From: Stephen Hemminger <stephen@networkplumber.org>
To: "Kavanagh, Mark B" <mark.b.kavanagh@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Performance - linking against DPDK shared vs static libraries
Date: Wed, 23 Jul 2014 11:08:47 -0700 [thread overview]
Message-ID: <20140723110847.73cf9052@haswell> (raw)
In-Reply-To: <DC5AD7FA266D86499789B1BCAEC715F846BA3C50@IRSMSX105.ger.corp.intel.com>
On Wed, 23 Jul 2014 15:58:06 +0000
"Kavanagh, Mark B" <mark.b.kavanagh@intel.com> wrote:
> Hi,
>
> I build a switching application, which links against DPDK shared libraries; when I run the application, I see throughput of X. I then build the application again, except this time I link against DPDK shared libraries, having modified the application's build parameters appropriately. In this case, I see a performance drop of around .04%, which given the high throughput of the application is significant.
>
> Is such performance degradation to be expected when using DPDK shared libraries, and if not, are there any best-known methods for preventing performance degradation, assuming that I may be constrained to using shared libraries going forward?
>
> Thanks,
> Mark
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Shared libraries live on different pages and cause more TLB misses.
prev parent reply other threads:[~2014-07-23 18:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-23 15:58 Kavanagh, Mark B
2014-07-23 16:37 ` Antti Kantee
2014-07-23 21:43 ` Kavanagh, Mark B
2014-07-23 21:56 ` Matthew Hall
2014-07-24 14:02 ` Kavanagh, Mark B
2014-07-23 18:08 ` Stephen Hemminger [this message]
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