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also... could you explain this part for me? "<span style="color: rgb(32, 31, 30); font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif; font-size: 15px; background-color: rgb(255, 255, 255); display: inline !important">so
it had to truncate it and throw it away"</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span style="color: rgb(32, 31, 30); font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif; font-size: 15px; background-color: rgb(255, 255, 255); display: inline !important">Why
does it have to truncate it? Why not avoid caching it, and returning it as is, from the backend, untouched?</span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Guillaume Quintard <guillaume@varnish-software.com><br>
<b>Sent:</b> Friday, May 8, 2020 7:34 PM<br>
<b>To:</b> Batanun B <batanun@hotmail.com><br>
<b>Cc:</b> varnish-misc@varnish-cache.org <varnish-misc@varnish-cache.org><br>
<b>Subject:</b> Re: Varnish intermittently returns incomplete images</font>
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<div dir="ltr">Hi,
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<div>Do you have objects that are sensibly smaller that your images in your cache?</div>
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<div>What you are describing sounds like LRU failure (check nuke_limit in "varnishadm param.show"), basically, on a miss, varnish couldn't evict enough objects and make room for the new object, so it had to truncate it and throw it away.</div>
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<div>If that's the issue, you can increase nuke_limit, or get a bigger cache, or segregate small and large objects into different storages.</div>
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<div>-- <br>
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Guillaume Quintard<br>
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<div dir="ltr" class="x_gmail_attr">On Fri, May 8, 2020 at 10:14 AM Batanun B <<a href="mailto:batanun@hotmail.com">batanun@hotmail.com</a>> wrote:<br>
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Our Varnish (test environment) intermittently returns incomplete images. So the binary content is not complete. When requesting the image from the backend directly (using curl), the complete image is returned every time (I tested 1000 times using a script).</div>
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This happens intermittently. Sometimes Varnish returns the complete image, sometimes half of it, sometimes 20% etc... The incomplete image is returned quickly, so I don't think there is a timeout involved (we have not configured any specific timeout in varnish).</div>
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I see nothing special in varnishlog when this happens. But I don't know how to troubleshoot this in a good way. Any suggestions?</div>
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