| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 21 Nov 2011 08:08:28 +0000 From: "Jan Beulich" <JBeulich@...e.com> To: "Kevin Cernekee" <cernekee@...il.com>, "Rusty Russell" <rusty@...tcorp.com.au> Cc: <linux-kbuild@...r.kernel.org>, <linux-kernel@...r.kernel.org> Subject: Re: [PATCH V2 2/2] module: Fix performance regression on modules with large symbol tables >>> On 21.11.11 at 06:06, Rusty Russell <rusty@...tcorp.com.au> wrote: > On Thu, 17 Nov 2011 19:15:02 -0800, Kevin Cernekee <cernekee@...il.com> wrote: >> Potential memory savings from reusing EXACT strtab matches: 36,475 bytes >> total; 35,432 from nvidia.ko. For comparison, discarding non-core >> strtab entries saved about 91KB on my system. > ... >> Original scheme: 1.230s >> With patch V2: 0.280s >> With naive copying: 0.058s > > I'm deeply tempted. It's very simple, 46 lines shorter, preserves exact > matches, and doesn't have any strange slowdowns on corner cases. > > But like Kevin, I could be convinced either way. Jan? I'd be fine with the simpler solution, as long it is clearly understood (and marked as intended to be that was for the time being) that it has room for improvement, should it ever turn out to yield more significant savings in other contexts. Jan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists