search for: host_affinity

.../run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh index 52b0f71..2e69ca8 100755 --- a/tools/virtio/ringtest/run-on-all.sh +++ b/tools/virtio/ringtest/run-on-all.sh @@ -3,10 +3,10 @@ #use last CPU for host. Why not the first? #many devices tend to use cpu0 by default so #it tends to be busier -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) +HOST_AFFINITY=$(lscpu -p=cpu | tail -1) #run command on all cpus -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); +for cpu in $(seq 0 $HOST_AFFINITY) do #Don't run guest and host on same CPU #It actually works ok...

.../run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh index 52b0f71..2e69ca8 100755 --- a/tools/virtio/ringtest/run-on-all.sh +++ b/tools/virtio/ringtest/run-on-all.sh @@ -3,10 +3,10 @@ #use last CPU for host. Why not the first? #many devices tend to use cpu0 by default so #it tends to be busier -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) +HOST_AFFINITY=$(lscpu -p=cpu | tail -1) #run command on all cpus -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); +for cpu in $(seq 0 $HOST_AFFINITY) do #Don't run guest and host on same CPU #It actually works ok...

.../run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh index 52b0f71..0177d50 100755 --- a/tools/virtio/ringtest/run-on-all.sh +++ b/tools/virtio/ringtest/run-on-all.sh @@ -3,10 +3,10 @@ #use last CPU for host. Why not the first? #many devices tend to use cpu0 by default so #it tends to be busier -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) +HOST_AFFINITY=$(lscpu -p | tail -n 1 | cut -d',' -f1) #run command on all cpus -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); +for cpu in $(seq 0 $HOST_AFFINITY) do #Don't run guest and host on same CPU...

.../run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh index 52b0f71..0177d50 100755 --- a/tools/virtio/ringtest/run-on-all.sh +++ b/tools/virtio/ringtest/run-on-all.sh @@ -3,10 +3,10 @@ #use last CPU for host. Why not the first? #many devices tend to use cpu0 by default so #it tends to be busier -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) +HOST_AFFINITY=$(lscpu -p | tail -n 1 | cut -d',' -f1) #run command on all cpus -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); +for cpu in $(seq 0 $HOST_AFFINITY) do #Don't run guest and host on same CPU...

.../run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh index 52b0f71..38ccfa3 100755 --- a/tools/virtio/ringtest/run-on-all.sh +++ b/tools/virtio/ringtest/run-on-all.sh @@ -3,10 +3,10 @@ #use last CPU for host. Why not the first? #many devices tend to use cpu0 by default so #it tends to be busier -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) +HOST_AFFINITY=$(($(grep -c processor /proc/cpuinfo) - 1)) #run command on all cpus -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); +for cpu in $(seq 0 $HOST_AFFINITY) do #Don't run guest and host on same CPU #It...

From: Halil Pasic <pasic at linux.vnet.ibm.com> Since ef1b144d ("tools/virtio/ringtest: fix run-on-all.sh to work without /dev/cpu") run-on-all.sh uses seq 0 $HOST_AFFINITY as the list of ids of the CPUs to run the command on (assuming ids of online CPUs are consecutive and start from 0), where $HOST_AFFINITY is the highest CPU id in the system previously determined using lscpu. This can fail on systems with offline CPUs. Instead let's use lscpu to determine the...

Having typical usage example in the README file is more convinient than in the git history... Signed-off-by: Mike Rapoport <rppt at linux.vnet.ibm.com> --- tools/virtio/ringtest/README | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/virtio/ringtest/README b/tools/virtio/ringtest/README index 34e94c4..d83707a 100644 --- a/tools/virtio/ringtest/README +++

Having typical usage example in the README file is more convinient than in the git history... Signed-off-by: Mike Rapoport <rppt at linux.vnet.ibm.com> --- tools/virtio/ringtest/README | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/virtio/ringtest/README b/tools/virtio/ringtest/README index 34e94c4..d83707a 100644 --- a/tools/virtio/ringtest/README +++

