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    <p>Out of curiosity, if you disable the zil through the evil zfs
      tuning wiki mechanisms (diagnostic purposes only), does it
      dramatically help?</p>
    <p>If not, there's something else going on, if yes, it could be that
      the l2arc and zil are interfering with each other (I could imagine
      that the l2arc is causing a lot of need for erasing of blocks on
      the SSD which could be dramatically slowing things down. I haven't
      been following the implementation of TRIM support and any
      outstanding issues)<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 8/23/2018 1:39 PM, Lee Damon wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CABXAO0LX=XqCv_4Zd4RnE+Mri+81-fH7Z=Kvrwth=pM-GgPibw@mail.gmail.com">
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      <div dir="ltr">Do you mean c0t55CD2E414EC0FF43d0?
        <div><br>
        </div>
        <div>It's an SSD. It just has a long name because it's in a
          hotswap sled instead being inside the chassis.            </div>
        <div>    Hardware properties:</div>
        <div>                name='devid' type=string items=1</div>
        <div>                    value='id1,sd@n55cd2e414ec0ff43'</div>
        <div>                name='class' type=string items=1</div>
        <div>                    value='scsi'</div>
        <div>                name='inquiry-revision-id' type=string
          items=1</div>
        <div>                    value='0121'</div>
        <div>                name='inquiry-product-id' type=string
          items=1</div>
        <div>                    value='INTEL SSDSC2KG48'</div>
        <div>                name='inquiry-vendor-id' type=string
          items=1</div>
        <div>                    value='ATA'</div>
        <div>                name='inquiry-device-type' type=int items=1</div>
        <div>                    value=00000000</div>
        <div>                name='pm-capable' type=int items=1</div>
        <div>                    value=00000001</div>
        <div>                name='compatible' type=string items=4</div>
        <div>                   
          value='scsiclass,00.vATA.pINTEL_SSDSC2KG48.r0121' +
          'scsiclass,00.vATA.pINTEL_SSDSC2KG48' + 'scsiclass,00' +
          'scsiclass'</div>
        <div>                name='client-guid' type=string items=1</div>
        <div>                    value='55cd2e414ec0ff43'</div>
        <div>nomad</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">On Thu, Aug 23, 2018 at 10:35 AM Bob Friesenhahn
          <<a href="mailto:bfriesen@simple.dallas.tx.us"
            moz-do-not-send="true">bfriesen@simple.dallas.tx.us</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">Lee,<br>
          <br>
          Just in case you did not see my follow-up post, it looks like
          there is <br>
          an error in your pool configuration that a large spinning disk
          was <br>
          added as a log device rather than a SSD as was intended. 
          Luckily it <br>
          should be possible to fix this without restarting the pool
          from <br>
          scratch.<br>
          <br>
          Bob<br>
          -- <br>
          Bob Friesenhahn<br>
          <a href="mailto:bfriesen@simple.dallas.tx.us" target="_blank"
            moz-do-not-send="true">bfriesen@simple.dallas.tx.us</a>, <a
            href="http://www.simplesystems.org/users/bfriesen/"
            rel="noreferrer" target="_blank" moz-do-not-send="true">http://www.simplesystems.org/users/bfriesen/</a><br>
          GraphicsMagick Maintainer,    <a
            href="http://www.GraphicsMagick.org/" rel="noreferrer"
            target="_blank" moz-do-not-send="true">http://www.GraphicsMagick.org/</a><br>
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