These two patches are posted together because applying the 2nd exposes the bug fixed by the first. Here are the results of tests I made with various block sizes before deciding the 1MB really was the best balance (all tests were done on a paused 512MB domain, saving to local disk on a Lenovo T61 laptop) BS M:SS save image size ----- ---- --------------- 2048K - 0:56 476135451 1024K - 0:56 475090953 512k - 1:02 474564173 256k - 1:10 474303797 128k - 1:25 474176859 512 - 3:47 474085423 - the original I didn't bother testing sizes between 512 and 128k, as there was still significant improvement from 128k to 256k. -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list