<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Hello everyone,<br><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">I have the following situation. I put some read and write load on my test GlusterFS setup as follows:<br><br><pre style="margin:0px;padding:0px;max-height:30em;overflow:auto;white-space:pre-wrap;word-wrap:normal;word-break:normal;color:rgb(51,51,51);font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:16px;text-align:start;text-indent:0px;text-transform:none;word-spacing:0px;background-color:rgb(245,245,245)"># dd if=/dev/zero of=file2 bs=1M count=3000
# cat file2 > /dev/null
</pre><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">While doing the above I tried to gather some statistics and found out that 'status fd' doesn't really show anything and top read-perf/write-perf show only 0's. Here are the details:<br><br><pre style="margin:0px;padding:0px;max-height:30em;overflow:auto;white-space:pre-wrap;word-wrap:normal;word-break:normal;color:rgb(51,51,51);font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:16px;text-align:start;text-indent:0px;text-transform:none;word-spacing:0px;background-color:rgb(245,245,245)"># gluster volume status myvolume fd
FD tables for volume myvolume
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Brick : 10.12.10.7:/var/lib/glusterfs_disks/disk01/brick
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Brick : 10.12.10.8:/var/lib/glusterfs_disks/disk01/brick
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Brick : 10.12.10.9:/var/lib/glusterfs_disks/disk01/brick
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</pre><br><br><pre style="margin:0px;padding:0px;max-height:30em;overflow:auto;white-space:pre-wrap;word-wrap:normal;word-break:normal;color:rgb(51,51,51);font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:16px;text-align:start;text-indent:0px;text-transform:none;word-spacing:0px;background-color:rgb(245,245,245)"># gluster volume top myvolume write-perf
Brick: 10.12.10.7:/var/lib/glusterfs_disks/disk01/brick
MBps Filename Time
==== ======== ====
0 /file2 2015-02-11 21:01:57.797129
0 /file2 2015-02-11 21:00:39.605479
0 /file1 2015-02-11 20:59:13.890372
0 /file2 2015-02-11 20:47:48.062088
0 /file2 2015-02-11 20:45:46.005462
0 /file 2015-02-11 18:25:19.961485
Brick: 10.12.10.8:/var/lib/glusterfs_disks/disk01/brick
MBps Filename Time
==== ======== ====
0 /file2 2015-02-11 21:01:40.369140
0 /file2 2015-02-11 21:00:22.180878
0 /file1 2015-02-11 20:58:56.464305
0 /file2 2015-02-11 20:47:30.646403
0 /file2 2015-02-11 20:45:28.593213
0 /file 2015-02-11 18:25:02.669979
Brick: 10.12.10.9:/var/lib/glusterfs_disks/disk01/brick
MBps Filename Time
==== ======== ====
0 /file2 2015-02-11 21:02:09.552385
0 /file2 2015-02-11 21:00:51.357701
0 /file1 2015-02-11 20:59:25.623650
0 /file2 2015-02-11 20:47:59.816884
0 /file2 2015-02-11 20:45:57.744475
0 /file 2015-02-11 18:25:31.733212</pre><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">My setup is:<br><br><span style="font-family:monospace,monospace"># glusterfs -V<br>glusterfs 3.5.3 built on Nov 17 2014 15:48:52<br></span><br><br><span style="font-family:monospace,monospace"># gluster volume info<br>Volume Name: myvolume<br>Type: Replicate<br>Volume ID: e513a56f-049f-4c8e-bc75-4fb789e06c37<br>Status: Started<br>Number of Bricks: 1 x 3 = 3<br>Transport-type: tcp<br>Bricks:<br>Brick1: 10.12.10.7:/var/lib/glusterfs_disks/disk01/brick<br>Brick2: 10.12.10.8:/var/lib/glusterfs_disks/disk01/brick<br>Brick3: 10.12.10.9:/var/lib/glusterfs_disks/disk01/brick<br>Options Reconfigured:<br>network.ping-timeout: 10<br>nfs.disable: on<br>client.ssl: off<br>server.ssl: off<br></span></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br clear="all"></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Has anyone else experienced this?</div><br><div class="gmail_default" style="font-family:tahoma,sans-serif">Regards,</div>-- <br><div><div dir="ltr"><div><span style="font-family:tahoma,sans-serif">Rumen Telbizov</span><div><span style="font-family:tahoma,sans-serif"><a href="http://telbizov.com" target="_blank">Unix Systems Administrator</a></span></div></div></div></div>
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