On Jan 13, 2014, at 8:59 PM, Mike Snitzer wrote: > On Mon, Jan 13 2014 at 9:30pm -0500, > Jonathan Brassow <jbrassow@xxxxxxxxxx> wrote: > >> dm-log-userspace: Allow mark requests to piggyback on flush requests >> >> In the cluster evironment, cluster write has poor performance. >> Because userspace_flush has to contact userspace program(cmirrord) >> in clear/mark/flush request. But both mark and flush requests >> require cmirrord to circle message to all the cluster nodes in each >> flush call. This behave is realy slow. So the idea is merging >> mark and flush request together to reduce the kernel-userspace-kernel >> time. Allow a new directive, "integrated_flush" that can be used to >> instruct the kernel log code to combine flush and mark requests when >> directed by userspace. Additionlly, flush requests are performed >> lazily when only clear requests exist. >> >> Signed-off-by: dongmao zhang <dmzhang@xxxxxxxx> >> Signed-off-by: Jonathan Brassow <jbrassow@xxxxxxxxxx> > > Hey Jon, > > Thanks for following through with this. Should it be attributed to > dongmao as the author? Yes. Thanks. brassow -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
