{"comments":[{"comment":{"id":14712044,"creator_id":2492,"post_id":18426742,"content":"Pretty neat. Right now 1gbps downloads can often be bottlenecked by CPU, so a more efficient algorithm like zstd will probably speed up downloads.","removed":false,"published":"2025-02-18T08:02:02.134292Z","deleted":false,"ap_id":"https://lemmy.jlh.name/comment/5467145","local":false,"path":"0.14712044","distinguished":false,"language_id":37},"creator":{"id":2492,"name":"jlh","display_name":"Justin","banned":false,"published":"2023-06-10T11:53:05.718190Z","actor_id":"https://lemmy.jlh.name/u/jlh","bio":"(Justin)\n\nTech nerd from Sweden\n\nMatrix: [@jlh:jlh.name](https://matrix.to/#/@jlh:jlh.name)","local":false,"deleted":false,"bot_account":false,"instance_id":188},"post":{"id":18426742,"name":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.","url":"https://bsky.app/profile/xpaw.me/post/3lifcxm5bfc2p","creator_id":367168,"community_id":6598,"removed":false,"locked":false,"published":"2025-02-18T07:18:21.018815Z","deleted":false,"nsfw":false,"embed_title":"Pavel Djundik (@xpaw.me)","embed_description":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.\n\nWonder how much of an overall improvement it will be.","ap_id":"https://lemmy.ca/post/39321127","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":6598,"name":"pcgaming","title":"PC Gaming","description":"For PC gaming news and discussion.\n[PCGamingWiki](https://www.pcgamingwiki.com/wiki/Home)\n\n***Rules:***\n\n0. Be Respectful.\n1. No Spam or Porn.\n2. No Advertising.\n3. No Memes.\n4. No Tech Support.\n5. No questions about buying/building computers.\n6. No game suggestions, friend requests, surveys, or begging.\n7. No Let's Plays, streams, highlight reels/montages, random videos or shorts.\n8. No off-topic posts/comments, within reason.\n9. Use the original source, no clickbait titles, no duplicates. \n(Submissions should be from the original source if possible, unless from paywalled or non-english sources.\nIf the title is clickbait or lacks context you may **lightly** edit the title.) ","removed":false,"published":"2023-06-09T12:59:02.488340Z","updated":"2024-11-15T02:07:03.883161Z","deleted":false,"nsfw":false,"actor_id":"https://lemmy.ca/c/pcgaming","local":false,"icon":"https://lemmy.ca/pictrs/image/7b0211f0-7266-4e13-9d26-8c3e6126af62.png","banner":"https://lemmy.ca/pictrs/image/6765ce97-d932-4125-91d9-c6d0492098eb.png","hidden":false,"posting_restricted_to_mods":false,"instance_id":37,"visibility":"Public"},"counts":{"comment_id":14712044,"score":35,"upvotes":35,"downvotes":0,"published":"2025-02-18T08:02:02.134292Z","child_count":0},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":14711834,"creator_id":11138134,"post_id":18426742,"content":"I don't know much about compression algorithms. What are the benefits of doing this?","removed":false,"published":"2025-02-18T07:39:01.729161Z","deleted":false,"ap_id":"https://lemmy.world/comment/15162726","local":false,"path":"0.14711834","distinguished":false,"language_id":37},"creator":{"id":11138134,"name":"inzen","banned":false,"published":"2024-08-10T08:26:04.900619Z","actor_id":"https://lemmy.world/u/inzen","local":false,"deleted":false,"bot_account":false,"instance_id":24},"post":{"id":18426742,"name":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.","url":"https://bsky.app/profile/xpaw.me/post/3lifcxm5bfc2p","creator_id":367168,"community_id":6598,"removed":false,"locked":false,"published":"2025-02-18T07:18:21.018815Z","deleted":false,"nsfw":false,"embed_title":"Pavel Djundik (@xpaw.me)","embed_description":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.\n\nWonder how much of an overall improvement it will be.","ap_id":"https://lemmy.ca/post/39321127","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":6598,"name":"pcgaming","title":"PC Gaming","description":"For PC gaming news and discussion.