Re: Question about RAID controllers and hadoop
[cwimmer@hostname bonnie++-1.03e]$ ./bonnie++ -d . -s 5 -m P410 -f Writing intelligently...done Rewriting...done Reading intelligently...done start 'em...done...done...done... Create files in sequential order...done. Stat files in sequential order...done. Delete files in sequential order...done. Create files in random order...done. Stat files in random order...done. Delete files in random order...done. Version 1.03e --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 P410 5M 68392 12 21153 3 116423 4 216.8 0 --Sequential Create-- Random Create -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 22238 33 + +++ + +++ + +++ + +++ + +++ P410,5M,,,68392,12,21153,3,,,116423,4,216.8,0,16,22238,33,+,+++,+,+++,+,+++,+,+++,+,+++ On 8/11/11 5:15 PM, Mohit Anchlia mohitanch...@gmail.com wrote: On Thu, Aug 11, 2011 at 3:26 PM, Charles Wimmer cwim...@yahoo-inc.com wrote: We currently use P410s in 12 disk system. Each disk is set up as a RAID0 volume. Performance is at least as good as a bare disk. Can you please share what throughput you see with P410s? Are these SATA or SAS? On 8/11/11 3:23 PM, GOEKE, MATTHEW (AG/1000) matthew.go...@monsanto.com wrote: If I read that email chain correctly then they were referring to the classic JBOD vs multiple disks striped together conversation. The conversation that was started here is referring to JBOD vs 1 RAID 0 per disk and the effects of the raid controller on those independent raids. Matt -Original Message- From: Kai Voigt [mailto:k...@123.org] Sent: Thursday, August 11, 2011 5:17 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry But updated benchmark would be interesting to see. Kai Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000): My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it. Matt -Original Message- From: Bharath Mundlapudi [mailto:bharathw...@yahoo.com] Sent: Thursday, August 11, 2011 5:00 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD. -Bharath From: Koert Kuipers ko...@tresata.com To: common-user@hadoop.apache.org Sent: Thursday, August 11, 2011 2:50 PM Subject: Question about RAID controllers and hadoop Hello all, We are considering using low end HP proliant machines (DL160s and DL180s) for cluster nodes. However with these machines if you want to do more than 4 hard drives then HP puts in a P410 raid controller. We would configure the RAID controller to function as JBOD, by simply creating multiple RAID volumes with one disk. Does anyone have experience with this setup? Is it a good idea, or am i introducing a i/o bottleneck? Thanks for your help! Best, Koert This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited. All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of Viruses or other Malware. Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying this e-mail or any attachment. The information contained in this email may be subject to the export control laws and regulations of the United States, potentially including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all applicable U.S. export laws and regulations. -- Kai Voigt
Question about RAID controllers and hadoop
Hello all, We are considering using low end HP proliant machines (DL160s and DL180s) for cluster nodes. However with these machines if you want to do more than 4 hard drives then HP puts in a P410 raid controller. We would configure the RAID controller to function as JBOD, by simply creating multiple RAID volumes with one disk. Does anyone have experience with this setup? Is it a good idea, or am i introducing a i/o bottleneck? Thanks for your help! Best, Koert
Re: Question about RAID controllers and hadoop
True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD. -Bharath From: Koert Kuipers ko...@tresata.com To: common-user@hadoop.apache.org Sent: Thursday, August 11, 2011 2:50 PM Subject: Question about RAID controllers and hadoop Hello all, We are considering using low end HP proliant machines (DL160s and DL180s) for cluster nodes. However with these machines if you want to do more than 4 hard drives then HP puts in a P410 raid controller. We would configure the RAID controller to function as JBOD, by simply creating multiple RAID volumes with one disk. Does anyone have experience with this setup? Is it a good idea, or am i introducing a i/o bottleneck? Thanks for your help! Best, Koert
RE: Question about RAID controllers and hadoop
My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it. Matt -Original Message- From: Bharath Mundlapudi [mailto:bharathw...@yahoo.com] Sent: Thursday, August 11, 2011 5:00 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD. -Bharath From: Koert Kuipers ko...@tresata.com To: common-user@hadoop.apache.org Sent: Thursday, August 11, 2011 2:50 PM Subject: Question about RAID controllers and hadoop Hello all, We are considering using low end HP proliant machines (DL160s and DL180s) for cluster nodes. However with these machines if you want to do more than 4 hard drives then HP puts in a P410 raid controller. We would configure the RAID controller to function as JBOD, by simply creating multiple RAID volumes with one disk. Does anyone have experience with this setup? Is it a good idea, or am i introducing a i/o bottleneck? Thanks for your help! Best, Koert This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited. All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of Viruses or other Malware. Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying this e-mail or any attachment. The information contained in this email may be subject to the export control laws and regulations of the United States, potentially including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all applicable U.S. export laws and regulations.
