Date: Sun, 22 Jan 2006 20:28:10 +0100 From: Attila Nagy <bra@fsn.hu> To: Scott Long <scottl@samsco.org> Cc: freebsd-current@freebsd.org Subject: Re: SCSI target mode LOR Message-ID: <43D3DCCA.50100@fsn.hu> In-Reply-To: <43D3D917.30200@samsco.org> References: <43D3AA14.9090800@fsn.hu> <43D3B806.4020006@samsco.org> <43D3C6DD.4090702@fsn.hu> <43D3D917.30200@samsco.org>
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Scott Long wrote:
>> BTW, will you work on CAM, target mode support, or 4G/MP safety of any
>> of the two?
> CAM: yes
> target mode: yes
> 4G/SMP: yes
Hmm. Is it christmas, or something? :)
This is absolutely great news! Do you have any deeper details?
BTW, this is what I got on 6-STABLE with two HP BL25p connected to each
other with a single FC loop:
target:
CPU states: 3.0% user, 0.0% nice, 59.9% system, 15.4% interrupt, 21.7%
idle
initiator:
dT: 0.502 flag_I 500000us sizeof 288 i -1
L(q) ops/s r/s kBps ms/r w/s kBps ms/w %busy Name
2 261 147 18869 6.7 114 14534 8.6 99.5| da1
2 265 149 19124 6.7 116 14789 8.6 100.9| da2
2 275 157 20144 6.3 118 15044 8.3 100.0| da3
2 273 155 19889 6.3 118 15044 8.4 100.0| da4
2 267 153 19634 6.4 114 14534 8.6 100.0| da5
2 277 157 20144 6.3 120 15299 8.3 100.7| da6
2 263 151 19379 6.6 112 14279 8.7 99.9| da7
2 267 153 19634 6.5 114 14534 8.7 100.2| da8
The machines have two Opteron 252, 8G of RAM (running with 4G because of
isp (I guess)) and a Qlogic 2312 dual port 2G FC adapter (only one port
utilized).
On the target I did 8 malloc backed RAM disks and shared them with
scsi_target. On the initiator, I do this (just blindly testing for now):
dd if=/dev/zero of=/dev/daX bs=1024k
dd if=/dev/daX of=/dev/zero bs=1024k
simultaneously for the 8 LUNs.
--
Attila Nagy e-mail: Attila.Nagy@fsn.hu
Free Software Network (FSN.HU) phone: +3630 306 6758
http://www.fsn.hu/
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