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Re: [PATCH] realtime-virtual-host profile: remove lapic advancement calculation
by Jaroslav Skarvada 22 Jul '20

22 Jul '20

Hi, thanks for the patch. It seems we can also drop the tuned-profiles-nfv-host-bin package from next RHELs, because it was used only for this calculation thanks & regards Jaroslav ----- Original Message ----- > Thanks for the patch Marcelo. I believe the tuned.spec file should also be > updated > now that qemu-kvm-tools-rhev package doesn't seem to be needed? > > On Tue, Jul 21, 2020 at 7:21 PM Marcelo Tosatti <mtosatti(a)redhat.com> wrote: > > > > > The LAPIC advancement improvement is minimal (3 or 4 us) and its > > calculation has shown to be problematic under certain > > scenarios (for example if qemu-kvm is not installed). > > > > Remove it. > > > > Signed-off-by: Marcelo Tosatti <mtosatti(a)redhat.com> > > > > diff --git > > a/profiles/realtime-virtual-host/find-lapictscdeadline-optimal.sh > > b/profiles/realtime-virtual-host/find-lapictscdeadline-optimal.sh > > deleted file mode 100755 > > index 539c47e..0000000 > > --- a/profiles/realtime-virtual-host/find-lapictscdeadline-optimal.sh > > +++ /dev/null > > @@ -1,30 +0,0 @@ > > -#!/bin/bash > > - > > -: ${1?"Usage: $0 latency-file"} > > - > > -lines=`wc -l $1 | cut -f 1 -d " "` > > -in_range=0 > > -prev_value=1 > > -for i in `seq 1 $lines`; do > > - a=`awk "NR==$i" $1 | cut -f 2 -d ":"` > > - value=$(($a*100/$prev_value)) > > - if [ $value -ge 98 -a $value -le 102 ]; then > > - in_range=$(($in_range + 1)) > > - else > > - in_range=0 > > - fi > > - if [ $in_range -ge 2 ]; then > > - echo -n "optimal value for lapic_timer_advance_ns is: " > > - awk "NR==$(($i - 1))" $1 | cut -f 1 -d ":" > > - exit 0 > > - fi > > - prev_value=$a > > -done > > -# if still decreasing, then use highest ns value > > -if [ $value -le 99 ]; then > > - echo -n "optimal value for lapic_timer_advance_ns is: " > > - awk "NR==$(($i - 1))" $1 | cut -f 1 -d ":" > > - exit 0 > > -fi > > -echo optimal not found > > -exit 1 > > diff --git a/profiles/realtime-virtual-host/script.sh > > b/profiles/realtime-virtual-host/script.sh > > index edae6c5..a11dac7 100755 > > --- a/profiles/realtime-virtual-host/script.sh > > +++ b/profiles/realtime-virtual-host/script.sh > > @@ -2,102 +2,13 @@ > > > > . /usr/lib/tuned/functions > > > > -CACHE_VALUE_FILE=./lapic_timer_adv_ns > > -CACHE_CPU_FILE=./lapic_timer_adv_ns.cpumodel > > -KVM_LAPIC_FILE=/sys/module/kvm/parameters/lapic_timer_advance_ns > > KTIMER_LOCKLESS_FILE=/sys/kernel/ktimer_lockless_check > > -QEMU=$(type -P qemu-kvm || echo /usr/libexec/qemu-kvm) > > -TSCDEADLINE_LATENCY="/usr/share/qemu-kvm/tscdeadline_latency.flat" > > -[ -f "$TSCDEADLINE_LATENCY" ] || > > TSCDEADLINE_LATENCY="/usr/share/tuned-profiles-nfv-host-bin/tscdeadline_latency.flat" > > -[ -f "$TSCDEADLINE_LATENCY" ] || > > TSCDEADLINE_LATENCY="/usr/share/tuned/tscdeadline_latency.flat" > > - > > -run_tsc_deadline_latency() > > -{ > > - dir=`mktemp -d` > > - > > - for i in `seq 1000 500 7000`; do > > - echo $i > $KVM_LAPIC_FILE > > - > > - unixpath=`mktemp` > > - > > - chrt -f 1 $QEMU -S -enable-kvm -device pc-testdev \ > > - -device isa-debug-exit,iobase=0xf4,iosize=0x4 \ > > - -display none -serial stdio -device pci-testdev \ > > - -kernel "$TSCDEADLINE_LATENCY" \ > > - -cpu host,tsc-deadline=on \ > > - -mon chardev=char0,mode=readline \ > > - -chardev socket,id=char0,nowait,path=$unixpath,server | grep > > latency | cut -f 2 -d ":" > $dir/out & > > - > > - sleep 1s > > - pidofvcpu=`echo "info cpus" | ncat -U $unixpath | grep thread_id > > | cut -f 3 -d "=" | tr -d "\r"` > > - taskset -p -c $1 $pidofvcpu >/dev/null > > - echo "cont" | ncat -U $unixpath >/dev/null > > - wait > > - > > - if [ ! -f $dir/out ]; then > > - die running $TSCDEADLINE_LATENCY failed > > - fi > > - > > - tmp=$(wc -l $dir/out | awk '{ print $1 }') > > - if [ $tmp -eq 0 ]; then > > - die running $TSCDEADLINE_LATENCY failed > > - fi > > - > > - A=0 > > - while read l; do > > - A=$(($A+$l)) > > - done < $dir/out > > - > > - lines=`wc -l $dir/out | cut -f 1 -d " "` > > - ans=$(($A/$lines)) > > - echo $i: $ans > > - done > > -} > > > > start() { > > setup_kvm_mod_low_latency > > > > disable_ksm > > > > - # If CPU model has changed, clean the cache > > - if [ -f $CACHE_CPU_FILE ]; then > > - curmodel=`cat /proc/cpuinfo | grep "model name" | cut -f 2 -d ":" > > | uniq` > > - if [ -z "$curmodel" ]; then > > - die failed to read CPU model > > - fi > > - > > - genmodel=`cat $CACHE_CPU_FILE` > > - > > - if [ "$curmodel" != "$genmodel" ]; then > > - rm -f $CACHE_VALUE_FILE > > - rm -f $CACHE_CPU_FILE > > - fi > > - fi > > - > > - # If the cache is empty, find the best lapic_timer_advance_ns value > > - # and cache it > > - > > - if [ ! -f $KVM_LAPIC_FILE ]; then > > - die $KVM_LAPIC_FILE not found > > - fi > > - > > - if [ ! -f $CACHE_VALUE_FILE ]; then > > - if [ -f "$TSCDEADLINE_LATENCY" ]; then > > - tempdir=`mktemp -d` > > - isolatedcpu=`echo "$TUNED_isolated_cores_expanded" | cut -f > > 1 -d ","` > > - run_tsc_deadline_latency $isolatedcpu > $tempdir/lat.out > > - if ! ./find-lapictscdeadline-optimal.sh $tempdir/lat.out > > > $tempdir/opt.out; then > > - die could not find optimal latency > > - fi > > - echo `cat $tempdir/opt.out | cut -f 2 -d ":"` > > > $CACHE_VALUE_FILE > > - curmodel=`cat /proc/cpuinfo | grep "model name" | cut -f 2 > > -d ":" | uniq` > > - echo "$curmodel" > $CACHE_CPU_FILE > > - fi > > - fi > > - > > - if [ -f $CACHE_VALUE_FILE ]; then > > - echo `cat $CACHE_VALUE_FILE` > $KVM_LAPIC_FILE > > - fi > > systemctl start rt-entsk > > > > if [ -f $KTIMER_LOCKLESS_FILE ]; then > > > > >

