samtools线程数对 sam文件转换为bam文件效率的影响

(base) [b20223040323@admin1 batch_test02]$ ls             ## 测试sam文件
template.slurm  test.sam
(base) [b20223040323@admin1 batch_test02]$ cat template.slurm     ## 测试模板
#!/bin/bash
#SBATCH   -J xxxx
#SBATCH   -p Cnode2
##SBATCH   -o %j.xxxx.result
##SBATCH   -e %j.xxxx.error
#SBATCH   -N 1
#SBATCH   -n xxxx
#SBATCH --cpus-per-task=1
STIME=`date +%s`
samtools view -@ xxxx -b -S test.sam > xxxx.bam
let ETIME=`date +%s`-$STIME
echo thread_xxxx Elapsed time: $ETIMEs > xxxx.time       ## 分别给与4、16、32、64线程； 记录程序运行时间
(base) [b20223040323@admin1 batch_test02]$ for i in 4 16 32 64; do sed "s/xxxx/$i/g" template.slurm > $i.slurm; done
(base) [b20223040323@admin1 batch_test02]$ find *.slurm | grep -v "template.slurm" | xargs -n 1 sbatch  ## 投递任务
Submitted batch job 396044
Submitted batch job 396045
Submitted batch job 396046
Submitted batch job 396047