From c063172c23394db94320bf095f15f82999da321b Mon Sep 17 00:00:00 2001 From: dasl Date: Thu, 12 Jan 2017 11:28:46 -0800 Subject: [PATCH] MINOR: Fix error in design docs Author: dasl Reviewers: Gwen Shapira Closes #2357 from dasl-/trunk --- docs/design.html | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/design.html b/docs/design.html index 21584321ff6..aca0d26d5f8 100644 --- a/docs/design.html +++ b/docs/design.html @@ -121,7 +121,7 @@ path, only the final copy to the NIC buffer is needed.

We expect a common use case to be multiple consumers on a topic. Using the zero-copy optimization above, data is copied into pagecache exactly once and reused on each consumption instead of being stored in memory - and copied out to kernel space every time it is read. This allows messages to be consumed at a rate that approaches the limit of the network connection. + and copied out to user-space every time it is read. This allows messages to be consumed at a rate that approaches the limit of the network connection.

This combination of pagecache and sendfile means that on a Kafka cluster where the consumers are mostly caught up you will see no read activity on the disks whatsoever as they will be serving data entirely from cache.

@@ -584,4 +584,4 @@

-
\ No newline at end of file +