thunderx nic performance improvements
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| linux (Ubuntu) |
Fix Released
|
Medium
|
dann frazier | ||
| Xenial |
Fix Released
|
Medium
|
dann frazier | ||
Bug Description
Two patches have landed upstream that improve thunderx nic performance:
commit b6e4038262bc933
Merge: 9bd160b 1d36879
Author: David S. Miller <email address hidden>
Date: Mon Mar 14 12:33:37 2016 -0400
Merge branch 'thunderx-perf'
Sunil Goutham says:
===
net: thunderx: Performance enhancement changes
Below patches attempts to improve performance by reducing
no of atomic operations while allocating new receive buffers
and reducing cache misses by adjusting nicvf structure elements.
Changes from v1:
No changes, resubmitting a fresh as per David's suggestion.
===
Signed-off-by: David S. Miller <email address hidden>
commit 1d368790bc2d411
Author: Sunil Goutham <email address hidden>
Date: Mon Mar 14 16:36:15 2016 +0530
net: thunderx: Adjust nicvf structure to reduce cache misses
Adjusted nicvf structure such that all elements used in hot
path like napi, xmit e.t.c fall into same cache line. This reduced
no of cache misses and resulted in ~2% increase in no of packets
handled on a core.
Also modified elements with :1 notation to boolean, to be
consistent with other element definitions.
Signed-off-by: Sunil Goutham <email address hidden>
Signed-off-by: David S. Miller <email address hidden>
commit 5c2e26f6f674ee9
Author: Sunil Goutham <email address hidden>
Date: Mon Mar 14 16:36:14 2016 +0530
net: thunderx: Set recevie buffer page usage count in bulk
Instead of calling get_page() for every receive buffer carved out
of page, set page's usage count at the end, to reduce no of atomic
calls.
Signed-off-by: Sunil Goutham <email address hidden>
Signed-off-by: David S. Miller <email address hidden>
CVE References
| Changed in linux (Ubuntu Xenial): | |
| status: | In Progress → Fix Committed |
| Launchpad Janitor (janitor) wrote | #1 |
| Changed in linux (Ubuntu Xenial): | |
| status: | Fix Committed → Fix Released |
This bug was fixed in the package linux - 4.4.0-21.37
---------------
linux (4.4.0-21.37) xenial; urgency=low
[ Tim Gardner ]
* Release Tracking Bug
- LP: #1571791
* linux: MokSBState is ignored (LP: #1571691)
- SAUCE: (noup) MODSIGN: Import certificates from UEFI Secure Boot
- SAUCE: (noup) efi: Disable secure boot if shim is in insecure mode
- SAUCE: (noup) Display MOKSBState when disabled
linux (4.4.0-20.36) xenial; urgency=low
[ Tim Gardner ]
* Release Tracking Bug
- LP: #1571069
* sysfs mount failure during stateful lxd snapshots (LP: #1570906)
- SAUCE: kernfs: Do not match superblock in another user namespace when
mounting
* Kernel Panic in Ubuntu 16.04 netboot installer (LP: #1570441)
- x86/topology: Fix logical package mapping
- x86/topology: Fix Intel HT disable
- x86/topology: Use total_cpus not nr_cpu_ids for logical packages
- xen/apic: Provide Xen-specific version of cpu_present_
- x86/topology: Fix AMD core count
* [regression]: Failed to call clock_adjtime(): Invalid argument
(LP: #1566465)
- ntp: Fix ADJ_SETOFFSET being used w/ ADJ_NANO
linux (4.4.0-19.35) xenial; urgency=low
[ Tim Gardner ]
* Release Tracking Bug
- LP: #1570348
* CVE-2016-2847 (LP: #1554260)
- pipe: limit the per-user amount of pages allocated in pipes
* xenial kernel crash on HP BL460c G7 (qla24xx problem?) (LP: #1554003)
- SAUCE: (noup) qla2xxx: Add irq affinity notification V2
* arm64: guest hangs when ntpd is running (LP: #1549494)
- SAUCE: (noup) KVM: arm/arm64: Handle forward time correction gracefully
* linux: Enforce signed module loading when UEFI secure boot (LP: #1566221)
- [Config] CONFIG_
* s390/cpumf: Fix lpp detection (LP: #1555344)
- s390/facilities: use stfl mnemonic instead of insn magic
- s390/facilities: always use lowcore's stfle field for storing facility bits
- s390/cpumf: Fix lpp detection
* s390x kernel image needs weightwatchers (LP: #1536245)
- [Config] s390x: Use compressed kernel bzImage
* Surelock GA2 SP1: surelock02p05: Not seeing sgX devices for LUNs after
upgrading to Ubuntu 16.04 (LP: #1567581)
- Revert "UBUNTU: SAUCE: (noup) powerpc/pci: Assign fixed PHB number based on
device-tree properties"
* Backport upstream bugfixes to ubuntu-16.04 (LP: #1555765)
- cpufreq: powernv: Define per_cpu chip pointer to optimize hot-path
- Revert "cpufreq: postfix policy directory with the first CPU in related_cpus"
- cpufreq: powernv: Add sysfs attributes to show throttle stats
* systemd-
- [Config] Add ib_iser to generic inclusion list
* thunderx nic performance improvements (LP: #1567093)
- net: thunderx: Set recevie buffer page usage count in bulk
- net: thunderx: Adjust nicvf structure to reduce cache misses
* fixes for thunderx nic in multiqueue mode (LP: #1567091)
- net: thunderx: Fix for multiqset not configured upon interface toggle
- net: thunderx: Fix for HW TSO not enabled for secondary qsets
- net: thund...