Thanks Nils. What were the shortcomings that you were trying to improve ? Did any of the releases post v6.1 show any improvement ?
On Tue, Sep 1, 2020 at 10:01 AM Nils Goroll <[email protected]> wrote: > On 01/09/2020 15:52, Ameya Prabhu wrote: > > > We are seeing performance issues with Varnish’s file storage when the > storage reaches its capacity and Varnish starts LRU nuking. As soon as > varnish begins nuking objects, the number of worker threads(MAIN.threads) > starts increasing until it hits the limit(thread_pool_max) and remains > pinned on the thread_pool_max. This then leads to incoming requests getting > queued. > > some 12-18 months back, I made an effort to prototype improvements to the > LRU nuking, but never reached an anything mature enough for a pull request. > > That said, in my case I used malloc storage and the issue was high lock > contention. As you mention you are using file storage, I would suspect that > IO performance could be the bottleneck. > > There is no magic knob I would be aware of, other than using more RAM and > faster IO. > > Nils >
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