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llvm_nvme_fuzz: unaffinitize fuzzing thread

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We do not want the fuzzing thread to compete with
one of the nvmf target cores - otherwise they will
keep preempting each other and drastically reducing
the operation rate.

This sped up the operation rate approximately 20x
in my test VM.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I75d8c59d75e49cafaf7ee94f4796f9184b690647
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12403
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Dong Yi <dongx.yi@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
This commit is contained in:
Jim Harris 2022-04-26 19:51:40 +00:00 committed by Tomasz Zawadzki
parent 17dd532ff7
commit 9d8f841f32
1 changed files with 1 additions and 0 deletions
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test/app/fuzz/llvm_nvme_fuzz/llvm_nvme_fuzz.c
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@ -606,6 +606,7 @@ start_fuzzer(void *ctx)
int argc = SPDK_COUNTOF(_argv); int argc = SPDK_COUNTOF(_argv);
uint32_t len; uint32_t len;
spdk_unaffinitize_thread();
len = MAX_COMMANDS * g_fuzzer->bytes_per_cmd; len = MAX_COMMANDS * g_fuzzer->bytes_per_cmd;
snprintf(len_str, sizeof(len_str), "-max_len=%d", len); snprintf(len_str, sizeof(len_str), "-max_len=%d", len);
argv[argc - 3] = len_str; argv[argc - 3] = len_str;