HomeFreeBSD

Enable indirect segment I/Os by default in the Xen blkfront driver when

Description

Enable indirect segment I/Os by default in the Xen blkfront driver when
running on EC2. Due to improvements in EC2, the performance penalty which
was present on some EC2 instances no longer exists, and enabling this
feature now consistently yields ~20% higher throughput with equal or lower
latency.

Reverts: r286063
Approved by: re (gjb)
MFC after: 2 weeks
Relnotes: Improved disk throughput on EC2

Details

Provenance
cpercivaAuthored on
Parents
rS302287: Fixed FreeBSD/mips MALTA support for QEMU
Branches
Unknown
Tags
Unknown