[Lustre-discuss] write RPC & congestion

burlen burlen.loring at gmail.com
Mon Sep 27 15:59:47 PDT 2010

  On 09/24/2010 06:36 PM, Andreas Dilger wrote:
> On 2010-09-24, at 19:10, Andreas Dilger wrote:
>> On 2010-09-24, at 18:20, burlen wrote:
>>> To be sure I understand this, is it correct that each OST has its own pool of service threads? So system wide number of service threads is bound by oss_max_threads*num_osts?
>> Actuall, the current oss_max_threads tunable is for the whole OSS (as the name implies).

Again many thanks for your help

With respect to an upper bound on number of rpcs and RMDAs in flight 
system wide, does the situation change much on the Cray XT5 with Lustre 
1.8 and OSSs directly connected to the 3d torus? I am asking after 
having seen the XT3 section in manual. not sure if it applies to XT5 and 
if it does how this might influence the above tunables.

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