X-Git-Url: https://git.decadent.org.uk/gitweb/?p=kernel-news-talk.git;a=blobdiff_plain;f=index.html;h=a21b55937a74646cf9df22bd99ae3aae81b93803;hp=9e99a51a015bd62246401b74a3fc0340fd41ac61;hb=52544564a04e423767114258d141c6342cb237f8;hpb=61fa05974dac42b20d57f734218f5725dc66abdc
diff --git a/index.html b/index.html
index 9e99a51..a21b559 100644
--- a/index.html
+++ b/index.html
@@ -155,7 +155,7 @@
unnamed temporary file on that filesystem
- As with tmpfile(), the file disppears on
+ As with tmpfile(), the file disappears on
last close()
@@ -284,12 +284,11 @@
and ebtables
- All require a specific kernel module for each type of match
- and each possible action
+ All limited to single protocol, and need a kernel module for
+ each match type and each action
- Userland could only use the four protocol-specific APIs,
- although the internal netfilter API is more flexible
+ Kernel's internal netfilter API is more flexible
nftables exposes more of this flexibility, allowing userland
@@ -299,7 +298,7 @@
nftables userland tool uses this API and is already packaged
- Eventually, the old APIs will be removed and the old userland
+ Eventually, old APIs will be removed and old userland
tools must be ported to use nftables
@@ -343,7 +342,7 @@
but didn't support kernel running little-endian
- Linux 3.13 added little-endian kernel suport, along with new
+ Linux 3.13 added little-endian kernel support, along with new
userland ELF ABI variant - we call it ppc64el
@@ -380,6 +379,32 @@
+
+
Multiqueue block devices [3.16]
+
+ -
+ Each block device has a command queue (possibly shared with
+ other devices)
+
+ -
+ Queue may be partly implemented by hardware (NCQ) or only
+ in software
+
+ -
+ A single queue means initiation is serialised and completion
+ involves IPI - can be bottleneck for fast devices
+
+ -
+ High-end SSDs support multiple queues, but kernel needed changes
+ to use them
+
+ -
+ mtip32xx driver now supports multiqueue, but SCSI
+ drivers don't yet - may be backport-able?
+
+
+
+
Questions?