diff for duplicates of <1675190812.20090116174603@emcraft.com> diff --git a/a/1.txt b/N1/1.txt index d149be2..6a77d86 100644 --- a/a/1.txt +++ b/N1/1.txt @@ -1,5 +1,4 @@ -\r -Hello Cheng, +=0D=0AHello Cheng, On Friday, January 16, 2009 you wrote: @@ -8,47 +7,43 @@ On Friday, January 16, 2009 you wrote: Of course. We did benchmarking using the Xdd tool like follows: -# xdd -op write -kbytes $kbytes -reqsize $reqsize -dio-passes 2 –verbose -target $target_device +# xdd -op write -kbytes $kbytes -reqsize $reqsize -dio-passes 2 =E2=80=93ve= +rbose -target $target_device where -$kbytes = data disks * size of disk -$reqsize= data disks * chunk size -$target_device = /dev/md0 +$kbytes =3D data disks * size of disk +$reqsize=3D data disks * chunk size +$target_device =3D /dev/md0 - This way we did write of full array size, and thus achieved the + This way we did write of full array size, and thus achieved the=20 maximum performance. - The test cases were RAID-6 built on the top of 14 S-ATA drives -connected to 2 LSI cards (7+7) inserted into the 800 MHz Katmai board + The test cases were RAID-6 built on the top of 14 S-ATA drives=20 +connected to 2 LSI cards (7+7) inserted into the 800 MHz Katmai board=20 (based on ppc440spe) equipped with 4GB of 800 MHz DRAM . - Here are the results (Psw - write throughput with s/w RAID-6; Phw - + Here are the results (Psw - write throughput with s/w RAID-6; Phw -=20 write throughput with the h/w accelerated RAID-6): - PAGE_SIZE=4KB, chunk=64/128/256 KB - Psw = 71/72/74 MBps - Phw = 128/136/139 MBps + PAGE_SIZE=3D4KB, chunk=3D64/128/256 KB + Psw =3D 71/72/74 MBps + Phw =3D 128/136/139 MBps - PAGE_SIZE=16KB, chunk=256/512/1024 KB - Psw = 81/81/82 MBps - Phw = 205/244/239 MBps + PAGE_SIZE=3D16KB, chunk=3D256/512/1024 KB + Psw =3D 81/81/82 MBps + Phw =3D 205/244/239 MBps - PAGE_SIZE=64KB, chunk=1024/2048/4096 KB - Psw = 84/84/85 MBps - Phw = 258/253/258 MBps + PAGE_SIZE=3D64KB, chunk=3D1024/2048/4096 KB + Psw =3D 84/84/85 MBps + Phw =3D 258/253/258 MBps - PAGE_SIZE=256KB, chunk=4096/8192/16384 KB - Psw = 81/83/83 MBps - Phw = 288/275/274 MBps + PAGE_SIZE=3D256KB, chunk=3D4096/8192/16384 KB + Psw =3D 81/83/83 MBps + Phw =3D 288/275/274 MBps Regards, Yuri -- Yuri Tikhonov, Senior Software Engineer Emcraft Systems, www.emcraft.com - --- -To unsubscribe from this list: send the line "unsubscribe linux-raid" in -the body of a message to majordomo@vger.kernel.org -More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/a/content_digest b/N1/content_digest index 0b3d84f..ff662f1 100644 --- a/a/content_digest +++ b/N1/content_digest @@ -3,19 +3,18 @@ "ref\0e9c3a7c20901151421o69522f71rfe6d7d9621de47eb@mail.gmail.com\0" "ref\091b13c310901151707x48b1ef8av1609c3a622c19565@mail.gmail.com\0" "From\0Yuri Tikhonov <yur@emcraft.com>\0" - "Subject\0Re[2]: [PATCH 07/11] md: rewrite handle_stripe_dirtying6 in asynchronous way\0" + "Subject\0Re[2]: [PATCH 07/11] md: rewrite handle_stripe_dirtying6 in asynchronous way\0" "Date\0Fri, 16 Jan 2009 17:46:03 +0300\0" "To\0Cheng Renquan <crquan@gmail.com>\0" - "Cc\0Dan Williams <dan.j.williams@intel.com>" + "Cc\0wd@denx.de" + dzu@denx.de linux-raid@vger.kernel.org linuxppc-dev@ozlabs.org - dzu@denx.de - wd@denx.de - " yanok@emcraft.com\0" + yanok@emcraft.com + " Dan Williams <dan.j.williams@intel.com>\0" "\00:1\0" "b\0" - "\r\n" - "Hello Cheng,\n" + "=0D=0AHello Cheng,\n" "\n" "On Friday, January 16, 2009 you wrote:\n" "\n" @@ -24,49 +23,45 @@ "\n" " Of course. We did benchmarking using the Xdd tool like follows:\n" "\n" - "# xdd -op write -kbytes $kbytes -reqsize $reqsize -dio-passes 2 \342\200\223verbose -target $target_device\n" + "# xdd -op write -kbytes $kbytes -reqsize $reqsize -dio-passes 2 =E2=80=93ve=\n" + "rbose -target $target_device\n" "\n" " where\n" "\n" - "$kbytes = data disks * size of disk\n" - "$reqsize= data disks * chunk size\n" - "$target_device = /dev/md0\n" + "$kbytes =3D data disks * size of disk\n" + "$reqsize=3D data disks * chunk size\n" + "$target_device =3D /dev/md0\n" "\n" - " This way we did write of full array size, and thus achieved the \n" + " This way we did write of full array size, and thus achieved the=20\n" "maximum performance.\n" "\n" - " The test cases were RAID-6 built on the top of 14 S-ATA drives \n" - "connected to 2 LSI cards (7+7) inserted into the 800 MHz Katmai board \n" + " The test cases were RAID-6 built on the top of 14 S-ATA drives=20\n" + "connected to 2 LSI cards (7+7) inserted into the 800 MHz Katmai board=20\n" "(based on ppc440spe) equipped with 4GB of 800 MHz DRAM .\n" "\n" - " Here are the results (Psw - write throughput with s/w RAID-6; Phw - \n" + " Here are the results (Psw - write throughput with s/w RAID-6; Phw -=20\n" "write throughput with the h/w accelerated RAID-6):\n" "\n" - " PAGE_SIZE=4KB, chunk=64/128/256 KB\n" - " Psw = 71/72/74 MBps\n" - " Phw = 128/136/139 MBps\n" + " PAGE_SIZE=3D4KB, chunk=3D64/128/256 KB\n" + " Psw =3D 71/72/74 MBps\n" + " Phw =3D 128/136/139 MBps\n" "\n" - " PAGE_SIZE=16KB, chunk=256/512/1024 KB\n" - " Psw = 81/81/82 MBps\n" - " Phw = 205/244/239 MBps\n" + " PAGE_SIZE=3D16KB, chunk=3D256/512/1024 KB\n" + " Psw =3D 81/81/82 MBps\n" + " Phw =3D 205/244/239 MBps\n" "\n" - " PAGE_SIZE=64KB, chunk=1024/2048/4096 KB\n" - " Psw = 84/84/85 MBps\n" - " Phw = 258/253/258 MBps\n" + " PAGE_SIZE=3D64KB, chunk=3D1024/2048/4096 KB\n" + " Psw =3D 84/84/85 MBps\n" + " Phw =3D 258/253/258 MBps\n" "\n" - " PAGE_SIZE=256KB, chunk=4096/8192/16384 KB\n" - " Psw = 81/83/83 MBps\n" - " Phw = 288/275/274 MBps\n" + " PAGE_SIZE=3D256KB, chunk=3D4096/8192/16384 KB\n" + " Psw =3D 81/83/83 MBps\n" + " Phw =3D 288/275/274 MBps\n" "\n" " Regards, Yuri\n" "\n" " --\n" " Yuri Tikhonov, Senior Software Engineer\n" - " Emcraft Systems, www.emcraft.com\n" - "\n" - "--\n" - "To unsubscribe from this list: send the line \"unsubscribe linux-raid\" in\n" - "the body of a message to majordomo@vger.kernel.org\n" - More majordomo info at http://vger.kernel.org/majordomo-info.html + Emcraft Systems, www.emcraft.com -b396a53ac54530e94702b65cd2ed40df267641042407d9ad9f9a1c9d86f549a5 +1d2913e4dbc2fd356436b43657b2d2e688cca24d611805ad95c4f251421087c1
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