\n[PCGamingWiki](https://www.pcgamingwiki.com/wiki/Home)\n\n***Rules:***\n\n0. 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","removed":false,"published":"2023-06-09T12:59:02.488340Z","updated":"2024-11-15T02:07:03.883161Z","deleted":false,"nsfw":false,"actor_id":"https://lemmy.ca/c/pcgaming","local":false,"icon":"https://lemmy.ca/pictrs/image/7b0211f0-7266-4e13-9d26-8c3e6126af62.png","banner":"https://lemmy.ca/pictrs/image/6765ce97-d932-4125-91d9-c6d0492098eb.png","hidden":false,"posting_restricted_to_mods":false,"instance_id":37,"visibility":"Public"},"counts":{"comment_id":14711834,"score":17,"upvotes":17,"downvotes":0,"published":"2025-02-18T07:39:01.729161Z","child_count":9},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":14716615,"creator_id":22561,"post_id":18426742,"content":"LZMA nuts lmao gottem","removed":false,"published":"2025-02-18T14:45:48.853990Z","deleted":false,"ap_id":"https://lemmy.world/comment/15167353","local":false,"path":"0.14716615","distinguished":false,"language_id":37},"creator":{"id":22561,"name":"edgemaster72","avatar":"https://lemmy.world/pictrs/image/b6f4b0a6-6516-49b6-bcbf-b402be5fb564.jpeg","banned":false,"published":"2023-06-16T22:05:50.065790Z","actor_id":"https://lemmy.world/u/edgemaster72","local":false,"deleted":false,"bot_account":false,"instance_id":24},"post":{"id":18426742,"name":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.","url":"https://bsky.app/profile/xpaw.me/post/3lifcxm5bfc2p","creator_id":367168,"community_id":6598,"removed":false,"locked":false,"published":"2025-02-18T07:18:21.018815Z","deleted":false,"nsfw":false,"embed_title":"Pavel Djundik (@xpaw.me)","embed_description":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.\n\nWonder how much of an overall improvement it will be.","ap_id":"https://lemmy.ca/post/39321127","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":6598,"name":"pcgaming","title":"PC Gaming","description":"For PC gaming news and discussion.\n[PCGamingWiki](https://www.pcgamingwiki.com/wiki/Home)\n\n***Rules:***\n\n0. 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","removed":false,"published":"2023-06-09T12:59:02.488340Z","updated":"2024-11-15T02:07:03.883161Z","deleted":false,"nsfw":false,"actor_id":"https://lemmy.ca/c/pcgaming","local":false,"icon":"https://lemmy.ca/pictrs/image/7b0211f0-7266-4e13-9d26-8c3e6126af62.png","banner":"https://lemmy.ca/pictrs/image/6765ce97-d932-4125-91d9-c6d0492098eb.png","hidden":false,"posting_restricted_to_mods":false,"instance_id":37,"visibility":"Public"},"counts":{"comment_id":14716615,"score":11,"upvotes":12,"downvotes":1,"published":"2025-02-18T14:45:48.853990Z","child_count":0},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":14717485,"creator_id":881145,"post_id":18426742,"content":"So if I'm reading this correctly, they are trading slightly larger downloads for considerably faster overall install speeds.\n\nMakes a lot of sense as most internet connections nowadays can handle the added bandwidth.","removed":false,"published":"2025-02-18T15:44:33.589661Z","deleted":false,"ap_id":"https://sh.itjust.works/comment/16777931","local":false,"path":"0.14717485","distinguished":false,"language_id":37},"creator":{"id":881145,"name":"DaCrazyJamez","banned":false,"published":"2023-06-27T23:27:28.218323Z","actor_id":"https://sh.itjust.works/u/DaCrazyJamez","local":false,"deleted":false,"bot_account":false,"instance_id":32},"post":{"id":18426742,"name":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.","url":"https://bsky.app/profile/xpaw.me/post/3lifcxm5bfc2p","creator_id":367168,"community_id":6598,"removed":false,"locked":false,"published":"2025-02-18T07:18:21.018815Z","deleted":false,"nsfw":false,"embed_title":"Pavel Djundik (@xpaw.me)","embed_description":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.\n\nWonder how much of an overall improvement it will be.","ap_id":"https://lemmy.ca/post/39321127","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":6598,"name":"pcgaming","title":"PC Gaming","description":"For PC gaming news and discussion.\n[PCGamingWiki](https://www.pcgamingwiki.com/wiki/Home)\n\n***Rules:***\n\n0. Be Respectful.\n1. No Spam or Porn.\n2. No Advertising.\n3. No Memes.\n4. No Tech Support.\n5. No questions about buying/building computers.\n6. No game suggestions, friend requests, surveys, or begging.\n7. No Let's Plays, streams, highlight reels/montages, random videos or shorts.\n8. No off-topic posts/comments, within reason.\n9. Use the original source, no clickbait titles, no duplicates. \n(Submissions should be from the original source if possible, unless from paywalled or non-english sources.\nIf the title is clickbait or lacks context you may **lightly** edit the title.) ","removed":false,"published":"2023-06-09T12:59:02.488340Z","updated":"2024-11-15T02:07:03.883161Z","deleted":false,"nsfw":false,"actor_id":"https://lemmy.ca/c/pcgaming","local":false,"icon":"https://lemmy.ca/pictrs/image/7b0211f0-7266-4e13-9d26-8c3e6126af62.png","banner":"https://lemmy.ca/pictrs/image/6765ce97-d932-4125-91d9-c6d0492098eb.png","hidden":false,"posting_restricted_to_mods":false,"instance_id":37,"visibility":"Public"},"counts":{"comment_id":14717485,"score":11,"upvotes":11,"downvotes":0,"published":"2025-02-18T15:44:33.589661Z","child_count":1},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":14741440,"creator_id":5768113,"post_id":18426742,"content":"So network bandwidth became cheaper than cpu ? Clearly CPUs are stagnating.","removed":false,"published":"2025-02-19T17:24:07.965738Z","deleted":false,"ap_id":"https://lemmy.world/comment/15190981","local":false,"path":"0.14741440","distinguished":false,"language_id":37},"creator":{"id":5768113,"name":"vane","banned":false,"published":"2023-11-26T05:20:39.335063Z","actor_id":"https://lemmy.world/u/vane","local":false,"deleted":false,"bot_account":false,"instance_id":24},"post":{"id":18426742,"name":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.","url":"https://bsky.app/profile/xpaw.me/post/3lifcxm5bfc2p","creator_id":367168,"community_id":6598,"removed":false,"locked":false,"published":"2025-02-18T07:18:21.018815Z","deleted":false,"nsfw":false,"embed_title":"Pavel Djundik (@xpaw.me)","embed_description":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.\n\nWonder how much of an overall improvement it will be.","ap_id":"https://lemmy.ca/post/39321127","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":6598,"name":"pcgaming","title":"PC Gaming","description":"For PC gaming news and discussion.\n[PCGamingWiki](https://www.pcgamingwiki.com/wiki/Home)\n\n***Rules:***\n\n0. 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","removed":false,"published":"2023-06-09T12:59:02.488340Z","updated":"2024-11-15T02:07:03.883161Z","deleted":false,"nsfw":false,"actor_id":"https://lemmy.ca/c/pcgaming","local":false,"icon":"https://lemmy.ca/pictrs/image/7b0211f0-7266-4e13-9d26-8c3e6126af62.png","banner":"https://lemmy.ca/pictrs/image/6765ce97-d932-4125-91d9-c6d0492098eb.png","hidden":false,"posting_restricted_to_mods":false,"instance_id":37,"visibility":"Public"},"counts":{"comment_id":14741440,"score":3,"upvotes":3,"downvotes":0,"published":"2025-02-19T17:24:07.965738Z","child_count":0},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":14711960,"creator_id":1464264,"post_id":18426742,"content":"Better compression -> faster downloads","removed":false,"published":"2025-02-18T07:51:50.869013Z","deleted":false,"ap_id":"https://lemmy.world/comment/15162847","local":false,"path":"0.14711834.14711960","distinguished":false,"language_id":37},"creator":{"id":1464264,"name":"FooBarrington","banned":false,"published":"2023-08-17T20:51:59.605622Z","actor_id":"https://lemmy.world/u/FooBarrington","local":false,"deleted":false,"bot_account":false,"instance_id":24},"post":{"id":18426742,"name":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.","url":"https://bsky.app/profile/xpaw.me/post/3lifcxm5bfc2p","creator_id":367168,"community_id":6598,"removed":false,"locked":false,"published":"2025-02-18T07:18:21.018815Z","deleted":false,"nsfw":false,"embed_title":"Pavel Djundik (@xpaw.me)","embed_description":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.\n\nWonder how much of an overall improvement it will be.","ap_id":"https://lemmy.ca/post/39321127","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":6598,"name":"pcgaming","title":"PC Gaming","description":"For PC gaming news and discussion.\n[PCGamingWiki](https://www.pcgamingwiki.com/wiki/Home)\n\n***Rules:***\n\n0. 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","removed":false,"published":"2023-06-09T12:59:02.488340Z","updated":"2024-11-15T02:07:03.883161Z","deleted":false,"nsfw":false,"actor_id":"https://lemmy.ca/c/pcgaming","local":false,"icon":"https://lemmy.ca/pictrs/image/7b0211f0-7266-4e13-9d26-8c3e6126af62.png","banner":"https://lemmy.ca/pictrs/image/6765ce97-d932-4125-91d9-c6d0492098eb.png","hidden":false,"posting_restricted_to_mods":false,"instance_id":37,"visibility":"Public"},"counts":{"comment_id":14711960,"score":30,"upvotes":30,"downvotes":0,"published":"2025-02-18T07:51:50.869013Z","child_count":1},"creator_banned_from_community":false,"banned_from_community":false,"creator_is_moderator":false,"creator_is_admin":false,"subscribed":"NotSubscribed","saved":false,"creator_blocked":false},{"comment":{"id":14716197,"creator_id":678769,"post_id":18426742,"content":"zstd is generally stupidly fast and quite efficient. \n\nprobably not *exactly* how steam does it, or even close, but as a quick & dirty comparison: compressed and decompressed a random CD.iso (~375 MB) I had laying about, using zstd and lzma, using 1MB dictitionary:\n\ntest system: Arch linux (btw, as is customary) laptop with AMD Ryzen 7 PRO 7840U cpu.\n\nused commands & results:\n\nZstd:\n\n```bash\n# compress (--maxdict 1048576 - sets the used compression dictionary to 1MB) :\n% time zstd --maxdict 1048576 < DISC.ISO > DISC.zstd\nzstd --maxdict 1048576 < DISC.ISO > DISC.zstd 1,83s user 0,42s system 120% cpu 1,873 total\n\n# decompress:\n% time zstd -d < DISC.zstd > /dev/null\nzstd -d < DISC.zstd > /dev/null 0,36s user 0,08s system 121% cpu 0,362 total\n```\n\n* resulting archive was 229 MB, ~61% of original. \n* ~1.9s to compress\n* ~0.4s to decompress\n\nSo, pretty quick all around.\n\nLzma:\n\n```bash\n# compress (the -1e argument implies setting preset which uses 1MB dictionary size):\n% time lzma -1e < DISC.ISO > DISC.lzma\nlzma -1e < DISC.ISO > DISC.lzma 172,65s user 0,91s system 98% cpu 2:56,16 total\n\n#decompress:\n% time lzma -d < DISC.lzma > /dev/null\nlzma -d < DISC.lzma > /dev/null 4,37s user 0,08s system 98% cpu 4,493 total\n```\n\n* ~179 MB archive, ~48% of original-\n* ~3min to compress\n* ~4.5s to decompress\n\nThis one felt like forever to compress.\n\nSo, my takeaway here is that the time cost to compress is enough to waste a bit of disk space for sake of speed.\n\nand lastly, just because I was curious, ran zstd on max compression settings too:\n\n```bash\n% time zstd --maxdict 1048576 -9 < DISC.ISO > DISC.2.zstd\nzstd --maxdict 1048576 -9 < DISC.ISO > DISC.2.zstd 10,98s user 0,40s system 102% cpu 11,129 total\n\n% time zstd -d < DISC.2.zstd > /dev/null \nzstd -d < DISC.2.zstd > /dev/null 0,47s user 0,07s system 111% cpu 0,488 total\n```\n\n~11s compression time, ~0.5s decompression, archive size was ~211 MB.\n\ndeemed it wasn't nescessary to spend time to compress the archive with lzma's max settings.\n\nNow I'll be taking notes when people start correcting me & explaining why these \"benchmarks\" are wrong :P\n\nedit:\n\ngoofed a bit with the max compression settings, added the same dictionary size.