All of lore.kernel.org
 help / color / mirror / Atom feed
From: Zhihong Wang <zhihong.wang@intel.com>
To: dev@dpdk.org
Subject: [PATCH RFC v2 1/2] lib/librte_eal: Reduce timer initialization time
Date: Thu, 19 Nov 2015 20:53:47 -0500	[thread overview]
Message-ID: <1447984428-137897-2-git-send-email-zhihong.wang@intel.com> (raw)
In-Reply-To: <1447984428-137897-1-git-send-email-zhihong.wang@intel.com>

Changing from 1/2 second to 1/10 doesn't compromise the precision, and a 4/10 second is worth saving.

Signed-off-by: Zhihong Wang <zhihong.wang@intel.com>
---
 lib/librte_eal/linuxapp/eal/eal_timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_eal/linuxapp/eal/eal_timer.c b/lib/librte_eal/linuxapp/eal/eal_timer.c
index e0642de..4de0353 100644
--- a/lib/librte_eal/linuxapp/eal/eal_timer.c
+++ b/lib/librte_eal/linuxapp/eal/eal_timer.c
@@ -271,7 +271,7 @@ get_tsc_freq(void)
 #ifdef CLOCK_MONOTONIC_RAW
 #define NS_PER_SEC 1E9
 
-	struct timespec sleeptime = {.tv_nsec = 5E8 }; /* 1/2 second */
+	struct timespec sleeptime = {.tv_nsec = 1E8 }; /* 1/10 second */
 
 	struct timespec t_start, t_end;
 	uint64_t tsc_hz;
-- 
2.5.0

  reply	other threads:[~2015-11-20  8:56 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-20  1:53 [PATCH RFC v2 0/2] Reduce DPDK initialization time Zhihong Wang
2015-11-20  1:53 ` Zhihong Wang [this message]
2015-11-20 16:31   ` [PATCH RFC v2 1/2] lib/librte_eal: Reduce timer " Stephen Hemminger
2015-11-23  1:29     ` Wang, Zhihong
2015-11-20  1:53 ` [PATCH RFC v2 2/2] lib/librte_eal: Remove unnecessary hugepage zero-filling Zhihong Wang
2015-11-20 16:32   ` Stephen Hemminger
2015-11-23  1:31     ` Wang, Zhihong

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1447984428-137897-2-git-send-email-zhihong.wang@intel.com \
    --to=zhihong.wang@intel.com \
    --cc=dev@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.