I am using iometer (http://www.iometer.org/) to test the IOPS from one of the vm. As for IOPS is more trying to test the performance of block, rather than real file transfer.
In my environment, I am using 10Gbe to make two gluster nodes be replicated. And I mount it to vm as a volume. I tested the performance both for SAS and SSD. This is my current result with iometer. Test ID Application Block Size (Bytes) Read/Write % Random/Sequential % I/O Performance Metrics iscsi-hdd iscsi-ssd Guster,HDD Gluster,SSD 1 Web File Server 4K 95%/5% 75%/25% IOPS 195.28 2400.63 208.50 646.75 2 Web File Server 8K 95%/5% 75%/25% IOPS 193.97 2225.73 179.89 649.93 3 Web File Server 64K 95%/5% 75%/25% IOPS 180.50 1055.05 158.28 402.15 4 Database Online Transaction Processing 8K 70%/30% 100%/0% IOPS 163.60 2415.90 132.13 308.46 5 Exchange Email 4K 67%/33% 100%/0% IOPS 167.03 2685.33 145.92 294.56 6 OS Drive 8K 70%/30% 100%/0% IOPS 163.60 2407.02 146.11 310.82 7 Decision Support System 1M 100%/0% 100%/0% IOPS 74.24 207.42 81.14 112.20 8 File Server 8K 90%/10% 75%/25% IOPS 191.20 2102.32 359.54 526.86 9 Video on Demand 512K 100%/0% 100%/0% IOPS 100.32 327.19 136.66 162.48 10 Traffic Simulation 8K 50%/50% 75%/25% IOPS 238.28 1923.91 301.05 297.70 11 Web Server Logging 8K 0%/100% 0%/100% IOPS 3488.47 3644.33 290.33 282.04 12 SQL Server Logging 64K 0%/100% 0%/100% IOPS 1423.29 1375.33 182.67 168.64 13 OS Paging 64K 90%/10% 0%/100% IOPS 1215.74 1211.01 381.17 355.99 14 Media Streaming 64K 98%/2% 0%/100% IOPS 1350.96 1365.22 457.28 455.49 The issue for GlusterFS I found is - It can not retain the nature of SSD and SAS, such as SAS is strong for sequential access. SSD is strong for random access. - In some case, especially for SSD, the performance is pretty bad. Thanks, Cong From: Donny Davis [mailto:do...@cloudspin.me] Sent: Thursday, January 15, 2015 10:27 AM To: Yue, Cong; users@ovirt.org Subject: RE: [ovirt-users] Performance issue for GlusterFS as the block storage for VMs Do you have any metrics to give an idea of the difference. I am using NFS right now, and I am migrating to Gluster. I have the gluster system up, and I see that it seems to provision disks faster than my NFS. I haven't used any real measurement tools to get actual metrics, this is all perceived. Do you have an operational gluster? Do what are you using right now? Donny D cloudspin.me From: users-boun...@ovirt.org<mailto:users-boun...@ovirt.org> [mailto:users-boun...@ovirt.org] On Behalf Of Yue, Cong Sent: Thursday, January 15, 2015 10:57 AM To: users@ovirt.org<mailto:users@ovirt.org> Subject: [ovirt-users] Performance issue for GlusterFS as the block storage for VMs Hi I have one question about whether GlusterFS is the suitable solution to be used as the block storage for VMs. The failure tolerant and scalability is good for GlusterFS, but in my test, it seems the iops is pretty bad. In some blog, it said, it is even with worse performance than normal NFS. Should I use iscsi+drbd for the block storage for VMs. Can somebody give some advice for this? Thanks, Cong ________________________________ This e-mail message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. If you are the intended recipient, please be advised that the content of this message is subject to access, review and disclosure by the sender's e-mail System Administrator. ________________________________ This e-mail message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. If you are the intended recipient, please be advised that the content of this message is subject to access, review and disclosure by the sender's e-mail System Administrator.
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