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Operating Systems Linux Best tuning for qemu windows guest(windows 7) Post 303024946 by Linusolaradm1 on Saturday 20th of October 2018 07:51:30 PM
Old 10-20-2018
Best tuning for qemu windows guest(windows 7)

In your opinion,which is the best tuning for windows 7 guest?
I use
cpu: host


mem: at least 2G,better 4G


disk: this is the most important,without "unsafe" cache is really slow and apply a 1G "service pack" can take 3 hours,with unsafe is really fast,actually I use
cache=unsafe
io=threads
discard mode=unmap
detect zeroes=unmap


network:virtio


controller:all virtio


Any suggestion,opinions?Thanks
 

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ddi_dma_numwin(9F)					   Kernel Functions for Drivers 					ddi_dma_numwin(9F)

NAME
ddi_dma_numwin - retrieve number of DMA windows SYNOPSIS
#include <sys/ddi.h> #include <sys/sunddi.h> int ddi_dma_numwin(ddi_dma_handle_t handle, uint_t *nwinp); PARAMETERS
handle The DMA handle previously allocated by a call to ddi_dma_alloc_handle(9F). nwinp Upon a successful return, nwinp will contain the number of DMA windows for this object. INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). DESCRIPTION
ddi_dma_numwin() returns the number of DMA windows for a DMA object if partial resource allocation was permitted. RETURN VALUES
ddi_dma_numwin() returns: DDI_SUCCESS Successfully filled in the number of DMA windows. DDI_FAILURE DMA windows are not activated. CONTEXT
ddi_dma_numwin() can be called from user, kernel, or interrupt context. SEE ALSO
ddi_dma_addr_bind_handle(9F), ddi_dma_alloc_handle(9F), ddi_dma_buf_bind_handle(9F), ddi_dma_unbind_handle(9F) Writing Device Drivers SunOS 5.10 29 Sep 1994 ddi_dma_numwin(9F)
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