test/eal: set memory channel config only in dedicated test

The -n option is an optimisation configuration option that defaults to 0.
Such a default value makes the mempool library distributes objects as if
there was 4 memory channels, so -n 4 is the same as the default behavior.

This parameter was mandatory a long time ago, but has been optional for
a while. We check that setting this value works fine in its own test.
Remove it everywhere else.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Aaron Conole <aconole@redhat.com>

diff --git a/app/test/autotest.py b/app/test/autotest.py
index 46c469e..b42f488 100644 (file)
--- a/app/test/autotest.py
+++ b/app/test/autotest.py
@@ -32,7 +32,7 @@ if len(sys.argv) > 3:
     else:
         test_whitelist = testlist
 
-cmdline = "%s -c f -n 4" % (sys.argv[1])
+cmdline = "%s -c f" % (sys.argv[1])
 
 print(cmdline)
 

diff --git a/app/test/meson.build b/app/test/meson.build
index 7628ed9..a9dddf8 100644 (file)
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -368,7 +368,7 @@ endif
 
 num_cores_arg = '-l ' + num_cores
 
-test_args = [num_cores_arg, '-n 4']
+test_args = [num_cores_arg]
 foreach arg : fast_parallel_test_names
        if host_machine.system() == 'linux'
                test(arg, dpdk_test,

diff --git a/app/test/test_eal_flags.c b/app/test/test_eal_flags.c
index 9112c96..e82e56a 100644 (file)
--- a/app/test/test_eal_flags.c
+++ b/app/test/test_eal_flags.c
@@ -245,25 +245,25 @@ test_whitelist_flag(void)
 #endif
 
        const char *wlinval[][11] = {
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+               {prgname, prefix, mp_flag, "-c", "1",
                                pci_whitelist, "error", "", ""},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+               {prgname, prefix, mp_flag, "-c", "1",
                                pci_whitelist, "0:0:0", "", ""},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+               {prgname, prefix, mp_flag, "-c", "1",
                                pci_whitelist, "0:error:0.1", "", ""},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+               {prgname, prefix, mp_flag, "-c", "1",
                                pci_whitelist, "0:0:0.1error", "", ""},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+               {prgname, prefix, mp_flag, "-c", "1",
                                pci_whitelist, "error0:0:0.1", "", ""},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+               {prgname, prefix, mp_flag, "-c", "1",
                                pci_whitelist, "0:0:0.1.2", "", ""},
        };
        /* Test with valid whitelist option */
-       const char *wlval1[] = {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+       const char *wlval1[] = {prgname, prefix, mp_flag, "-c", "1",
                        pci_whitelist, "00FF:09:0B.3"};
-       const char *wlval2[] = {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+       const char *wlval2[] = {prgname, prefix, mp_flag, "-c", "1",
                        pci_whitelist, "09:0B.3", pci_whitelist, "0a:0b.1"};
-       const char *wlval3[] = {prgname, prefix, mp_flag, "-n", "1", "-c", "1",
+       const char *wlval3[] = {prgname, prefix, mp_flag, "-c", "1",
                        pci_whitelist, "09:0B.3,type=test",
                        pci_whitelist, "08:00.1,type=normal",
        };
@@ -311,15 +311,16 @@ test_invalid_b_flag(void)
 #endif
 
        const char *blinval[][9] = {
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-b", "error"},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-b", "0:0:0"},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-b", "0:error:0.1"},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-b", "0:0:0.1error"},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-b", "error0:0:0.1"},
-               {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-b", "0:0:0.1.2"},
+               {prgname, prefix, mp_flag, "-c", "1", "-b", "error"},
+               {prgname, prefix, mp_flag, "-c", "1", "-b", "0:0:0"},
+               {prgname, prefix, mp_flag, "-c", "1", "-b", "0:error:0.1"},
+               {prgname, prefix, mp_flag, "-c", "1", "-b", "0:0:0.1error"},
+               {prgname, prefix, mp_flag, "-c", "1", "-b", "error0:0:0.1"},
+               {prgname, prefix, mp_flag, "-c", "1", "-b", "0:0:0.1.2"},
        };
        /* Test with valid blacklist option */
-       const char *blval[] = {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-b", "FF:09:0B.3"};
+       const char *blval[] = {prgname, prefix, mp_flag, "-c", "1",
+                              "-b", "FF:09:0B.3"};
 
        int i;
 
@@ -354,17 +355,17 @@ test_invalid_vdev_flag(void)
 #endif
 
        /* Test with invalid vdev option */
-       const char *vdevinval[] = {prgname, prefix, no_huge, "-n", "1",
+       const char *vdevinval[] = {prgname, prefix, no_huge,
                                "-c", "1", vdev, "eth_dummy"};
 
        /* Test with valid vdev option */
-       const char *vdevval1[] = {prgname, prefix, no_huge, "-n", "1",
+       const char *vdevval1[] = {prgname, prefix, no_huge,
        "-c", "1", vdev, "net_ring0"};
 
-       const char *vdevval2[] = {prgname, prefix, no_huge, "-n", "1",
+       const char *vdevval2[] = {prgname, prefix, no_huge,
        "-c", "1", vdev, "net_ring0,args=test"};
 
-       const char *vdevval3[] = {prgname, prefix, no_huge, "-n", "1",
+       const char *vdevval3[] = {prgname, prefix, no_huge,
        "-c", "1", vdev, "net_ring0,nodeaction=r1:0:CREATE"};
 
        if (launch_proc(vdevinval) == 0) {
@@ -412,13 +413,13 @@ test_invalid_r_flag(void)
 #endif
 
        const char *rinval[][9] = {
-                       {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-r", "error"},
-                       {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-r", "0"},
-                       {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-r", "-1"},
-                       {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-r", "17"},
+                       {prgname, prefix, mp_flag, "-c", "1", "-r", "error"},
+                       {prgname, prefix, mp_flag, "-c", "1", "-r", "0"},
+                       {prgname, prefix, mp_flag, "-c", "1", "-r", "-1"},
+                       {prgname, prefix, mp_flag, "-c", "1", "-r", "17"},
        };
        /* Test with valid blacklist option */
-       const char *rval[] = {prgname, prefix, mp_flag, "-n", "1", "-c", "1", "-r", "16"};
+       const char *rval[] = {prgname, prefix, mp_flag, "-c", "1", "-r", "16"};
 
        int i;
 
@@ -456,74 +457,74 @@ test_missing_c_flag(void)
 #endif
 
        /* -c flag but no coremask value */
-       const char *argv1[] = { prgname, prefix, mp_flag, "-n", "3", "-c"};
+       const char *argv1[] = { prgname, prefix, mp_flag, "-c"};
        /* No -c, -l or --lcores flag at all */
-       const char *argv2[] = { prgname, prefix, mp_flag, "-n", "3"};
+       const char *argv2[] = { prgname, prefix, mp_flag};
        /* bad coremask value */
        const char *argv3[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-c", "error" };
+                               "-c", "error" };
        /* sanity check of tests - valid coremask value */
        const char *argv4[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-c", "1" };
+                               "-c", "1" };
        /* -l flag but no corelist value */
        const char *argv5[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l"};
+                               "-l"};
        const char *argv6[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l", " " };
+                               "-l", " " };
        /* bad corelist values */
        const char *argv7[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l", "error" };
+                               "-l", "error" };
        const char *argv8[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l", "1-" };
+                               "-l", "1-" };
        const char *argv9[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l", "1," };
+                               "-l", "1," };
        const char *argv10[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "-l", "1#2" };
+                                "-l", "1#2" };
        /* core number is negative value */
        const char * const argv11[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l", "-5" };
+                               "-l", "-5" };
        const char * const argv12[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l", "-5-7" };
+                               "-l", "-5-7" };
        /* core number is maximum value */
        const char * const argv13[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l", RTE_STR(RTE_MAX_LCORE) };
+                               "-l", RTE_STR(RTE_MAX_LCORE) };
        const char * const argv14[] = { prgname, prefix, mp_flag,
-                               "-n", "3", "-l", "1-"RTE_STR(RTE_MAX_LCORE) };
+                               "-l", "1-"RTE_STR(RTE_MAX_LCORE) };
        /* sanity check test - valid corelist value */
        const char * const argv15[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "-l", "1-2,3" };
+                                "-l", "1-2,3" };
 
