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Kefu Chai tchaikov

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no good deed goes unpunished
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tchaikov / gist:b61788d9d9a2ab60c54517066dc80471
Last active December 3, 2023 05:44
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQD4l25l32QJxD9aWZxXcUaVPAClY53yuLwRvnn4V5ZzE3Wd5ddrbbsBhON6iPdb5Vv4d9Q3b1SfKhWjAIZgSeHwD1vcTPt/Kd2nIpwv2qQYjKAvnByS21NNdd5kf1Iz+NFieJlWi+x3vBaDR53OY9OpVnwZj7pZ4jQXHJ4bhVOEG9auxncpy4/HJi70IpnqRFg9GidqcaGsiFUu4+ji1euU2WKnX2hVmIxK/47vKTGSVpDEAPM8OqBueKXU78fh2xeFR76hVWkKpLwhhdr5OAY1dDzuADjFNUT/x76eceXZ8B1aPBsQuhQ9W2oPtQZRHqu8ElXFuhrwQ30pm5IAzimb jenkins-build@jenkins
ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAuTvkaUtEaLbLcYA9Zw3MoHI5ZPudKf6CAbAZdhp4RMVujimR61TT6LdRF20g6F7pH7GrI/1WP2bu7a3sZyCZ1nCJCOhrTTS+2wwy7oGo/0yY4l+Bw6i7LGmJgqpO5dDxwADMlaHUwJ7Rf1Q+Pd7NmggkAVTmaN6qUGffz9hZsj7ibD/Z8/GFtQsCEMloTLtnz4NB6Gxe54UXEKz9pvjpXBhs0xWsJtDKaPFrbKRKswuH45XPuwJhGr249ZYtwQqcgXSWhOUcPTwf5Y6fj27aL2dx566DxQzqzNbcTcO96MguIy8Ufnc0kIOQQw9oHJZtg82zwM6+2mWr9J/K94Gv9w== kefu@save.node2
ssh-dss AAAAB3NzaC1kc3MAAACBAP+K3vkPyOTORoPXrWiC/M/TaiGDCG5fgWoPstjpd65xYssyhXgyQx3v1Oc8cubKbEw4nYcXAWROCMSaWQzt05e3vsIqbJnrWBhVmDSPFXPUE69j4YgXs2Wtx6hmbYoJ19aKIpCSVBlbE6vfLIXJDxpsSKNT6E3tKSyuSWKkDSkfAAAAFQCQul0fWTZpTgGQQf60
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tchaikov / asymmetric_coroutine.hpp
Created January 15, 2020 03:57
// Copyright Oliver Kowalke 2009.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_COROUTINES_ASYMMETRIC_COROUTINE_H
#define BOOST_COROUTINES_ASYMMETRIC_COROUTINE_H
#include <cstddef>
@tchaikov
tchaikov / dpdk.patch
Created October 23, 2019 05:46
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3b1295cd0c..993ef009c3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -305,6 +305,7 @@ if(WITH_SEASTAR)
endmacro ()
set(Seastar_HWLOC OFF CACHE BOOL "" FORCE)
set(Seastar_STD_OPTIONAL_VARIANT_STRINGVIEW ON CACHE BOOL "" FORCE)
+ set(Seastar_DPDK ON CACHE BOOL "" FORCE)
set(Seastar_CXX_FLAGS "-Wno-error;-Wno-sign-compare;-Wno-attributes;-Wno-pessimizing-move;-Wno-address-of-packed-member" CACHE STRING "" FORCE)
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tchaikov / incerta08.txt
Created October 10, 2019 14:45
13:50:50 - DEBUG - cbt - Nodes : incerta08.front.sepia.ceph.com
13:50:50 - DEBUG - cbt - Nodes : incerta08.front.sepia.ceph.com
13:50:50 - DEBUG - cbt - Nodes : incerta08.front.sepia.ceph.com
13:50:50 - WARNING - cbt - prefill/incerta08.front.sepia.ceph.com/0: bandwidth: (or (greater) (near 0.05)):: 53.4859/210.686 => rejected
13:50:50 - WARNING - cbt - prefill/incerta08.front.sepia.ceph.com/0: iops_avg: (or (greater) (near 0.05)):: 13692.0/53935.0 => rejected
13:50:50 - INFO - cbt - prefill/incerta08.front.sepia.ceph.com/0: iops_stddev: (or (less) (near 0.50)):: 1067.74/4857.77 => accepted
13:50:50 - WARNING - cbt - prefill/incerta08.front.sepia.ceph.com/0: latency_avg: (or (less) (near 0.05)):: 0.00233624/0.000592926 => rejected
13:50:50 - INFO - cbt - rand/incerta08.front.sepia.ceph.com/0: bandwidth: (or (greater) (near 0.05)):: 101.839/103.585 => accepted
13:50:50 - INFO - cbt - rand/incerta08.front.sepia.ceph.com/0: iops_avg: (or (
@tchaikov
tchaikov / oct.10.2019.seastar.rst
Last active October 10, 2019 10:46

