Hi Sander, I don't recall any open issues with splicing on the ML; here a few questions to pinpoint the issue:
Whats is the percentage of requests failing this way? Do you know if this is an issue introduced by a certain haproxy build, and thus was working previously, or did you only recently enable splice-auto? Are you able to reproduce this in dev17 or in stable 1.4.23 (but you probably rely on 1.5 features)? Can you remove splice-auto, and check whether splice-request or splice-response or both are affected? Do you see this in a lab setup as well or do you need to troubleshoot this with production services? Are you able to tcpdump an affected session (both front and backend traffic)? > I use kernel 3.2.40 with grsec patch Any kernel messages in dmesg? Do you have the possibility to install a stable but recent vanilla kernel from kernel.org (I suppose 3.8.5 would be a good choice)? This may as well be a kernel issue. Regards, Lukas

