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blockdev direct IO при отдаче виде о с XFS (soft RAID) и ext4 (singl HDD)
- To: nginx-ru@xxxxxxxxx
- Subject: blockdev direct IO при отдаче виде о с XFS (soft RAID) и ext4 (singl HDD)
- From: "kozakd" <nginx-forum@xxxxxxxx>
- Date: Fri, 11 Nov 2011 09:40:40 -0500
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При нагрузке порядка 1500 конектов и
ближе к 2 Gbps
ловлю в ps это blockdev_direct_IO
Есть варианты решения?
CenOS 6.0 2.6.32-71.29.1.el6.x86_64
RAM 16 GB
nginx 1.0.9
user web;
worker_processes 1;
worker_rlimit_nofile 32000;
error_log logs/error.log info;
events {
worker_connections 16000;
}
http {
include mime.types;
default_type application/octet-stream;
server_tokens off;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
aio on;
directio 4m;
directio_alignment 4k;
output_buffers 1 1m;
keepalive_timeout 10;
client_header_timeout 20;
client_body_timeout 20;
send_timeout 20s;
resolver_timeout 0;
reset_timedout_connection on;
proxy_buffering off;
open_file_cache max=16000 inactive=10m;
open_file_cache_valid 120m;
open_file_cache_min_uses 10;
open_file_cache_errors off;
Posted at Nginx Forum:
http://forum.nginx.org/read.php?21,218222,218222#msg-218222
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