Date: Tue, 12 Feb 2013 14:17:24 +0100 From: CeDeROM <cederom@tlen.pl> To: Christian Gusenbauer <c47g@gmx.at> Cc: =?UTF-8?Q?Bernhard_Fr=C3=B6hlich?= <decke@freebsd.org>, freebsd-emulation@freebsd.org, freebsd-stable@freebsd.org Subject: Re: 9.1 AMD64 multitasking efficiency low Message-ID: <CAFYkXj=%2B1bzwiZ3P9tLa8o0bfE8V47mdQyr3%2B0RoJSk=8jqvqQ@mail.gmail.com> In-Reply-To: <201302121404.28342.c47g@gmx.at> References: <CAFYkXjkACs=2RaCb_BaoNT6PM%2B5gkQSGoKP5G4bR_284v_Eoig@mail.gmail.com> <CAFYkXjk-k%2BkscQs3JZO-CHGuYwDaXBGWv-rLuuaXrewbgGVdKQ@mail.gmail.com> <CAFYkXjkQMsEP5kgwOv324adGAVXa6n_6L3_aGqJnrpBrWFKRsw@mail.gmail.com> <201302121404.28342.c47g@gmx.at>
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On Tue, Feb 12, 2013 at 2:04 PM, Christian Gusenbauer <c47g@gmx.at> wrote: > Maybe it's hardware related? I experience the same slowness as you do as soon > as I copy more than a few MB of data *on the same drive*. (...) Hello Christian :-) Thank you for your feedback! :-) There was no problem today to copy from internal ufs2 to external ufs2, but I have tried to copy back from external (ufs2) to internal (ufs2) and guess what - I got the terrible slowdown!!! Just when I hit Ctrl+C things get back to normal right away.. so the problem is with writing to the WDC SATA drive... Is it something wrong with the mass storage / ahci / sata driver? Yesterday I have switched the SATA from RAID to AHCI mode, but this seems to change nothing. Is it something wrong with the WDC drives? :-\ Internal drive: ada0 at ahcich0 bus 0 scbus0 target 0 lun 0 ada0: <WDC WD5000BEVT-00A03T0 01.01A01> ATA-8 SATA 2.x device ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada0: Command Queueing enabled ada0: 476940MB (976773168 512 byte sectors: 16H 63S/T 16383C) ada0: Previously was known as ad4 External drive: da0 at umass-sim0 bus 0 scbus5 target 0 lun 0 da0: <FUJITSU MJA2320BH G2 > Fixed Direct Access SCSI-2 device da0: 40.000MB/s transfers da0: 305245MB (625142448 512 byte sectors: 255H 63S/T 38913C) Thank you!! :-) Tomek -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
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