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Thu, 01 May 2025 20:18:17 -0700 (PDT) From: Nicholas Piggin To: Akihiko Odaki Cc: Nicholas Piggin , qemu-devel@nongnu.org, Dmitry Fleytman , Jason Wang , Sriram Yagnaraman , Fabiano Rosas , Laurent Vivier , Paolo Bonzini Subject: [PATCH v3 12/12] qtest/e1000e|igb: Test interrupt throttling in multiple_transfers test Date: Fri, 2 May 2025 13:17:04 +1000 Message-ID: <20250502031705.100768-13-npiggin@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250502031705.100768-1-npiggin@gmail.com> References: <20250502031705.100768-1-npiggin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=npiggin@gmail.com; helo=mail-pf1-x436.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1746155963202019100 Content-Type: text/plain; charset="utf-8" Enable interrupt throtling on one of the two queue interrupts used in the multiple_transfers test, to improve coverage. The number of interrupts for the e1000e test is reduced because it has a long minimum throttling delay so without reducing iterations throttling adds about 40s to the test runtime. Signed-off-by: Nicholas Piggin Reviewed-by: Fabiano Rosas --- tests/qtest/e1000e-test.c | 6 +++--- tests/qtest/igb-test.c | 4 ++++ 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/tests/qtest/e1000e-test.c b/tests/qtest/e1000e-test.c index a538c72cc84..645b31127f0 100644 --- a/tests/qtest/e1000e-test.c +++ b/tests/qtest/e1000e-test.c @@ -181,7 +181,7 @@ static void test_e1000e_rx(void *obj, void *data, QGues= tAllocator * alloc) static void test_e1000e_multiple_transfers(void *obj, void *data, QGuestAllocator *alloc) { - static const long iterations =3D 4 * 1024; + static const long iterations =3D 1 * 1024; long i; =20 QE1000E_PCI *e1000e =3D obj; @@ -194,8 +194,8 @@ static void test_e1000e_multiple_transfers(void *obj, v= oid *data, return; } =20 - /* Clear EITR because buggy QEMU throttle timer causes superfluous irq= s */ - e1000e_macreg_write(d, E1000_EITR + E1000E_RX0_MSG_ID * 4, 0); + /* Use EITR for one irq and disable it for the other, for testing */ + e1000e_macreg_write(d, E1000_EITR + E1000E_RX0_MSG_ID * 4, 500); e1000e_macreg_write(d, E1000_EITR + E1000E_TX0_MSG_ID * 4, 0); =20 for (i =3D 0; i < iterations; i++) { diff --git a/tests/qtest/igb-test.c b/tests/qtest/igb-test.c index 12cdd8b498a..c1877a77be4 100644 --- a/tests/qtest/igb-test.c +++ b/tests/qtest/igb-test.c @@ -198,6 +198,10 @@ static void test_igb_multiple_transfers(void *obj, voi= d *data, return; } =20 + /* Use EITR for one irq and disable it for the other, for testing */ + e1000e_macreg_write(d, E1000_EITR(E1000E_RX0_MSG_ID), 0); + e1000e_macreg_write(d, E1000_EITR(E1000E_TX0_MSG_ID), 10 << 2); /* 10u= s */ + for (i =3D 0; i < iterations; i++) { igb_send_verify(d, data, alloc); igb_receive_verify(d, data, alloc); --=20 2.47.1