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authorChristian Krinitsin <mail@krinitsin.com>2025-06-30 12:34:26 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-30 12:35:44 +0000
commit25f8033d556aa17afaea4a5196ea7a69fe248320 (patch)
tree0f056db167683be54ea1e5e72d29d6069af55e7d /results/classifier/deepseek-2-tmp/reasoning/network/1312
parent8e6da29e4ee5fc14bc1cc816a24f21271f14090d (diff)
downloademulator-bug-study-25f8033d556aa17afaea4a5196ea7a69fe248320.tar.gz
emulator-bug-study-25f8033d556aa17afaea4a5196ea7a69fe248320.zip
add new temporary deepseek-r1:14b results
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+<think>
+Okay, so I'm trying to classify this bug report for QEMU. Let's see what it's about.
+
+The user mentioned TCP performance problems related to GSO/TSO, MSS, and 8139. Oh right, 8139 is the RTL8139 NIC model in QEMU. The issue is that the MTU handling isn't working correctly for guests using this NIC. They're experiencing low throughput because the system ignores PMTUD and locks to a static MTU of 1500 bytes.
+
+Looking at the categories: network, GSO/TSO are all related to networking performance. The problem revolves around how the virtualized network interface card (NIC) handles Maximum Segment Size (MSS) and MTU discovery. Since this is affecting TCP offloading and network throughput, it's definitely a networking issue.
+
+The steps to reproduce involve setting up a guest with RTL8139 NIC and testing from a client behind a sub-1500MTU link. The symptoms are low bandwidth and retransmits, which points to network configuration and handling problems.
+
+The user also referenced a QEMU-devel thread from six years ago about this issue, indicating it's an existing problem in the networking component of QEMU. They didn't test the patch but noted that the code hasn't changed much since then.
+
+So, considering all this, the bug is related to network performance, specifically how MTU and MSS are handled by the 8139 NIC driver in QEMU. Therefore, the appropriate category should be 'network'.
+</think>
+
+network
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