\n\nedit 2: one of the reasons for the change might be syncing files between their servers. IIRC zstd can be compressed to be \"rsync compatible\", allowing partial file syncs instead of syncing entire file, saving in bandwidth. Not sure if lzma does the same.","removed":false,"published":"2025-02-18T14:18:59.538417Z","updated":"2025-02-18T15:58:06.675991Z","deleted":false,"ap_id":"https://sopuli.xyz/comment/14750239","local":false,"path":"0.14711834.14716197","distinguished":false,"language_id":37},"creator":{"id":678769,"name":"Malix","avatar":"https://sopuli.xyz/pictrs/image/50c6649f-f80e-40b9-8fe2-e3b550cdd3ce.png","banned":false,"published":"2023-07-24T08:56:00.560772Z","actor_id":"https://sopuli.xyz/u/Malix","bio":"The worst kind of an Internet-herpaderp.\nInternet-urpo pahimmasta päästä.","local":false,"banner":"https://sopuli.xyz/pictrs/image/43e5f087-6ca1-4e7e-aa20-742ddeb3cad1.webp","deleted":false,"bot_account":false,"instance_id":13},"post":{"id":18426742,"name":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.","url":"https://bsky.app/profile/xpaw.me/post/3lifcxm5bfc2p","creator_id":367168,"community_id":6598,"removed":false,"locked":false,"published":"2025-02-18T07:18:21.018815Z","deleted":false,"nsfw":false,"embed_title":"Pavel Djundik (@xpaw.me)","embed_description":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.\n\nWonder how much of an overall improvement it will be.","ap_id":"https://lemmy.ca/post/39321127","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":6598,"name":"pcgaming","title":"PC Gaming","description":"For PC gaming news and discussion.\n[PCGamingWiki](https://www.pcgamingwiki.com/wiki/Home)\n\n***Rules:***\n\n0. 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LZMA's strength is that it compresses very small but its weakness is that it's extremely CPU-intensive to decompress. Switching to ZSTD will actually result in larger downloads, but the massively reduced CPU load of decompressing ZSTD will mean it's faster for most users. Instead of just counting the time it takes for the data to transfer, this is factoring in download time + decompression time. Even though ZSTD is somewhat *less* efficient in terms of compression ratio, it's far *more* efficient computationally.","removed":false,"published":"2025-02-18T11:11:01Z","deleted":false,"ap_id":"https://fedia.io/m/pcgaming@lemmy.ca/t/1811378/-/comment/9435733","local":false,"path":"0.14711834.14712295.14713851","distinguished":false,"language_id":0},"creator":{"id":12256989,"name":"vaguerant","display_name":"vaguerant","avatar":"https://fedia.io/media/a0/29/a02999f63a1107036de7c3693e98a9347c91c17c6e74c122d0649f70b5ac22b5.jpg","banned":false,"published":"2024-09-24T19:46:51Z","actor_id":"https://fedia.io/u/vaguerant","local":false,"banner":"https://fedia.io/media/03/a1/03a1728fea35e1b777243212e1f2d6960bb8d344c164446f0c9599c861ffe624.png","deleted":false,"bot_account":false,"instance_id":34},"post":{"id":18426742,"name":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.","url":"https://bsky.app/profile/xpaw.me/post/3lifcxm5bfc2p","creator_id":367168,"community_id":6598,"removed":false,"locked":false,"published":"2025-02-18T07:18:21.018815Z","deleted":false,"nsfw":false,"embed_title":"Pavel Djundik (@xpaw.me)","embed_description":"Steam is working on adding zstd compression for game chunks (every game file is split into 1MB), it currently uses LZMA.\n\nWonder how much of an overall improvement it will be.","ap_id":"https://lemmy.ca/post/39321127","local":false,"language_id":37,"featured_community":false,"featured_local":false,"url_content_type":"text/html; charset=utf-8"},"community":{"id":6598,"name":"pcgaming","title":"PC Gaming","description":"For PC gaming news and discussion.\n[PCGamingWiki](https://www.pcgamingwiki.com/wiki/Home)\n\n***Rules:***\n\n0. 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