Date: Mon, 19 May 2008 12:31:42 +0200 From: Daniel Ponticello <daniel@skytek.it> To: Shunsuke SHINOMIYA <shino@fornext.org> Cc: freebsd-stable@freebsd.org Subject: Re: Disk access/MPT under ESX3.5 Message-ID: <4831570E.8050202@skytek.it> In-Reply-To: <20080519181606.897C.A2D40D1E@fornext.org> References: <20080519130031.8978.A2D40D1E@fornext.org> <48314227.3080101@skytek.it> <20080519181606.897C.A2D40D1E@fornext.org>
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Much better: endevor# camcontrol negotiate 0:0 -W 16 -O 127 -R 40.000 Current Parameters: (pass0:mpt0:0:0:0): sync parameter: 8 (pass0:mpt0:0:0:0): frequency: 160.000MHz (pass0:mpt0:0:0:0): offset: 127 (pass0:mpt0:0:0:0): bus width: 16 bits (pass0:mpt0:0:0:0): disconnection is enabled (pass0:mpt0:0:0:0): tagged queueing is enabled endevor# camcontrol inquiry da0 pass0: <VMware Virtual disk 1.0> Fixed Direct Access SCSI-2 device pass0: 80.000MB/s transfers (40.000MHz, offset 127, 16bit), Command Queueing Enabled endevor# dd if=/dev/zero of=/var/tmp/dead.file bs=1024k count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 20.364577 secs (51490193 bytes/sec) endevor# dd if=/dev/zero of=/var/tmp/dead.file bs=1024k count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 11.525560 secs (90978311 bytes/sec) endevor# dd if=/dev/zero of=/var/tmp/dead.file bs=1024k count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 11.833996 secs (88607094 bytes/sec) endevor# dd if=/dev/zero of=/var/tmp/dead.file bs=1024k count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 12.779979 secs (82048335 bytes/sec) endevor# dd if=/dev/zero of=/var/tmp/dead.file bs=1024k count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 11.812926 secs (88765137 bytes/sec) Also CPU system load is lower: 40% instead of 70% on dual cpu, and 23% instead of 50% on quad cpu. Still not as fast as debian, but really really usable now =) how i can make it mantain these settings at boot? Also, do you know why the first dd was slower? Thanks, Daniel Shunsuke SHINOMIYA ha scritto: > Hello, Daniel > > Can you execute camcontrol with some parameters again? > For example, `camcontrol negotiate 0:0 -W 16 -O 127 -R 40.000'. > > -- WBR, Cordiali Saluti, Daniel Ponticello, VP of Engineering Network Coordination Centre of Skytek --- - For further information about our services: - Please visit our website at http://www.Skytek.it ---
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