2017-04-13 17:47 GMT+08:00 Reindl Harald <h.reindl@xxxxxxxxxxxxx>: > > > Am 13.04.2017 um 11:44 schrieb d tbsky: >> >> 2017-04-13 17:09 GMT+08:00 Reindl Harald <h.reindl@xxxxxxxxxxxxx>: >>> >>> >>> >>> Am 13.04.2017 um 10:13 schrieb d tbsky: >>>> >>>> >>>> Hi: >>>> I just tried to install rhel 7.3 on a 4 disk raid6. it's a >>>> minimal install but took 3 hours to finish. I found the disk >>>> initialize speed is around 150MB/sec. in past the disk initialize >>>> speed will down to slow speed when there are other disk IO, but it >>>> seems not the case in rhel 7.3. >>>> >>>> I have check the below parameter: >>>> cat /proc/sys/dev/raid/speed_limit_min -> 1000 >>>> cat /proc/sys/dev/raid/speed_limit_max -> 200000 >>>> >>>> when the system is idle, the init speed is also about 150M/sec, so >>>> the system is use all the power to init when there are other disk IO. >>>> >>>> is it normal? where should I check? >>> >>> >>> >>> sysctl.conf: >>> dev.raid.speed_limit_min = 10000 >>> dev.raid.speed_limit_max = 50000 >>> >>> sysctl -p >>> >>> and it will adjust itself within seconds - the same works if that values >>> are >>> too low and raid-check would take forever >> >> >> hi: my problem is the speed is too high, not too low... > > > and? > > you said it is at 200000 > i showed you how to reduce it to 50000 or whatever you want hi: sorry I didn't understand you correctly. thanks for the hint. I will try to resolve the root cause of the problem. Regards, tbskyd -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
