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Changes between Initial Version and Version 1 of Ticket #17746, comment 1

initial	v1
1		I also noticed this issue with Virtualbox 5.2.14. I have a couple of ~~servers running on Virtualbox and I have a script that configures~~ them all. The configuration can be pretty disk intensive on the computer. In Virtualbox 5.1.38, the script takes about 4 minutes to complete. With Virtualbox 5.2.14, it takes 12 minutes. This seems like a major performance regression in Virtualbox 5.2. I also have "Use Host I/O Cache" switched on. Even if I turn off this setting, the VMs are still slower than when I was running on 5.1.38 without "Use Host I/O Cache". I am guessing that this regression is caused by the "first milestone of the I/O stack redesign" that was introduced in 5.2.0.
	1	I also noticed this issue with Virtualbox 5.2.14. I have a couple of CentOS servers running on Virtualbox inside a Windows 10 host for testing purposes. I use a script to automatically configure them all. The configuration can be pretty disk intensive on the computer. In Virtualbox 5.1.38, the script takes about 4 minutes to complete. With Virtualbox 5.2.14, it takes 12 minutes. This seems like a major performance regression in Virtualbox 5.2. I also have "Use Host I/O Cache" switched on. Even if I turn off this setting, the VMs are still slower than when I was running on 5.1.38 without "Use Host I/O Cache". I am guessing that this regression is caused by the "first milestone of the I/O stack redesign" that was introduced in 5.2.0.