From 529b7725a90268694af24b7f2579fb6879ce01ab Mon Sep 17 00:00:00 2001
From: Bruce Cran <bruce.cran@xxxxxxxxxxx>
Date: Thu, 6 Oct 2016 03:13:54 +0000
Subject: [PATCH] windowsaio: fix completion thread affinitization
Affinitize the windowsaio completion threads to the same CPUs as the
submission threads.
---
engines/windowsaio.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/engines/windowsaio.c b/engines/windowsaio.c
index 0e164b6..f5cb048 100644
--- a/engines/windowsaio.c
+++ b/engines/windowsaio.c
@@ -113,10 +113,15 @@ static int fio_windowsaio_init(struct thread_data *td)
if (!rc)
{
+ DWORD threadid;
+
ctx->iocp = hFile;
ctx->wd = wd;
- wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, NULL);
- if (wd->iothread == NULL)
+ wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, &threadid);
+
+ if (wd->iothread != NULL)
+ fio_setaffinity(threadid, td->o.cpumask);
+ else
log_err("windowsaio: failed to create io completion thread\n");
}
--
2.9.3.windows.2