...un-on-all.sh > index 52b0f71..38ccfa3 100755 > --- a/tools/virtio/ringtest/run-on-all.sh > +++ b/tools/virtio/ringtest/run-on-all.sh > @@ -3,10 +3,10 @@ > #use last CPU for host. Why not the first? > #many devices tend to use cpu0 by default so > #it tends to be busier > -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) > +HOST_AFFINITY=$(($(grep -c processor /proc/cpuinfo) - 1)) > > #run command on all cpus > -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); > +for cpu in $(seq 0 $HOST_AFFINITY) > do > #Don't r...

...un-on-all.sh > index 52b0f71..0177d50 100755 > --- a/tools/virtio/ringtest/run-on-all.sh > +++ b/tools/virtio/ringtest/run-on-all.sh > @@ -3,10 +3,10 @@ > #use last CPU for host. Why not the first? > #many devices tend to use cpu0 by default so > #it tends to be busier > -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) > +HOST_AFFINITY=$(lscpu -p | tail -n 1 | cut -d',' -f1) Shorter: lscpu -p=cpu | tail -1 Should be good enough for a test tool :) > > #run command on all cpus > -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'...

...un-on-all.sh > index 52b0f71..2e69ca8 100755 > --- a/tools/virtio/ringtest/run-on-all.sh > +++ b/tools/virtio/ringtest/run-on-all.sh > @@ -3,10 +3,10 @@ > #use last CPU for host. Why not the first? > #many devices tend to use cpu0 by default so > #it tends to be busier > -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) > +HOST_AFFINITY=$(lscpu -p=cpu | tail -1) > > #run command on all cpus > -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); > +for cpu in $(seq 0 $HOST_AFFINITY) > do > #Don't run guest and host o...

...ools/virtio/ringtest/run-on-all.sh > > > +++ b/tools/virtio/ringtest/run-on-all.sh > > > @@ -3,10 +3,10 @@ > > > #use last CPU for host. Why not the first? > > > #many devices tend to use cpu0 by default so > > > #it tends to be busier > > > -HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) > > > +HOST_AFFINITY=$(lscpu -p=cpu | tail -1) > > > > > > #run command on all cpus > > > -for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); > > > +for cpu in $(seq 0 $HOST_AFFINIT...

Michael, the following patches have all been posted in the past. I've collected them on top of your vhost branch -- please let me know whether this works for you. The following changes since commit 6bdf1e0efb04a1716373646cb6f35b73addca492: Makefile: drop -D__CHECK_ENDIAN__ from cflags (2016-12-16 00:13:43 +0200) are available in the git repository at:

Michael, the following patches have all been posted in the past. I've collected them on top of your vhost branch -- please let me know whether this works for you. The following changes since commit 6bdf1e0efb04a1716373646cb6f35b73addca492: Makefile: drop -D__CHECK_ENDIAN__ from cflags (2016-12-16 00:13:43 +0200) are available in the git repository at:

...st/run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh new file mode 100755 index 0000000..52b0f71 --- /dev/null +++ b/tools/virtio/ringtest/run-on-all.sh @@ -0,0 +1,24 @@ +#!/bin/sh + +#use last CPU for host. Why not the first? +#many devices tend to use cpu0 by default so +#it tends to be busier +HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) + +#run command on all cpus +for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); +do + #Don't run guest and host on same CPU + #It actually works ok if using signalling + if + (echo "$@" | grep -e "--sleep&quo...

...st/run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh new file mode 100755 index 0000000..52b0f71 --- /dev/null +++ b/tools/virtio/ringtest/run-on-all.sh @@ -0,0 +1,24 @@ +#!/bin/sh + +#use last CPU for host. Why not the first? +#many devices tend to use cpu0 by default so +#it tends to be busier +HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1) + +#run command on all cpus +for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n); +do + #Don't run guest and host on same CPU + #It actually works ok if using signalling + if + (echo "$@" | grep -e "--sleep&quo...