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+id = 1321
+title = "qemu-system-i386 runs slow after upgrading legacy project from qemu 2.9.0  to 7.1.0"
+state = "closed"
+created_at = "2022-11-18T07:15:19.339Z"
+closed_at = "2025-02-10T15:53:25.238Z"
+labels = ["Regression", "icount", "workflow::Needs Info"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1321"
+host-os = "freedos"
+host-arch = "x86_64"
+qemu-version = "2.9.0/7.1.0"
+guest-os = "freedos"
+guest-arch = "i386"
+description = """Using several custom serial and irq devices including timers.
+The same code (after some customisation in order to compile with new 7.1.0 API and meson build system runs about 50% slower.
+We had to remove "-icount 4" switch which worked fine with 2.9.0 just to get to this point.
+Even running with multi-threaded tcg did not help.
+We don't use the new ptimer API but rather the old QEMUTimer.
+Any suggestions to why we encounter this vast performance degradation?"""
+reproduce = "n/a"
+additional = "n/a"