Disksim 4.0 + SSD-extention make编译时出现错误 “ **commands commence before first target. Stop.”

1、首先参考博文/uid-28536106-id-3463775.html 安装Disksim 4.0 + SSD-extention

2、make的过程中出现错误，这是因为在 上述博文提到的

Step 3. Append SSD model library path to dixtrac.

add these lines to dixtrac/.paths

# path to ssdmodel

export SSDMODEL_PREFIX=../ssdmodel

export SSDMODEL_INCL=$(SSDMODEL_PREFIX)/include

export SSDMODEL_CFLAGS=-I$(SSDMODEL_INCL)

export SSDMODEL_LDPATH=$(SSDMODEL_PREFIX)/lib

export SSDMODEL_LDFLAGS=-L$(SSDMODEL_LDPATH) -lssdmodel

$(LIBDISKSIM_LDFLAGS) \

$(MEMSMODEL_LDFLAGS) \

$(DISKMODEL_LDFLAGS) \

$(SSDMODEL_LDFLAGS) \

$(LIBPARAM_LDFLAGS) \

$(LIBDDBG_LDFLAGS) \

$(ST_LDFLAGS)

CFLAGS = -Wall -g -MD -I. $(DEFINES) -I$(STHREADS) $(DMINCLUDES) \

$(LIBDISKSIM_CFLAGS) \

$(DISKMODEL_CFLAGS) $(LIBPARAM_CFLAGS) $(LIBDDBG_CFLAGS) \

$(SSDMODEL_CFLAGS)

问题就出来加粗斜线部分，makefile命令的第一个字符应该是[tab]键，但是我用了空格，所以会报错：**commands commence before first target. Stop

备注：1、本人用的ubuntu 10.04 ，gcc 4.3.4，flex 2.5.4 ，bison 2.5.1

2、按照参考博文所说，如果不用dixtrac版本，直接step1，2，4，5就能正常运行，跳过了step3，可以正确执行

运行disksim

Run DiskSim

disksim <parfile> <outfile> <tracetype> <tracefile> <synthgen> [p.o]

<parfile> : parameter file

<outfile> : output file (redirect ro terminal by ”stdout”)

<tracetype> : format of input trace file

<tracefile> : trace file used as inuput

<synthgen> : activate synthetic workload generator

[p.o] : allow parfile parameter override

Example :

$./disksim ssd-sr250k.parv ssd-sr250k.outv ascii 0 1

以下执行的部分结果：

Sequential read (250K I/Os): average SSD response time should be around 0.132 ms

ssd Response time average: 0.132511

Sequential write (250K I/Os): average SSD response time should be around 0.310 ms

ssd Response time average: 0.310895

Sequential write (5M I/Os): average SSD response time should be around 0.334 ms

ssd Response time average: 0.334365

Random read (250K I/Os): average SSD response time should be around 0.136 ms

ssd Response time average: 0.136118

Random write (250K I/Os): average SSD response time should be around 0.329 ms

ssd Response time average: 0.329458

Random write (5M I/Os): average SSD response time should be around 0.593 ms

参考文章：/uid-28536106-id-3463775.html

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