Am 23.05.2012 09:22, schrieb Andrey Korolyov: > Hi, > > For Stefan: > > Increasing socket memory gave me about some percents on fio tests > inside VM(I have measured > 'max-iops-until-ceph-throws-message-about-delayed-write' parameter). > What is more important, osd process, if possible, should be pinned to > dedicated core or two, and all other processes should not use this > core(you may do it via cg or manually), because even one four-core > non-pinned VM process during test causes a drop of osd` throughput > almost twice, same for any other heavy process on the host. Tried that using taskset but i didn't get any noticable boost. Also the kernel already prevents jumping from core 2 core whenever possible. As these machines are dedicated to osd there is no other load. > net.core.rmem_max = 16777216 > net.core.wmem_max = 16777216 > net.ipv4.tcp_rmem = 4096 87380 16777216 > net.ipv4.tcp_wmem = 4096 65536 16777216 This gaves me around 3-4 MB/s. Stefan -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