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tuned-2.14.0 released
by Jaroslav Skarvada 22 Jun '20

22 Jun '20

This is to announce tuned-2.14.0, a stable release. Tuned is a tool that performs monitoring and adaptive configuration of the system according to the selected profile. There was no change since the rc.1 release. For full changes see git log: https://github.com/redhat-performance/tuned/commits/v2.14.0 Release page: https://github.com/redhat-performance/tuned/releases/tag/v2.14.0 Direct download link: https://github.com/redhat-performance/tuned/archive/v2.14.0.tar.gz Upstream homepage: http://www.tuned-project.org/

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tuned-2.14.0-rc.1 released
by Jaroslav Skarvada 09 Jun '20

09 Jun '20

This is to announce tuned-2.14.0-rc.1, a pre-release. Tuned is a tool that performs monitoring and adaptive configuration of the system according to the selected profile. Noteworthy changes since previous release: - profiles: new profile optimize-serial-console resolves: rhbz#1840689 - added support for a post-loaded profile resolves: rhbz#1798183 - plugins: new irqbalance plugin resolves: rhbz#1784645 - throughput-performance: added architecture specific tuning for Marvell ThunderX resolves: rhbz#1746961 - throughput-performance: added architecture specific tuning for AMD resolves: rhbz#1746957 - scheduler: added support for cgroups resolves: rhbz#1784648 For full changes see git log: https://github.com/redhat-performance/tuned/commits/v2.14.0-rc.1 Release page: https://github.com/redhat-performance/tuned/releases/tag/v2.14.0-rc.1 Direct download link: https://github.com/redhat-performance/tuned/archive/v2.14.0-rc.1.tar.gz Upstream homepage: http://www.tuned-project.org/

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tuned-2.13.0 released
by Jaroslav Skarvada 11 Dec '19

11 Dec '19

This is to announce tuned-2.13.0, a stable release. Tuned is a tool that performs monitoring and adaptive configuration of the system according to the selected profile. Noteworthy changes since previous release: - sap-hana: updated tuning resolves: rhbz#1779821 - latency-performance: updated tuning resolves: rhbz#1779759 - added sst profile resolves: rhbz#1743879 For full changes see git log: https://github.com/redhat-performance/tuned/commits/v2.13.0 Release page: https://github.com/redhat-performance/tuned/releases/tag/v2.13.0 Direct download link: https://github.com/redhat-performance/tuned/archive/v2.13.0.tar.gz Upstream homepage: http://www.tuned-project.org/

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Re: Chybejici /usr/lib/kernel/install.d/92-tuned.install v tuned-2.11
by Jaroslav Skarvada 02 Dec '19

02 Dec '19

----- Original Message ----- > Cau Jardo, > trochu si "hraju" s BLS na CoreOS. Musel jsem udelat par "hacku" a jeden z > nich bylo pridani chybejiciho /usr/lib/kernel/install.d/92-tuned.install do > tuned-2.11. V tuned-2.12 uz je, ale je i v tuned-2.11 zdrojovem RPMku. Je > k tomu nejaky duvod? Jinak mate nejaky RH-tuned mailing list nebo chat > group, abych nespamoval jen Tebe/Ondru? > > Diky! > > Jirka > Hi, I am replying in English, because PM mailing list is CCed. tuned-2.11 has BLS support, but it's not installed on by default on RHEL-7, because IMHO RHEL-7 doesn't have (or at least didn't have) BLS support. tuned-2.11 is the last supported version on RHEL-7. We have IRC channel on RH IRC: #tuned Jarda

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tuned-2.13.0-rc.1 released
by Jaroslav Skarvada 01 Dec '19

01 Dec '19

This is to announce tuned-2.13.0-rc.1, a pre-release. Tuned is a tool that performs monitoring and adaptive configuration of the system according to the selected profile. Noteworthy changes since previous release: - cpu: fixed checking if EPB is supported resolves: rhbz#1690929 - scheduler: fixed IRQ SMP affinity verification to respect ignore_missing resolves: rhbz#1729936 - realtime: enabled ktimer_lockless_check resolves: rhbz#1734096 - plugins: support cpuinfo_regex and uname_regex matching resolves: rhbz#1748965 - sysctl: made reapply_sysctl ignore configs from /usr resolves: rhbz#1759597 - added support for multiple include directives resolves: rhbz#1760390 - realtime: added nowatchdog kernel command line option resolves: rhbz#1767614 - plugins: added 'drop' option allowing dropping options from inherited plugins - cpu: added support for C-states in latency specification - spec: enabled unit tests during build - tests: added some functional tests using beakerlib For full changes see git log: https://github.com/redhat-performance/tuned/commits/v2.13.0-rc.1 Release page: https://github.com/redhat-performance/tuned/releases/tag/v2.13.0-rc.1 Direct download link: https://github.com/redhat-performance/tuned/archive/v2.13.0-rc.1.tar.gz Upstream homepage: http://www.tuned-project.org/

