![]() VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Oracle ensures the product always meets professional quality criteria. VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. Presently, VirtualBox runs on Windows, Linux, macOS, and Solaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, 7, 8, Windows 10 and Windows 11), DOS/Windows 3.x, Linux (2.4, 2.6, 3.x, 4.x, 5.x and 6.x), Solaris and OpenSolaris, OS/2, OpenBSD, NetBSD and FreeBSD. The same virtual machines used under my 32 bit installation worked like a charm. The speed of the whole system has increased - but running Virtual-Box guests is a pain. See " About VirtualBox" for an introduction. All works fine, but VirtualBox seems to be quite slower. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 3. VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. VM VirtualBox, its high performance, cross-platform virtualization software. ![]() Oracle today released a significant new version of Oracle Oracle today released a 6.1 maintenance release which improves stability and fixes regressions. Oracle today released a 7.0 maintenance release which improves stability and fixes regressions. So my VMs are now usable under v7.0.12 even though the write performance is still lousy.Looking for a new challenge? We're hiring a VirtualBox Principal Software Developer (Germany, UK, US, Romania and other locations). With the NAT adapter, the read performance was the same as the Host performance at 114 MB/s. In that test (paravirtualized driver + bridged mode) however, read performance was still abysmal at 0.428 MB/s. So I tried that with the previous Intel PRO/1000 MT Desktop adapter type, and my file write performance increased to 2.5 MB/s or approx the same as my test using a paravirtualized adapter type. One of the posts said the problem disappeared when using a NAT adapter instead of a Bridged Adapter. The common issue I see is that it occurs with VBox bridged adapters and Intel physical adapters on the Host. Some issues are for LAN connections and some are for WAN connections. These seem to occur with many different Host and Guest operating systems. It came up with numerous issues related to very slow network transfer speeds with VBox v7.0.x going back to June. I did an advanced search this morning across all forums for: Searched query: +slow +network Win7 Pro General (40.19 KiB) Downloaded 8 times The Host is using a cifs mount to connect to the same folder on the NAS.ĭo I need to make some kind of Guest configuration change when moving from VBox v6 to v7? The read speed with the paravirtualized adapter is also much slower than the write speed.īoth Guests are using a Mapped Network Drive to connect to the NAS folder. ![]() This was a huge improvement, but still far below the Host transfer speed: So, I upgraded one of the two Guests from the Intel Adapter to a Paravirtualized Network Adapter. I copied the same file from the Host to the same NAS folder in 0.48 seconds:ĥ0331648 bytes (50 MB, 48 MiB) copied, 0.482932 s, 104 MB/sĬopying the file from the NAS to the Host produced a similar result:ĥ0331648 bytes (50 MB, 48 MiB) copied, 0.441563 s, 114 MB/s I ran DiskBench.exe on both Guests and had similar results - attempting to copy a 50 MB file from the Guest to a folder on the NAS resulted in only 3.8 MB copied after 4 hours. Initially both Guests were using a Intel PRO/1000 MT Desktop Adapter. When GA v7.0.13 was released, I upgraded to that version and still have the same problem. ![]() Intel NUC: 13th Gen Intel(R) Core(TM) i5-1340Pīoth Guests were running GA v7.0.10 because of the bug in GA v7.0.12 with Win7 and experiencing the issue. I have two Windows 7 Guests running on a Debian 12 Desktop PC.Īfter upgrading to VirtualBox 7, I am experiencing very slow file transfers from the Guests to a NAS.
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