3 replica, pool size = 3

2 * bench

$ ~/dev/cbt/compare.py -a /tmp/seastar/ -b /tmp/classic/ -v
17:55:05 - DEBUG    - cbt      - Nodes : gen8
17:55:05 - DEBUG    - cbt      - Nodes : gen8
@tchaikov
tchaikov / oct.10.2019.seastar.txt
Created October 10, 2019 09:57
$ ~/dev/cbt/compare.py -a /tmp/seastar/ -b /tmp/classic/ -v
17:55:05 - DEBUG - cbt - Nodes : gen8
17:55:05 - DEBUG - cbt - Nodes : gen8
17:55:05 - DEBUG - cbt - Nodes : gen8
17:55:05 - WARNING - cbt - prefill/gen8/0: bandwidth: (or (greater) (near 0.05)):: 0.153824/2.67928 => rejected
17:55:05 - WARNING - cbt - prefill/gen8/0: iops_avg: (or (greater) (near 0.05)):: 39.0/685.0 => rejected
17:55:05 - INFO - cbt - prefill/gen8/0: iops_stddev: (or (less) (near 0.50)):: 8.02081/31.8198 => accepted
17:55:05 - WARNING - cbt - prefill/gen8/0: latency_avg: (or (less) (near 0.05)):: 0.405547/0.0233105 => rejected
17:55:05 - WARNING - cbt - prefill/gen8/1: bandwidth: (or (greater) (near 0.05)):: 0.144901/2.5052 => rejected
17:55:05 - WARNING - cbt - prefill/gen8/1: iops_avg: (or (greater) (near 0.05)):: 37.0/641.0 => rejected
@tchaikov
tchaikov / seastarized-rocksdb.rst
Last active October 9, 2019 13:07
searocks benchmark s01

seastar

$ ./db_bench --benchmarks="fillseq" --num 2500
fillseq      :       2.097 micros/op 476371 ops/sec;   52.7 MB/s

$ ./db_bench --benchmarks="fillseq" --num 25000
fillseq      :       4.429 micros/op 225768 ops/sec;   25.0 MB/s
@tchaikov
tchaikov / crimson-osd-05-08.md
Last active May 8, 2019 15:47

build procedure

diff --git a/src/crimson/osd/pg.cc b/src/crimson/osd/pg.cc
index 6cae617f84..50fceece20 100644
--- a/src/crimson/osd/pg.cc
+++ b/src/crimson/osd/pg.cc
@@ -959,6 +959,7 @@ seastar::future<> PG::share_pg_info()
 seastar::future<> PG::wait_for_active()
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tchaikov / classic-4k-write.svg
Created May 8, 2019 15:39
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tchaikov / crimson-perf.svg
Created April 4, 2019 11:48
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