>> Can we use the queued io data as caches, >> io write will directly return and tell the guest the io is completed after >> the io is enqueued, >> better user experience for burst io, >> and io-read will firstly search the io queue, if matched data found, >> directly get the data from the queue, >> if not, then read the data from the disk or host page cache. >> Any ideas? > >Guest kernel already has a page cache that exactly does this, also keeping a >copy of guest request data in qemu may hurt the bandwidth in some cases. > You are right. Does the io merging in queue is worthy to be performed ?
Thanks, Zhang Haoyu >Fam
