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--- docs/libnbd.pod | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/docs/libnbd.pod b/docs/libnbd.pod index f299ef1..7cbb9cd 100644 --- a/docs/libnbd.pod +++ b/docs/libnbd.pod @@ -334,7 +334,30 @@ to prefetch. =back -=head1 MULTI-CONN +=head1 PERFORMANCE + +=head2 Issuing multiple in-flight requests + +NBD servers which properly implement the spec can handle multiple +requests in flight over the same connection at t...

This works, but there's no time saving and I'm still investigating whether it does what I think it does. Nevertheless I thought I would post it because it (probably) implements the idea I had last night outlined in: https://www.redhat.com/archives/libguestfs/2019-June/msg00010.html The meat of the change is patch 4. Patch 5 is an example which I would probably fold into patch 4 for

...--- > lib/handle.c | 32 ++++++++++++++++++++ > lib/internal.h | 7 +++++ > lib/socket.c | 22 +++++++++++--- > podwrapper.pl.in | 3 +- > 6 files changed, 177 insertions(+), 12 deletions(-) > > diff --git a/docs/libnbd.pod b/docs/libnbd.pod > index 7cbb9cd..ab74be3 100644 > --- a/docs/libnbd.pod > +++ b/docs/libnbd.pod > @@ -385,6 +385,79 @@ If you are issuing multiple in-flight requests (see above) and > limiting the number, then the limit should be applied to each > individual NBD connection. > > +=head2 Concurrent writer t...

...rator | 52 +++++++++++++++++++++++++++----- lib/handle.c | 32 ++++++++++++++++++++ lib/internal.h | 7 +++++ lib/socket.c | 22 +++++++++++--- podwrapper.pl.in | 3 +- 6 files changed, 177 insertions(+), 12 deletions(-) diff --git a/docs/libnbd.pod b/docs/libnbd.pod index 7cbb9cd..ab74be3 100644 --- a/docs/libnbd.pod +++ b/docs/libnbd.pod @@ -385,6 +385,79 @@ If you are issuing multiple in-flight requests (see above) and limiting the number, then the limit should be applied to each individual NBD connection. +=head2 Concurrent writer thread + +To achieve the maximum pos...