:49:26] GPU 3 [58C, fan 54%] cnr: 1.004kh/s, avg 1.004kh/s, pool 979.7 h/s a:20 r:0 hw:0
[2019-04-27 19:49:26] GPU 4 [55C, fan 39%] cnr: 992.7 h/s, avg 988.8 h/s, pool 1.050kh/s a:21 r:0 hw:0
[2019-04-27 19:49:26] GPU 5 [56C, fan 49%] cnr: 969.2 h/s, avg 971.2 h/s, pool 578.9 h/s a:11 r:0 hw:0
[2019-04-27 19:49:26] Total cnr: 6.455kh/s, avg 6.452kh/s, pool 6.519kh/s a:129 r:0 hw:0
[2019-04-27 19:49:29] Pool pool.minexmr.com received new job. (job_id: IQadw6QFAK4OGNPLTPy0btC8g8tg)
[2019-04-27 19:49:29] Pool pool.minexmr.com set difficulty to 195181
[2019-04-27 19:51:30] Initializing GPU 0.
[2019-04-27 19:51:30] Runtime Command Keys: h - help, s - stats, e - enable gpu, d - disable gpu, q - quit
[2019-04-27 19:51:30] Watchdog thread starting.
[2019-04-27 19:51:30] API initialized on 0.0.0.0:522
[2019-04-27 19:51:30] Pool pool.minexmr.com connecting to address 103.60.164.109.
[2019-04-27 19:51:30] Pool pool.minexmr.com successfully connected to address 103.60.164.109.
[2019-04-27 19:51:30] Pool pool.minexmr.com login succeeded.(30 ms)
[2019-04-27 19:51:30] Pool pool.minexmr.com received new job. (job_id: jDzNeP7qpABbn5n1hCheh3uGFrUl)
[2019-04-27 19:51:30] Pool pool.minexmr.com set difficulty to 80000
[2019-04-27 19:51:31] Initializing GPU 1.
[2019-04-27 19:51:32]
Initialization comm error 4[2019-04-27 19:51:32] Initializing GPU 2.
[2019-04-27 19:51:33] Dev pool connected and ready.
[2019-04-27 19:51:33] Initializing GPU 3.
[2019-04-27 19:51:33] Miner load at 0%, hashrates are not at max speed yet.
[2019-04-27 19:51:34] Initializing GPU 4.
[2019-04-27 19:51:34] Initializing GPU 5.
[2019-04-27 19:51:35] Successfully initialized GPU 0: Vega with 56 CU (PCIe 06:00.0) (CN 16+14)
[2019-04-27 19:51:35] Successfully initialized GPU 1: Polaris with 12 CU (PCIe 08:00.0) (CN L4+4)
[2019-04-27 19:51:35] Successfully initialized GPU 2: Polaris with 32 CU (PCIe 13:00.0) (CN 8+7)
[2019-04-27 19:51:35] Successfully initialized GPU 3: Polaris with 32 CU (PCIe 14:00.0) (CN 8+7)
[2019-04-27 19:51:35] Successfully initialized GPU 4: Polaris with 32 CU (PCIe 15:00.0) (CN 8+7)
[2019-04-27 19:51:35] Successfully initialized GPU 5: Polaris with 32 CU (PCIe 16:00.0) (CN 8+7)
[2019-04-27 19:51:36] Miner load at 7%, hashrates are not at max speed yet.
[2019-04-27 19:51:39] Miner load at 38%, hashrates are not at max speed yet.
[2019-04-27 19:51:42] Miner load at 60%, hashrates are not at max speed yet.
[2019-04-27 19:51:45] Miner load at 75%, hashrates are not at max speed yet.
[2019-04-27 19:51:48] Miner load at 90%, hashrates are not at max speed yet.
[2019-04-27 19:51:51] Miner load at 100%, hashrates are not at max speed yet.
[2019-04-27 19:51:53] Pool pool.minexmr.com share accepted. (GPU5) (a:1 r:0) (63 ms)
[2019-04-27 19:51:54] Miner load at 100%, initial ramp-up completed.
[2019-04-27 19:51:56] Pool pool.minexmr.com received new job. (job_id: rac0jGgL6PdSZ2M6sbrEK5j0kW83)
[2019-04-27 19:51:56] Pool pool.minexmr.com set difficulty to 96000
[2019-04-27 19:51:59] Pool pool.minexmr.com share accepted. (GPU2) (a:2 r:0) (59 ms)
[2019-04-27 19:52:00] Stats Uptime: 0 days, 00:00:31
Dear developer, two questions
1, the rig reboot without any error, the power was always on, what can be the reason?
2, what's the error message " Initialization comm error 4" mean, what could be the problem?