<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><span style="font-family: 微软雅黑; line-height: 21px;" class="">Hi all,</span><div class=""><div class="" style="font-family: 微软雅黑; line-height: 21px;"><br class=""></div><div class="" style="font-family: 微软雅黑; line-height: 21px;">We plan to use glusterfs as the backend storage of our XenServer. We ran a benchmark test with fio today. The result is a little tricky. We noticed that the IOPS fluctuated widely, sometimes rose up to 6k, sometimes dropped down to 0. Can someone please take a look at this problem?</div><div class="" style="font-family: 微软雅黑; line-height: 21px;"><br class=""></div><div class="" style="font-family: 微软雅黑; line-height: 21px;">Below are the physical machines we used.</div><div class="" style="font-family: 微软雅黑; line-height: 21px;"><b class="">ProLiant DL380p Gen8</b> * 4</div><div class="" style="font-family: 微软雅黑; line-height: 21px;">each of them has a E5-2680 DUO Core CPU and 128GB RAM</div><div class="" style="font-family: 微软雅黑; line-height: 21px;">and the fio commands we use.</div><div class="" style="font-family: 微软雅黑; line-height: 21px;">fio --name=writebw --filename=test1234 --rw=randwrite --bs=8k --numjobs=1 --iodepth=1 --runtime=60 --norandommap --time_based --group_reporting --size=200G</div><div class="" style="font-family: 微软雅黑; line-height: 21px;"><br class=""></div><div class="" style="font-family: 微软雅黑; line-height: 21px;">Best Regards,</div><div class="" style="font-family: 微软雅黑; line-height: 21px;">Ge Jin</div></div></body></html>