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Re: [MooseFS-Users] Linux vs FreeBSD
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From: <ba...@na...> - 2018-08-21 18:40:00
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Hi again! OK. I'v made test file size twice bigger and no changes. I'v launched dd several times and I have a stable results like this: Linux # dd if=/moosefs/mnt/random_test_data of=/dev/null bs=1G 155 857 747 968 bytes (156 GB, 145 GiB) copied, 595.506 s, 262 MB/s FreeBSD: # dd if=/moosefs/mnt/random_test_data of=/dev/null bs=1G 155 857 747 968 bytes transferred in 296.450686 secs (525 745 951 bytes/sec) Cluster consists of 3 chunk server each with 64 GB RAM. And Linux client is one of them. FreeBSD host has 48 GB RAM. All hosts have mtu 9000. WBR Alexander ----------------------------------------------------------------------------- From: Aleksander Wieliczko <aleksander.wieliczko@mo...> - 2018-08-21 10:35:48 Every thing is possible, but try execute test 5 times, than remove highest and lowest results and count average value from 3 results that left :) Good idea is to read file size twice big as your RAM amount. ----------------------------------------------------------------------------- >> Hi dear All ! >> >> >> As far as I can see MooseFS client on FreeBSD works faster then on Linux: >> >> # uname -a >> FreeBSD 11.1-RELEASE-p13 FreeBSD 11.1-RELEASE-p13 #0: Tue Aug 14 19:34:21 UTC 2018 ro...@am...:/usr/obj/usr/src/sys/GENERIC amd64 >> # dd if=/moosefs/mnt/random_test_data of=/dev/null bs=1G >> 77928873984 bytes transferred in 143.082525 secs (544642847 bytes/sec) >> >> vs >> >> # uname -a >> Linux 4.9.0-7-amd64 #1 SMP Debian 4.9.110-3+deb9u2 (2018-08-13) x86_64 GNU/Linux >> # dd if=/moosefs/mnt/random_test_data of=/dev/null bs=1G >> 77928873984 bytes (78 GB, 73 GiB) copied, 258.288 s, 302 MB/s >> >> >> All MooseFS involved hosts are connected via 10 Gigabit Ethernet. >> >> >> Am I right? Why!? >> >> >> WBR >> >> Alexander >> >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _________________________________________ >> moosefs-users mailing list >> moo...@li... >> https://lists.sourceforge.net/lists/listinfo/moosefs-users >> > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _________________________________________ > moosefs-users mailing list > moo...@li... > https://lists.sourceforge.net/lists/listinfo/moosefs-users -- С уважением, Badurls mailto:ba...@na... |
