Steven Williamson stevenwilliamson

Benchmark

Using fio from https://github.com/axboe/fio

Tests are run in a zone and the file system been written to has primarycache and secondarycache set to none

zfs get primarycache,secondarycache /ssd/79b49b18-9111-4020-a0a5-2f96364b01e1
NAME                                      PROPERTY        VALUE           SOURCE

Job Config

[global]
bs=4k
ioengine=posixaio
iodepth=32
size=8g
runtime=60

	Disk latency to device with a MySQL slave running providing backround IO.

	The SSD's are sd{5,6,7,8}, sd{0,1,2,3} are Hard drives

	Times are in microseconds and the aggregation is per device and operatins type READ/WRITE

	For refernece the Intel datasheet http://www.intel.com/content/www/us/en/solid-state-drives/ssd-dc-s3710-spec.html
	states that reads should return from the device in 55 microseconds, and writes in 66 microseconds, for 4KB block sizes.

	[root@phy9-sw1-gc (gc) /opt/debug]# ./diskiolat.d

	fio-2.2.12-10-gb9c8
	Starting 16 processes
	seq-read: Laying out IO file(s) (1 file(s) / 8192MB)
	Jobs: 4 (f=4): [_(12),w(4)] [37.7% done] [0KB/81380KB/0KB /s] [0/20.4K/0 iops] [eta 05m:48s]
	seq-read: (groupid=0, jobs=4): err= 0: pid=41643: Wed Dec 2 12:43:00 2015
	read : io=32768MB, bw=779882KB/s, iops=194970, runt= 43025msec
	slat (usec): min=0, max=659, avg= 4.40, stdev= 5.99
	clat (usec): min=4, max=17736, avg=625.58, stdev=308.24
	lat (usec): min=11, max=17739, avg=629.98, stdev=307.95
	clat percentiles (usec):

	#!/usr/sbin/dtrace -s

	syscall::read*:entry /fds[arg0].fi_fs == "zfs"/
	{
	self->start = timestamp;
	}

	syscall::read*:return / self->start /
	{
	@data["latency_aggregation"] = llquantize(timestamp - self->start, 10, 0, 6, 20);

	marking py26-expat-2.6.9 as non auto-removable
	% Total % Received % Xferd Average Speed Time Time Time Current
	Dload Upload Total Spent Left Speed
	100 108k 100 108k 0 0 68001 0 0:00:01 0:00:01 --:--:-- 83944
	No valid signature found for dmake-20130927.
	Do you want to proceed with the installation [y/n]?
	y
	% Total % Received % Xferd Average Speed Time Time Time Current
	Dload Upload Total Spent Left Speed
	100 82282 100 82282 0 0 59192 0 0:00:01 0:00:01 --:--:-- 59280

	openssl s_client -showcerts -CApath /opt/local/etc/openssl/certs/ -connect ftp.netbsd.org:443
	CONNECTED(00000004)
	depth=0 OU = GT34707538, OU = See www.rapidssl.com/resources/cps (c)15, OU = Domain Control Validated - RapidSSL(R), CN = *.netbsd.org
	verify error:num=20:unable to get local issuer certificate
	verify return:1
	depth=0 OU = GT34707538, OU = See www.rapidssl.com/resources/cps (c)15, OU = Domain Control Validated - RapidSSL(R), CN = *.netbsd.org
	verify error:num=27:certificate not trusted
	verify return:1
	depth=0 OU = GT34707538, OU = See www.rapidssl.com/resources/cps (c)15, OU = Domain Control Validated - RapidSSL(R), CN = *.netbsd.org
	verify error:num=21:unable to verify the first certificate

	Job Config
	[global]
	bs=4k
	ioengine=posixaio
	iodepth=4
	size=1g
	runtime=60
	group_reporting=1
	numjobs=8
	directory=/var/tmp