On Wed, Aug 09, 2017 at 04:28:14PM +0530, Bhupinder Thakur wrote: > Hi Julien, > > Thanks for the testing. > > On 8 August 2017 at 21:29, Julien Grall <julien.gr...@arm.com> wrote: > > Hi Bhupinder, > > > > I gave another and I have a couple of comments. > > > > Booting Linux with earlycon enabled take quite a while. I can see the > > characters coming slower than on the minitel. It seems to be a bit better > > after switching off the bootconsole. Overall Linux is taking ~20 times to > > boot with pl011 vs HVC console. > > > > I do agree that pl011 is emulated and therefore you have to trap after each > > character. But 20 times sounds far too much. > > > I think this slowness could be due to ratelimiting of the pl011 events > in xenconosle. Currently, the rate limit is > set to 30 events per 200 msecs (see RATE_LIMIT_ALLOWANCE/RATE_LIMIT_PERIOD). > > I increased the rate limit to 600 events (30 * 20) per 200 msecs. With > this change, > I see that the the find command is running faster and smoother. > Earlier the find output would be jerky.
Please consider batching the events instead of bumping the limit. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
