Bug 114135
| Summary: | LSI Megaraid(2) performance subpar in RHEL3, using RHEL3 kernel | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Jesse Keating <jkeating> | ||||
| Component: | kernel | Assignee: | Arjan van de Ven <arjanv> | ||||
| Status: | CLOSED ERRATA | QA Contact: | |||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3.0 | CC: | jch, petrides, riel | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2004-05-12 01:08:22 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 106771 | ||||||
| Attachments: |
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Created attachment 97197 [details]
Benchmarking results. Best if viewed with fixed-width font
The bugzilla form garbled the benchark output. I've attached it in a text
file. View w/ fixed-width font.
Looks like another dup of 104633, marking as such. *** This bug has been marked as a duplicate of 104633 *** An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2004-188.html Hello, we have the same problem here with the megaraid2 driver version 2.10.8.2-RH1 provided with the RHEL 3.0 update 4 (2.4.21-27.0.2 x86_64 SMP). Our platform is an Intel SE7525GP2 (Bios P07) motherboard with 2 dual Nocona coupled with a Intel SRCS16 Raid card (rebranded LSI 150-6 Board, BIOS G401,Firmware 713N ). The problem : We have configured two RAID 1 volumes, each consisting of 250GB SATA disks. When we made an installation with a big "/" partition (230GB), it completed correctly but just after the first reboot, some random files have been corrupted. FSCK complain that the system wasn't shutdown correctly and run endlessly because it found errors. It is always reproductible. Using a small partition, 8GB in our test , seems to "solve" the problem. If you need more information let me know. please ignore my last post it's related to #141360. Multiple tab browsing error, I'm sorry. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1) Gecko/20031114 Description of problem: Disk I/O performance, as reported by tiobench and bonnie++, is subpar in RHEL3 when using an LSI 320-* raid card (megaraid or megaraid2 driver). In comparison, using the latest Fedora Core 1 kernel on the RHEL3 system greatly improves certian aspects of disk I/O. Using an Adaptec U320 raid card also improves performance. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Install/update RHEL3 2. Use either megaraid or megaraid2 module 3. Test disk I/O with bonnie++ or tiobench Actual Results: Disk I/O is slow, especially in the deletes and subsequently re-writes. Reading is rather slow as well. Expected Results: Disk I/O performance should be on par with similar cards, and SHOULD be faster or as fast as the free Fedora Core product. Additional info: Array is a 2 15Krpm u320 disk raid-1 Bonnie++ from latest errata RHEL3 kernel: Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP kickstation-178. 4G 6282 99 37427 28 9419 7 6373 98 21621 13 280.4 1 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 421 19 +++++ +++ 555 2 428 18 +++++ +++ 477 9 Bonnie++ with FC1 kernel: Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP kickstation-178. 4G 6151 98 30786 22 14692 7 6591 99 55606 12 537.1 1 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 700 29 +++++ +++ 1198 4 728 29 +++++ +++ 879 18 tiobench latest RHEL3 errata kernel: File Block Num Seq Read Rand Read Seq Write Rand Write Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%) ------- ------ ------- --- ----------- ----------- ----------- ----------- . 1792 4096 1 357.5 56.4% 70.83 9.06% 38.68 33.0% 2.144 0.68% . 1792 4096 2 436.0 75.0% 82.55 13.2% 37.48 45.8% 2.191 1.05% . 1792 4096 4 561.1 119.% 120.4 23.1% 36.94 64.2% 2.176 1.76% . 1792 4096 8 658.1 152.% 155.6 32.3% 25.53 51.4% 2.216 2.09% tiobench FC1 kernel: Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/sec File Block Num Seq Read Rand Read Seq Write Rand Write Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%) ------- ------ ------- --- ----------- ----------- ----------- ----------- . 1792 4096 1 865.5 100.% 695.9 89.0% 29.84 24.8% 2.233 0.85% . 1792 4096 2 995.3 142.% 854.7 136.% 30.65 35.0% 2.244 1.22% . 1792 4096 4 1137. 203.% 997.3 191.% 31.03 49.5% 2.258 1.83% . 1792 4096 8 882.3 174.% 16.16 3.36% 31.41 58.5% 2.291 2.12% bonnie++ with Adaptec 2200S card RHEL3 kernel: Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP kickstation-178. 4G 6283 99 39262 29 13733 7 6567 99 48733 13 386.1 1 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 433 19 +++++ +++ 671 3 447 20 +++++ +++ 533 11 tiobench adaptec RHEL3 kernel Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/sec File Block Num Seq Read Rand Read Seq Write Rand Write Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%) ------- ------ ------- --- ----------- ----------- ----------- ----------- . 1792 4096 1 895.6 99.9% 688.0 88.0% 39.61 34.2% 3.486 1.11% . 1792 4096 2 1099. 137.% 847.1 108.% 38.86 49.7% 3.639 1.63% . 1792 4096 4 1278. 196.% 996.4 170.% 33.86 61.0% 3.657 2.73% . 1792 4096 8 1383. 232.% 1055. 185.% 31.73 67.1% 3.653 3.39%