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   April 21, 2019  
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[01:27:40] <Smithx10> LeftWing: Wanna make the world a better place ?
[01:27:57] <Smithx10> Implement fpga hw offload for postgresql :)
[01:31:29] <richlowe> and replace my baseball related enums with optimized builtins
[01:32:43] <Smithx10> Speaking of dreams, didn’t someone do work to allow Postgres to do direct io to zfs
[01:32:56] <Smithx10> Or bypass posix completely ?
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[02:26:13] <LeftWing> Smithx10: I'm too busy working on a Virtio SCSI driver. :P
[02:26:33] <Smithx10> Winner
[02:26:47] <LeftWing> Successful INQUIRY command this afternoon!
[02:26:47] <Smithx10> ./crawls back into dream land
[02:31:28] <jbk> i would imagine any such work for postgres would almost certainly end up being a fork
[02:38:47] <Smithx10> Jbk, I saw https://swarm64.com/
[02:39:12] <Smithx10> Started looking at getting a fpga to play with
[02:39:28] <Smithx10> I wonder how hard they are to program to do random things
[02:39:55] <Smithx10> Might be a cool little hobby project to learn about puters
[02:39:57] <jbk> well all the tools have traditionally been _highly_ propritary (and thus quirky)
[02:40:06] <jbk> I don't know if Intel has a better track record there or not
[02:40:15] <jbk> (FPGA tools)
[02:40:27] <Smithx10> With the QAT stuff or whatever
[02:41:17] <Smithx10> I saw someone offloading zfs compression with qat
[02:47:33] <sjorge> LeftWing: is that a different one than virtuo block?
[02:47:35] <LeftWing> If I recall correctly, QAT is a specific ASIC with acceleration for specific functions like gzip
[02:48:29] <LeftWing> sjorge: Yes, it's basically like a simple SCSI HBA. It will work with "sd" like a SAS HBA.
[02:49:17] <LeftWing> Critically it supports multiple block devices behind one PCI device, as well as hot plug of block devices without it becoming a PCI hot plug problem.
[02:49:38] <LeftWing> It's required for Google Compute Engine guests.
[02:50:17] <sjorge> Oh so more disks would be supported that way
[02:53:59] <LeftWing> Yes. They appear to have first class support for attaching and removing lots of persistent disks. I can see the hotplug notifications from the HBA already, so I think we'll be able to support them as well as we do with hardware today.
[02:54:45] <LeftWing> First I really need to be able to access the boot drive haha
[02:57:11] <jbk> does that mean adding controlq support to virtio?
[02:57:25] <jbk> (it seemed like it was half there in the source)
[02:59:47] <richlowe> I seem to remember a couple of projects that did io bypassing the zpl too
[02:59:53] <richlowe> but can't remember anymore than I think they existed
[03:01:46] <jbk> it would be interesting since it could in theory allow for better semantics around I/O
[03:02:25] <jbk> though I suppose a lot of it could probably be expressed w/ some extentions to listio since a lot of it is probably of the form "do these I/Os to these files atomically" and such
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[03:32:16] <LeftWing> jbk: There is a "control" queue for the SCSI device, but it's just a regular virtqueue with particular entry layouts.
[03:32:40] <LeftWing> It's mostly for SCSI task management functions
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[04:48:27] <jbk> heh.. always love it when you've spent waaay to much time on something then realize a far simpler solution obviating the earlier work :P
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[08:59:36] <leoric> gnome-mount is broken...
[08:59:50] <leoric> sorry, wrong channel
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[17:30:16] <gitomat> [illumos-gate] 10695 import zlib-1.2.11 -- Toomas Soome <tsoome at me dot com>
[17:30:17] <gitomat> [illumos-gate] 10696 loader: use zlib-1.2.11 -- Toomas Soome <tsoome at me dot com>
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[18:24:19] <sjorge> LeftWing: ooh nice!
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[21:45:20] <despair86> richlowe, jbk: i mean, the version string *does* indicate Solaris 5 *shrugs*.....then according to the git log a bunch of PDP hacks were stripped so that's nice
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   April 21, 2019  
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