Re: [PERFORM] Dell Perc/6
Hello. I think I started that discussion. We ended up buying a Dell 2900 with PERC 6/i and 10 * 145GB SAS 3,5 15KRpm discs. 6 of the SAS discs are in a raid 10 for the database, 2 in a mirror for the wal and the last 2 in a mirror for the OS. We get 350MB/s writing and 380MB/s reading to/from the raid 10 area using dd. The OS is Ubuntu and the filesystem for the raid 10 is ext3. The box is still under testing, but we plan to set it in production this week. Regards, - Tore. On Feb 12, 2008, at 17:32 , Craig James wrote: Does anyone have performance info about the new Dell Perc/6 controllers? I found a long discussion (Dell vs HP) about the Perc/5, but nothing about Perc/6. What's under the covers? Here is the (abbreviated) info from Dell on this machine: PowerEdge 1950 IIIQuad Core Intel® Xeon® E5405, 2x6MB Cache, 2.0GHz, 1333MHz FSB Additional Processors Quad Core Intel® Xeon® E5405, 2x6MB Cache, 2.0GHz, 1333MHz FSB Memory8GB 667MHz (4x2GB), Dual Ranked DIMMs Hard Drive Configuration Integrated SAS/SATA RAID 5, PERC 6/i Integrated Thanks, Craig ---(end of broadcast)--- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [PERFORM] Dell Perc/6
On 13-Feb-08, at 5:02 AM, Tore Halset wrote: Hello. I think I started that discussion. We ended up buying a Dell 2900 with PERC 6/i and 10 * 145GB SAS 3,5 15KRpm discs. 6 of the SAS discs are in a raid 10 for the database, 2 in a mirror for the wal and the last 2 in a mirror for the OS. We get 350MB/s writing and 380MB/s reading to/from the raid 10 area using dd. The OS is Ubuntu and the filesystem for the raid 10 is ext3. Wow that's fantastic. Just to be sure, did you make sure that you read and wrote 2x memory to take the cache out of the measurement ? Dave ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [PERFORM] Dell Perc/6
On Feb 13, 2008 5:02 AM, Tore Halset [EMAIL PROTECTED] wrote: Hello. I think I started that discussion. We ended up buying a Dell 2900 with PERC 6/i and 10 * 145GB SAS 3,5 15KRpm discs. 6 of the SAS discs are in a raid 10 for the database, 2 in a mirror for the wal and the last 2 in a mirror for the OS. We get 350MB/s writing and 380MB/s reading to/from the raid 10 area using dd. The OS is Ubuntu and the filesystem for the raid 10 is ext3. Those are decent numbers. Can you do a bonnie++ run and post the results (specifically interested in seeks)? merlin ---(end of broadcast)--- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [PERFORM] Dell Perc/6
On Feb 13, 2008, at 12:06, Dave Cramer wrote: On 13-Feb-08, at 5:02 AM, Tore Halset wrote: Hello. I think I started that discussion. We ended up buying a Dell 2900 with PERC 6/i and 10 * 145GB SAS 3,5 15KRpm discs. 6 of the SAS discs are in a raid 10 for the database, 2 in a mirror for the wal and the last 2 in a mirror for the OS. We get 350MB/s writing and 380MB/s reading to/from the raid 10 area using dd. The OS is Ubuntu and the filesystem for the raid 10 is ext3. Wow that's fantastic. Just to be sure, did you make sure that you read and wrote 2x memory to take the cache out of the measurement ? Dave The box have 16GB of ram, but my original test file was only 25GB. Sorry. Going to 33GB lowered the numbers for writing. Here you have some samples. % sh -c dd if=/dev/zero of=bigfile bs=8k count=400 sync 3276800 bytes (33 GB) copied, 103.722 seconds, 316 MB/s 3276800 bytes (33 GB) copied, 99.669 seconds, 329 MB/s % time dd if=bigfile of=/dev/null bs=8k 3276800 bytes (33 GB) copied, 85.4235 seconds, 384 MB/s 3276800 bytes (33 GB) copied, 85.4628 seconds, 383 MB/s Regards, - Tore. ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [PERFORM] Dell Perc/6
On Feb 13, 2008, at 20:45, Tore Halset wrote: The box have 16GB of ram, but my original test file was only 25GB. Sorry. Going to 33GB lowered the numbers for writing. Here you have some samples. % sh -c dd if=/dev/zero of=bigfile bs=8k count=400 sync 3276800 bytes (33 GB) copied, 103.722 seconds, 316 MB/s 3276800 bytes (33 GB) copied, 99.669 seconds, 329 MB/s % time dd if=bigfile of=/dev/null bs=8k 3276800 bytes (33 GB) copied, 85.4235 seconds, 384 MB/s 3276800 bytes (33 GB) copied, 85.4628 seconds, 383 MB/s Regards, - Tore. And here are the bonnie++ numbers. I am a bonnie++ newbie so I ran it with no options. Version 1.03c --Sequential Output-- --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- MachineSize K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP harteigen32136M 83983 97 221757 40 106483 19 89603 97 268787 22 886.1 1 --Sequential Create-- Random Create -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 + +++ + +++ + +++ + +++ + +++ + +++ harteigen,32136M, 83983,97,221757,40,106483,19,89603,97,268787,22,886.1,1,16,+,+++,++ +++,+++,+,+++,+,+++,+,+++,+,+++ Regards, - Tore. ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [PERFORM] Dell Perc/6
On Tue, 12 Feb 2008, Craig James wrote: Does anyone have performance info about the new Dell Perc/6 controllers? I found a long discussion (Dell vs HP) about the Perc/5, but nothing about Perc/6. What's under the covers? The Perc/6i has an LSI Logic MegaRAID SAS 1078 chipset under the hood. I know the Linux drivers for the card seemed to stabilize around October, there's a good sized list of compatible distributions on LSI's site. FreeBSD support has some limitations but basically works. I haven't seen any benchmarks for the current version of the card yet. -- * Greg Smith [EMAIL PROTECTED] http://www.gregsmith.com Baltimore, MD ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
[PERFORM] Dell Perc/6
Does anyone have performance info about the new Dell Perc/6 controllers? I found a long discussion (Dell vs HP) about the Perc/5, but nothing about Perc/6. What's under the covers? Here is the (abbreviated) info from Dell on this machine: PowerEdge 1950 IIIQuad Core Intel® Xeon® E5405, 2x6MB Cache, 2.0GHz, 1333MHz FSB Additional Processors Quad Core Intel® Xeon® E5405, 2x6MB Cache, 2.0GHz, 1333MHz FSB Memory8GB 667MHz (4x2GB), Dual Ranked DIMMs Hard Drive Configuration Integrated SAS/SATA RAID 5, PERC 6/i Integrated Thanks, Craig ---(end of broadcast)--- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
