Dear Friends, I beg your pardon for such a newbie question But I would like to better understand how to improve the qcow performance
I was checking the qemu-img and it seems that the following parameters are the most relevant to optimise the performance, no? 'cache' is the cache mode used to write the output disk image, the valid options are: 'none', 'writeback' (default, except for convert), 'writethrough', 'directsync' and 'unsafe' (default for convert) Should I infer that directsync means bypass all the stack and write directly to the disk? 'src_cache' is the cache mode used to read input disk images, the valid options are the same as for the 'cache' option I didn`t follow where should I look to check the 'cache' options :`( I guess that using smaller files is more performance due to the reduced number of metadata to handle? In any case, I saw the qemu-io command and I plan to stress test it Thank you very much/Kind Regards, Geraldo Netto site: http://exdev.sf.net github: https://github.com/geraldo-netto linkedin: https://www.linkedin.com/in/geraldonetto facebook: https://web.facebook.com/geraldo.netto.161