kvm tuning guide
I wrote a short tuning guide for kvm, http://www.linux-kvm.org/page/Tuning_KVM. It should all be well known to the list, but a newbie is born every minute. Please review and expand!
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error compiling committee.c: too many arguments to function
Avi Kivity escreveu:
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but a newbie is born every minute.
Reporting in!
As a newbie in KVM, I really appreciate those efforts. Promise to help on docs when I realize that I know what I am doing. :) Thank you.
--
Leandro Quibem Magnabosco.
"The default, IDE, is highly supported by guests but may be slow, especially with disk arrays. If your guest supports it, use the virtio interface:" Avi,
what is the status of data integrity issues Chris Hellwig summarized some time ago?
Is it safe to recommend virtio to newbies already? Shouldn't SCSI
be safer (where applicable)?
nik
Quoted 13 lines · Avi Kivity
I wrote a short tuning guide for kvm,
http://www.linux-kvm.org/page/Tuning_KVM. It should all be well known to the list, but a newbie is born every minute. Please review and expand!Signature · 6 lines
error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
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------------------------------------- Nikola CIPRICH LinuxBox.cz, s.r.o. 28. rijna 168, 709 01 Ostrava tel.: +420 596 603 142 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: [email protected] -------------------------------------
Quoted 4 lines · Nikola Ciprich
"The default, IDE, is highly supported by guests but may be slow, especially with disk arrays. If your guest supports it, use the virtio interface:" Avi,
what is the status of data integrity issues Chris Hellwig summarized some time ago?
I don't know. Christoph?
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Is it safe to recommend virtio to newbies already?
I think so.
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Shouldn't SCSI
be safer (where applicable)?
SCSI suffers from being untested, and I think doesn't truly offer the parallelism it appears to.
Quoted 20 lines
nik
Quoted 14 lines · Avi Kivity
I wrote a short tuning guide for kvm,
http://www.linux-kvm.org/page/Tuning_KVM. It should all be well known to the list, but a newbie is born every minute. Please review and expand!Signature · 6 lines
error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
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Do not meddle in the internals of kernels, for they are subtle and quick to panic.
Quoted 7 lines · Avi Kivity
Quoted 4 lines · Nikola Ciprich
"The default, IDE, is highly supported by guests but may be slow, especially with disk arrays. If your guest supports it, use the virtio interface:" Avi,
what is the status of data integrity issues Chris Hellwig summarized some time ago?I don't know. Christoph?
On the qemu side everything is in git HEAD now, but I'm not sure about the qemu-0.11 release as I haven't really followed it.
For the guest kernel the virtio cache flush support is now in mainline (past-2.6.31). For the host kernel side about 2/3 of the fixes are now in mainline (past-2.6.31) with the others hopefully getting in this merge window.
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Is it safe to recommend virtio to newbies already?
I think so.
I wouldn't. At least not for people caring about their data. It will take a while to promote the guest side fixes to all the interesting guests. IDE has the major advantage that cache flush support has been around in the guest driver for a long time so we only need to fix the host side which is a lot easier.