Opened 13 years ago
Closed 10 years ago
#7943 closed defect (invalid)
VMM/Guest SMP: Very slow performance on over-commit
| Reported by: | Technologov | Owned by: | |
|---|---|---|---|
| Component: | VMM/HWACCM | Version: | VirtualBox 4.0.0 |
| Keywords: | Cc: | ||
| Guest type: | other | Host type: | other |
Description (last modified by )
Very slow performance when over-commit CPU.
Host = 1 CPU, Guest = 2 CPUs. (same happens with Host = 4 CPUs and guest with 8 CPUs)
Host: WinXP/32 and RHEL5/x64, Intel Core 2 Duo (2nd core disabled in BIOS), VBox 4.0.0
Guest: WinXP (problem happens even without GA)
Only one VM is running. XP boot takes longer than 20 minutes. I decided to kill VM.
-Technologov, 29.12.2010.
Attachments (1)
Change History (3)
by , 13 years ago
| Attachment: | Windows XP Unattended3-2010-12-15-09-00-34.log added |
|---|
comment:1 by , 13 years ago
Host: Win 7 x64 + Intel Core i7 2600K CPU + VBox 4.1.0_BETA1
Guest: Debian Linux 6.0 x64 + 8-way SMP
Guest workload: Compiling VirtualBox.
*Host* OS becomes extremely unresponsive, like soft-lockup effect.
$ kmk
Workaround is to limit task to available _physical_ cores:
$ kmk -j4
(Host OS no longer locks-up)
-Technologov
comment:2 by , 10 years ago
| Description: | modified (diff) |
|---|---|
| Resolution: | → invalid |
| Status: | new → closed |
You're not supposed to overcommit CPUs. Anyway, you probably already know that by now. Closing.
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