Re: [Qemu-devel] Evaluating Disk IO and Snapshots

2006-01-20 Thread Juergen Pfennig
Hi Andre you suggested ... While you are at it, have you considered using the LZO libraries instead of zlib for compression/decompression speed? Sure, it won't compress as much as zlib, but speed improvements should be noticeable. ... sorry. This is a misunderstanding. (1) I will not modi

Re: [Qemu-devel] Evaluating Disk IO and Snapshots

2006-01-19 Thread André Braga
On 1/19/06, Juergen Pfennig <[EMAIL PROTECTED]> wrote: > What I found is that qcow has poor performance. I wrote my own driver > (which is intended only for -snapshot) and see signifcant improvements. > A 300 MByte file copy (win2003 xcopy /e between two real drives) takes > 90 instead of 135 secon

[Qemu-devel] Evaluating Disk IO and Snapshots

2006-01-19 Thread Juergen Pfennig
Hi, THE FOLLOWING IS IMPORTANT (COMMENTS ARE WELCOME): I will modifiy monitor.c to implement a "save" command. That command will do: stop commit (rename the old vmstate file) savevm (from where it got loaded) The commands commit and savevm will be modified to give progress repor