From: Liang Zhen Date: Thu, 26 Mar 2015 01:53:19 +0000 (-0400) Subject: staging/lustre/ptlrpc: false alarm in AT network latency measuring X-Git-Tag: omap-for-v4.2/o2_dc~155^2~138^2~79 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06fbc01a870eea4431ca340642da7bfd4a5a262e;p=pandora-kernel.git staging/lustre/ptlrpc: false alarm in AT network latency measuring If early reply of client RPC is lost and client RPC is expired and resent, server will drop the resent RPC because it's already in processing, server may also send reply or early reply to client, which can still match reply buffer of the original request. In this case, client is measuring time from resent time, but server is reporting service time of original RPC, which is longer than the time measured by client. Signed-off-by: Liang Zhen Reviewed-on: http://review.whamcloud.com/12855 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5545 Reviewed-by: Li Wei Reviewed-by: Johann Lombardi Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed