Date: Thu, 02 Jun 2011 17:24:47 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Ivan Voras <ivoras@FreeBSD.org> Cc: freebsd-performance@FreeBSD.org Subject: Re: tlb shootdown Message-ID: <4DE79D2F.8050907@FreeBSD.org> In-Reply-To: <is7u3u$jhf$1@dough.gmane.org> References: <4DE61E6F.1010209@FreeBSD.org> <is7u3u$jhf$1@dough.gmane.org>
next in thread | previous in thread | raw e-mail | index | archive | help
on 02/06/2011 15:02 Ivan Voras said the following: > On 01/06/2011 13:11, Andriy Gapon wrote: >> >> Anyone knows of a benchmark/test that can measure/demonstrate difference in tlb >> shootdown performance (or its lack)? > > The "tlb" utility from lmbench may help you. Just because it's named tlb and I asked for tlb something? :) tlb - TLB size and latency benchmark ... tlb tries to determine the size, in pages, of the TLB. The largest amount of memory it will examine is len bytes. ... Once the TLB boundary is located tlb reports the TLB miss latency as the TLB latency for twice as many pages as the TLB can hold. I am not this will tell anything about TLB _shootdown_ performance of SMP systems. Perhaps I wasn't specific enough in my original question. -- Andriy Gapon
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4DE79D2F.8050907>