Re: Question about RAID controllers and hadoop
Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry But updated benchmark would be interesting to see. Kai Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000): My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it. Matt -Original Message- From: Bharath Mundlapudi [mailto:bharathw...@yahoo.com] Sent: Thursday, August 11, 2011 5:00 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD. -Bharath From: Koert Kuipers ko...@tresata.com To: common-user@hadoop.apache.org Sent: Thursday, August 11, 2011 2:50 PM Subject: Question about RAID controllers and hadoop Hello all, We are considering using low end HP proliant machines (DL160s and DL180s) for cluster nodes. However with these machines if you want to do more than 4 hard drives then HP puts in a P410 raid controller. We would configure the RAID controller to function as JBOD, by simply creating multiple RAID volumes with one disk. Does anyone have experience with this setup? Is it a good idea, or am i introducing a i/o bottleneck? Thanks for your help! Best, Koert This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited. All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of Viruses or other Malware. Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying this e-mail or any attachment. The information contained in this email may be subject to the export control laws and regulations of the United States, potentially including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all applicable U.S. export laws and regulations. -- Kai Voigt k...@123.org
Re: Question about RAID controllers and hadoop
We currently use P410s in 12 disk system. Each disk is set up as a RAID0 volume. Performance is at least as good as a bare disk. On 8/11/11 3:23 PM, GOEKE, MATTHEW (AG/1000) matthew.go...@monsanto.com wrote: If I read that email chain correctly then they were referring to the classic JBOD vs multiple disks striped together conversation. The conversation that was started here is referring to JBOD vs 1 RAID 0 per disk and the effects of the raid controller on those independent raids. Matt -Original Message- From: Kai Voigt [mailto:k...@123.org] Sent: Thursday, August 11, 2011 5:17 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry But updated benchmark would be interesting to see. Kai Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000): My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it. Matt -Original Message- From: Bharath Mundlapudi [mailto:bharathw...@yahoo.com] Sent: Thursday, August 11, 2011 5:00 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD. -Bharath From: Koert Kuipers ko...@tresata.com To: common-user@hadoop.apache.org Sent: Thursday, August 11, 2011 2:50 PM Subject: Question about RAID controllers and hadoop Hello all, We are considering using low end HP proliant machines (DL160s and DL180s) for cluster nodes. However with these machines if you want to do more than 4 hard drives then HP puts in a P410 raid controller. We would configure the RAID controller to function as JBOD, by simply creating multiple RAID volumes with one disk. Does anyone have experience with this setup? Is it a good idea, or am i introducing a i/o bottleneck? Thanks for your help! Best, Koert This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited. All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of Viruses or other Malware. Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying this e-mail or any attachment. The information contained in this email may be subject to the export control laws and regulations of the United States, potentially including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all applicable U.S. export laws and regulations. -- Kai Voigt k...@123.org
Re: Question about RAID controllers and hadoop
Hey Charles, I was considering using 8 drives, each set as RAID0, so its good to hear such a setup is working for you. Best Koert On Thu, Aug 11, 2011 at 6:26 PM, Charles Wimmer cwim...@yahoo-inc.comwrote: We currently use P410s in 12 disk system. Each disk is set up as a RAID0 volume. Performance is at least as good as a bare disk. On 8/11/11 3:23 PM, GOEKE, MATTHEW (AG/1000) matthew.go...@monsanto.com wrote: If I read that email chain correctly then they were referring to the classic JBOD vs multiple disks striped together conversation. The conversation that was started here is referring to JBOD vs 1 RAID 0 per disk and the effects of the raid controller on those independent raids. Matt -Original Message- From: Kai Voigt [mailto:k...@123.org] Sent: Thursday, August 11, 2011 5:17 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry But updated benchmark would be interesting to see. Kai Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000): My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it. Matt -Original Message- From: Bharath Mundlapudi [mailto:bharathw...@yahoo.com] Sent: Thursday, August 11, 2011 5:00 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD. -Bharath From: Koert Kuipers ko...@tresata.com To: common-user@hadoop.apache.org Sent: Thursday, August 11, 2011 2:50 PM Subject: Question about RAID controllers and hadoop Hello all, We are considering using low end HP proliant machines (DL160s and DL180s) for cluster nodes. However with these machines if you want to do more than 4 hard drives then HP puts in a P410 raid controller. We would configure the RAID controller to function as JBOD, by simply creating multiple RAID volumes with one disk. Does anyone have experience with this setup? Is it a good idea, or am i introducing a i/o bottleneck? Thanks for your help! Best, Koert This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited. All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of Viruses or other Malware. Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying this e-mail or any attachment. The information contained in this email may be subject to the export control laws and regulations of the United States, potentially including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all applicable U.S. export laws and regulations. -- Kai Voigt k...@123.org
Re: Question about RAID controllers and hadoop
On Thu, Aug 11, 2011 at 3:26 PM, Charles Wimmer cwim...@yahoo-inc.com wrote: We currently use P410s in 12 disk system. Each disk is set up as a RAID0 volume. Performance is at least as good as a bare disk. Can you please share what throughput you see with P410s? Are these SATA or SAS? On 8/11/11 3:23 PM, GOEKE, MATTHEW (AG/1000) matthew.go...@monsanto.com wrote: If I read that email chain correctly then they were referring to the classic JBOD vs multiple disks striped together conversation. The conversation that was started here is referring to JBOD vs 1 RAID 0 per disk and the effects of the raid controller on those independent raids. Matt -Original Message- From: Kai Voigt [mailto:k...@123.org] Sent: Thursday, August 11, 2011 5:17 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry But updated benchmark would be interesting to see. Kai Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000): My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it. Matt -Original Message- From: Bharath Mundlapudi [mailto:bharathw...@yahoo.com] Sent: Thursday, August 11, 2011 5:00 PM To: common-user@hadoop.apache.org Subject: Re: Question about RAID controllers and hadoop True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD. -Bharath From: Koert Kuipers ko...@tresata.com To: common-user@hadoop.apache.org Sent: Thursday, August 11, 2011 2:50 PM Subject: Question about RAID controllers and hadoop Hello all, We are considering using low end HP proliant machines (DL160s and DL180s) for cluster nodes. However with these machines if you want to do more than 4 hard drives then HP puts in a P410 raid controller. We would configure the RAID controller to function as JBOD, by simply creating multiple RAID volumes with one disk. Does anyone have experience with this setup? Is it a good idea, or am i introducing a i/o bottleneck? Thanks for your help! Best, Koert This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited. All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of Viruses or other Malware. Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying this e-mail or any attachment. The information contained in this email may be subject to the export control laws and regulations of the United States, potentially including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all applicable U.S. export laws and regulations. -- Kai Voigt k...@123.org
