Tomek, The only thing other thing that I can think of is that is a bit unusual about my system is that I use a small 32Gb drive for my swap and /tmp partitions I suppose if hdparm used the /tmp directory for it's operations it might make a difference. Just a thought. Best, Colin
On Tuesday, 27 December 2016 11:25:42 GMT you wrote: > Tomek, > Are you sure you don't have a problem? > I have a Samsung SSD 850 EVO 500GB > and I'm getting > Timing buffered disk reads: 1392 MB in 3.00 seconds = 463.56 MB/sec > Timing buffered disk reads: 1396 MB in 3.00 seconds = 464.81 MB/sec > Timing buffered disk reads: 1412 MB in 3.00 seconds = 470.39 MB/sec > > and timing for cached reads: 8024 MB in 2.00 seconds = 4014.81 MB/sec for > the cache. > > I'm using f2fs and this mother board is nothing special being AMD and of 2013 > vintage it is 8 core though and has 16Gig of RAM. > It's the same drive just bigger. > Best, > Colin > > > > On Monday, 26 December 2016 17:26:23 GMT Ben Bullard wrote: > > I tried throughput-performance, desktop, and realtime and had same > > problem with all. Then I tried disabling tuned.service and that worked > > in that there are no longer drops or fluctuations in read speed under > > hdparm over 10 hour time period. > > > > Ben Bullard > > ben79 > > -------------------- > > OpenMandriva-QA Team > > > > On 12/25/2016 05:19 PM, Tomasz Paweł Gajc wrote: > > > Dnia niedziela, 25 grudnia 2016 16:58:19 CET Ben Bullard pisze: > > >> Drive in question: Model Family: Crucial/Micron > > >> MX100/MX200/M5x0/M600 Client SSDs > > >> > > >> Device Model: Crucial_CT500MX200SSD4 > > >> > > >> Firmware Version: MU04 > > >> > > >> Ok, this problem isn't going away. TPG, Colin, Bero, or anyone what logs > > >> or test/commands in addition to omv-bug-report.log do I need to include > > >> for a bug report on this. > > > Hard to say what may be the problem. > > > Maybe it's related to aggresive APM on your SATA ports. > > > > > > tuned daemon may interfere here. > > > > > > take a look on: > > > tuned-adm active > > > > > > then change to diffrent profile: > > > > > > tuned-adm profile throughput-performance > > > > > > and then run hdparm tests > > > > > >> There was a kernel-firmware (20161225) update > > >> today I hoped would address this but it didn't. > > > kernel-firmware has nothing to do with firmware with your disk. > > > > > > > > > On my SSD Samsung EVO 840 on Lx 3.0 i got stable results: > > > > > > [root@lazur tpg]# hdparm -t /dev/sda > > > > > > /dev/sda: > > > Timing buffered disk reads: 762 MB in 3.01 seconds = 253.56 MB/sec > > > [root@lazur tpg]# hdparm -t /dev/sda > > > > > > /dev/sda: > > > Timing buffered disk reads: 778 MB in 3.00 seconds = 259.29 MB/sec > > > [root@lazur tpg]# hdparm -t /dev/sda > > > > > > /dev/sda: > > > Timing buffered disk reads: 778 MB in 3.01 seconds = 258.63 MB/sec > > > > > > > > > > > > > > > _______________________________________________ > > > OM-Cooker mailing list > > > [email protected] > > > http://ml.openmandriva.org/mailman/listinfo/om-cooker_ml.openmandriva.org > > > _______________________________________________ OM-Cooker mailing list [email protected] http://ml.openmandriva.org/mailman/listinfo/om-cooker_ml.openmandriva.org