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Re: [PATCH] realtime profile: fix nowatchdog kernel command line option
by Jaroslav Skarvada 13 Nov '19

13 Nov '19

----- Original Message ----- > > The correct string for the option is "tsc=nowatchdog", and > not "nowatchdog". > > Signed-off-by: Marcelo Tosatti <mtosatti(a)redhat.com> > > diff --git a/profiles/realtime/tuned.conf b/profiles/realtime/tuned.conf > index 32a00e9..6294d0c 100644 > --- a/profiles/realtime/tuned.conf > +++ b/profiles/realtime/tuned.conf > @@ -37,7 +37,7 @@ kernel.timer_migration = 0 > /sys/devices/system/machinecheck/machinecheck*/ignore_ce = 1 > > [bootloader] > -cmdline_realtime=+isolcpus=${isolated_cores} intel_pstate=disable > nosoftlockup nowatchdog > +cmdline_realtime=+isolcpus=${isolated_cores} intel_pstate=disable > nosoftlockup tsc=nowatchdog > > [script] > script = ${i:PROFILE_DIR}/script.sh > > > > Thanks, applied Jaroslav

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Re: [PATCH] realtime profile: add "nowatchdog" kernel command line option
by Jaroslav Skarvada 01 Nov '19

01 Nov '19

----- Original Message ----- > > This option disables the TSC clocksource watchdog > for isolated CPUs (which avoids interruptions > by the per-CPU clocksource watchdog timer). > > > Signed-off-by: Marcelo Tosatti <mtosatti(a)redhat.com> > > diff --git a/profiles/realtime/tuned.conf b/profiles/realtime/tuned.conf > index 3100941..32a00e9 100644 > --- a/profiles/realtime/tuned.conf > +++ b/profiles/realtime/tuned.conf > @@ -37,7 +37,7 @@ kernel.timer_migration = 0 > /sys/devices/system/machinecheck/machinecheck*/ignore_ce = 1 > > [bootloader] > -cmdline_realtime=+isolcpus=${isolated_cores} intel_pstate=disable > nosoftlockup > +cmdline_realtime=+isolcpus=${isolated_cores} intel_pstate=disable > nosoftlockup nowatchdog > > [script] > script = ${i:PROFILE_DIR}/script.sh > Thanks, applied: https://github.com/redhat-performance/tuned/commit/0facf2ed5e96a3ed92bbeebd… Jaroslav

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tuned-2.12.0 released
by Jaroslav Skarvada 27 Jun '19

27 Jun '19

This is to announce tuned-2.12.0, a stable release. Tuned is a tool that performs monitoring and adaptive configuration of the system according to the selected profile. There were no changes since the rc.1 release. For full changes see git log: https://github.com/redhat-performance/tuned/commits/v2.12.0 Release page: https://github.com/redhat-performance/tuned/releases/tag/v2.12.0 Direct download link: https://github.com/redhat-performance/tuned/archive/v2.12.0.tar.gz Upstream homepage: http://www.tuned-project.org/

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tuned-2.12.0-rc.1 released
by Jaroslav Skarvada 12 Jun '19

12 Jun '19

This is to announce tuned-2.12.0-rc.1, a pre-release. Tuned is a tool that performs monitoring and adaptive configuration of the system according to the selected profile. Noteworthy changes since previous release: - sap-netweaver: changed values of kernel.shmall and kernel.shmmax to RHEL-8 d resolves: rhbz#1708418 - sap-netweaver: changed value of kernel.sem to RHEL-8 default resolves: rhbz#1701394 - sap-hana-vmware: dropped profile resolves: rhbz#1715541 - realtime-virtual-host: added tsc-deadline=on to qemu cmdline resolves: rhbz#1554458 For full changes see git log: https://github.com/redhat-performance/tuned/commits/v2.12.0-rc.1 Release page: https://github.com/redhat-performance/tuned/releases/tag/v2.12.0-rc.1 Direct download link: https://github.com/redhat-performance/tuned/archive/v2.12.0-rc.1.tar.gz Upstream homepage: http://www.tuned-project.org/

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