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: Sat, 14 Nov 2015 08:02:00 +0100 From: Christoph Hellwig <hch@....de> To: Or Gerlitz <gerlitz.or@...il.com> Cc: Sagi Grimberg <sagig@....mellanox.co.il>, "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>, Bart Van Assche <bart.vanassche@...disk.com>, axboe@...com, "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>, Linux Kernel <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 1/9] move blk_iopoll to limit and make it generally available On Fri, Nov 13, 2015 at 05:23:39PM +0200, Or Gerlitz wrote: > On Fri, Nov 13, 2015 at 3:46 PM, Christoph Hellwig <hch@....de> wrote: > > The new name is irq_poll as iopoll is already taken. Better suggestions > > welcome. > > Sagi (or Christoph if you can address that), > > @ some pointer over the last 18 months there was a port done at > mellanox for iser to use blk-iopoll and AFAIR it didn't work well or > didn't work at all. Can you tell now what was the problem and how did > you address it at your generalization? Hi Or, Sagi mentioned last time he tried a similar approach in iSER he saw some large latency sparks. We've seen nothing worse than the original approach. The Flash memory summit slide set has some numbers: http://www.flashmemorysummit.com/English/Collaterals/Proceedings/2015/20150811_FA11_Bandic.pdf they aren't quite up to date, but the latency distribution hasn't really changed. -- 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