* [dpdk-dev] [PATCH] eal/windows: fix default thread priority
@ 2021-02-18 11:40 Tal Shnaiderman
2021-03-09 8:30 ` Tal Shnaiderman
2021-03-09 21:44 ` Dmitry Kozlyuk
0 siblings, 2 replies; 4+ messages in thread
From: Tal Shnaiderman @ 2021-02-18 11:40 UTC (permalink / raw)
To: dev
Cc: thomas, pallavi.kadam, dmitry.kozliuk, navasile, dmitrym,
david.marchand, stable
The hard-coded thread priority for Windows threads in eal
is REALTIME_PRIORITY_CLASS/THREAD_PRIORITY_TIME_CRITICAL.
This results in issues with DPDK threads causing OS thread starvation
and eventually a bugcheck.
The fix reduce the thread priority to
NORMAL_PRIORITY_CLASS/THREAD_PRIORITY_NORMAL.
Bugzilla ID: 600
Fixes: 53ffd9f080f ("eal/windows: add minimum viable code")
Cc: stable@dpdk.org
Reported-by: Odi Assli <odia@nvidia.com>
Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
---
lib/librte_eal/windows/eal_thread.c | 4 ++--
lib/librte_eal/windows/include/pthread.h | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/lib/librte_eal/windows/eal_thread.c b/lib/librte_eal/windows/eal_thread.c
index 908e726d16..9c3f6d69fd 100644
--- a/lib/librte_eal/windows/eal_thread.c
+++ b/lib/librte_eal/windows/eal_thread.c
@@ -134,8 +134,8 @@ eal_thread_create(pthread_t *thread)
if (!th)
return -1;
- SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS);
- SetThreadPriority(th, THREAD_PRIORITY_TIME_CRITICAL);
+ SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);
+ SetThreadPriority(th, THREAD_PRIORITY_NORMAL);
return 0;
}
diff --git a/lib/librte_eal/windows/include/pthread.h b/lib/librte_eal/windows/include/pthread.h
index fb11a07ce6..9aeab1fa70 100644
--- a/lib/librte_eal/windows/include/pthread.h
+++ b/lib/librte_eal/windows/include/pthread.h
@@ -137,8 +137,8 @@ pthread_create(void *threadid, const void *threadattr, void *threadfunc,
hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)threadfunc,
args, 0, (LPDWORD)threadid);
if (hThread) {
- SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS);
- SetThreadPriority(hThread, THREAD_PRIORITY_TIME_CRITICAL);
+ SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);
+ SetThreadPriority(hThread, THREAD_PRIORITY_NORMAL);
}
return ((hThread != NULL) ? 0 : E_FAIL);
}
--
2.16.1.windows.4
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [dpdk-dev] [PATCH] eal/windows: fix default thread priority
2021-02-18 11:40 [dpdk-dev] [PATCH] eal/windows: fix default thread priority Tal Shnaiderman
@ 2021-03-09 8:30 ` Tal Shnaiderman
2021-03-09 21:44 ` Dmitry Kozlyuk
1 sibling, 0 replies; 4+ messages in thread
From: Tal Shnaiderman @ 2021-03-09 8:30 UTC (permalink / raw)
To: dev
Cc: NBU-Contact-Thomas Monjalon, pallavi.kadam, dmitry.kozliuk,
navasile, dmitrym, david.marchand, stable
> Subject: [dpdk-dev] [PATCH] eal/windows: fix default thread priority
>
> The hard-coded thread priority for Windows threads in eal is
> REALTIME_PRIORITY_CLASS/THREAD_PRIORITY_TIME_CRITICAL.
>
> This results in issues with DPDK threads causing OS thread starvation and
> eventually a bugcheck.
>
> The fix reduce the thread priority to
> NORMAL_PRIORITY_CLASS/THREAD_PRIORITY_NORMAL.
>
> Bugzilla ID: 600
> Fixes: 53ffd9f080f ("eal/windows: add minimum viable code")
> Cc: stable@dpdk.org
>
> Reported-by: Odi Assli <odia@nvidia.com>
> Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
> ---
> lib/librte_eal/windows/eal_thread.c | 4 ++--
> lib/librte_eal/windows/include/pthread.h | 4 ++--
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/lib/librte_eal/windows/eal_thread.c
> b/lib/librte_eal/windows/eal_thread.c
> index 908e726d16..9c3f6d69fd 100644
> --- a/lib/librte_eal/windows/eal_thread.c
> +++ b/lib/librte_eal/windows/eal_thread.c
> @@ -134,8 +134,8 @@ eal_thread_create(pthread_t *thread)
> if (!th)
> return -1;
>
> - SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS);
> - SetThreadPriority(th, THREAD_PRIORITY_TIME_CRITICAL);
> + SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);
> + SetThreadPriority(th, THREAD_PRIORITY_NORMAL);
>
> return 0;
> }
> diff --git a/lib/librte_eal/windows/include/pthread.h
> b/lib/librte_eal/windows/include/pthread.h
> index fb11a07ce6..9aeab1fa70 100644
> --- a/lib/librte_eal/windows/include/pthread.h
> +++ b/lib/librte_eal/windows/include/pthread.h
> @@ -137,8 +137,8 @@ pthread_create(void *threadid, const void
> *threadattr, void *threadfunc,
> hThread = CreateThread(NULL, 0,
> (LPTHREAD_START_ROUTINE)threadfunc,
> args, 0, (LPDWORD)threadid);
> if (hThread) {
> - SetPriorityClass(GetCurrentProcess(),
> REALTIME_PRIORITY_CLASS);
> - SetThreadPriority(hThread,
> THREAD_PRIORITY_TIME_CRITICAL);
> + SetPriorityClass(GetCurrentProcess(),
> NORMAL_PRIORITY_CLASS);
> + SetThreadPriority(hThread, THREAD_PRIORITY_NORMAL);
> }
> return ((hThread != NULL) ? 0 : E_FAIL); }
> --
> 2.16.1.windows.4
Hi,
Any comments on the patch or can it be Acked as was discussed in the community call?
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [dpdk-dev] [PATCH] eal/windows: fix default thread priority
2021-02-18 11:40 [dpdk-dev] [PATCH] eal/windows: fix default thread priority Tal Shnaiderman
2021-03-09 8:30 ` Tal Shnaiderman
@ 2021-03-09 21:44 ` Dmitry Kozlyuk
2021-03-16 11:41 ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
1 sibling, 1 reply; 4+ messages in thread
From: Dmitry Kozlyuk @ 2021-03-09 21:44 UTC (permalink / raw)
To: Tal Shnaiderman
Cc: dev, thomas, pallavi.kadam, navasile, dmitrym, david.marchand, stable
2021-02-18 13:40 (UTC+0200), Tal Shnaiderman:
> The hard-coded thread priority for Windows threads in eal
> is REALTIME_PRIORITY_CLASS/THREAD_PRIORITY_TIME_CRITICAL.
>
> This results in issues with DPDK threads causing OS thread starvation
> and eventually a bugcheck.
>
> The fix reduce the thread priority to
> NORMAL_PRIORITY_CLASS/THREAD_PRIORITY_NORMAL.
>
> Bugzilla ID: 600
> Fixes: 53ffd9f080f ("eal/windows: add minimum viable code")
> Cc: stable@dpdk.org
>
> Reported-by: Odi Assli <odia@nvidia.com>
> Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
> ---
> lib/librte_eal/windows/eal_thread.c | 4 ++--
> lib/librte_eal/windows/include/pthread.h | 4 ++--
> 2 files changed, 4 insertions(+), 4 deletions(-)
Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [dpdk-dev] [dpdk-stable] [PATCH] eal/windows: fix default thread priority
2021-03-09 21:44 ` Dmitry Kozlyuk
@ 2021-03-16 11:41 ` Thomas Monjalon
0 siblings, 0 replies; 4+ messages in thread
From: Thomas Monjalon @ 2021-03-16 11:41 UTC (permalink / raw)
To: Tal Shnaiderman
Cc: stable, dev, pallavi.kadam, navasile, dmitrym, david.marchand,
Dmitry Kozlyuk
09/03/2021 22:44, Dmitry Kozlyuk:
> 2021-02-18 13:40 (UTC+0200), Tal Shnaiderman:
> > The hard-coded thread priority for Windows threads in eal
> > is REALTIME_PRIORITY_CLASS/THREAD_PRIORITY_TIME_CRITICAL.
> >
> > This results in issues with DPDK threads causing OS thread starvation
> > and eventually a bugcheck.
> >
> > The fix reduce the thread priority to
> > NORMAL_PRIORITY_CLASS/THREAD_PRIORITY_NORMAL.
> >
> > Bugzilla ID: 600
> > Fixes: 53ffd9f080f ("eal/windows: add minimum viable code")
> > Cc: stable@dpdk.org
> >
> > Reported-by: Odi Assli <odia@nvidia.com>
> > Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
>
> Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Applied, thanks
^ permalink raw reply [flat|nested] 4+ messages in thread
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2021-02-18 11:40 [dpdk-dev] [PATCH] eal/windows: fix default thread priority Tal Shnaiderman
2021-03-09 8:30 ` Tal Shnaiderman
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