        /* --lcores flag but no lcores value */
        const char * const argv16[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores" };
+                                "--lcores" };
        const char * const argv17[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", " " };
+                                "--lcores", " " };
        /* bad lcores value */
        const char * const argv18[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "1-3-5" };
+                                "--lcores", "1-3-5" };
        const char * const argv19[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "0-1,,2" };
+                                "--lcores", "0-1,,2" };
        const char * const argv20[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "0-,1" };
+                                "--lcores", "0-,1" };
        const char * const argv21[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "(0-,2-4)" };
+                                "--lcores", "(0-,2-4)" };
        const char * const argv22[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "(-1,2)" };
+                                "--lcores", "(-1,2)" };
        const char * const argv23[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "(2-4)@(2-4-6)" };
+                                "--lcores", "(2-4)@(2-4-6)" };
        const char * const argv24[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "(a,2)" };
+                                "--lcores", "(a,2)" };
        const char * const argv25[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "1-3@(1,3)" };
+                                "--lcores", "1-3@(1,3)" };
        const char * const argv26[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "3@((1,3)" };
+                                "--lcores", "3@((1,3)" };
        const char * const argv27[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "(4-7)=(1,3)" };
+                                "--lcores", "(4-7)=(1,3)" };
        const char * const argv28[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores", "[4-7]@(1,3)" };
+                                "--lcores", "[4-7]@(1,3)" };
        /* sanity check of tests - valid lcores value */
        const char * const argv29[] = { prgname, prefix, mp_flag,
-                                "-n", "3", "--lcores",
+                                "--lcores",
                                 "0-1,2@(5-7),(3-5)@(0,2),(0,6),7"};
 
        if (launch_proc(argv2) != 0) {
@@ -606,16 +607,22 @@ test_master_lcore_flag(void)
 #endif
 
        /* --master-lcore flag but no value */
-       const char *argv1[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore"};
+       const char *argv1[] = { prgname, prefix, mp_flag,
+                               "-c", "3", "--master-lcore"};
        /* --master-lcore flag with invalid value */
-       const char *argv2[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore", "-1"};
-       const char *argv3[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore", "X"};
+       const char *argv2[] = { prgname, prefix, mp_flag,
+                               "-c", "3", "--master-lcore", "-1"};
+       const char *argv3[] = { prgname, prefix, mp_flag,
+                               "-c", "3", "--master-lcore", "X"};
        /* master lcore not in coremask */
-       const char *argv4[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore", "2"};
+       const char *argv4[] = { prgname, prefix, mp_flag,
+                               "-c", "3", "--master-lcore", "2"};
        /* valid value */
-       const char *argv5[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore", "1"};
+       const char *argv5[] = { prgname, prefix, mp_flag,
+                               "-c", "3", "--master-lcore", "1"};
        /* valid value set before coremask */
-       const char *argv6[] = { prgname, prefix, mp_flag, "-n", "1", "--master-lcore", "1", "-c", "3"};
+       const char *argv6[] = { prgname, prefix, mp_flag,
+                               "--master-lcore", "1", "-c", "3"};
 
        if (launch_proc(argv1) == 0
                        || launch_proc(argv2) == 0
@@ -703,9 +710,9 @@ test_no_hpet_flag(void)
 #endif
 
        /* With --no-hpet */
-       const char *argv1[] = {prgname, prefix, mp_flag, no_hpet, "-c", "1", "-n", "2"};
+       const char *argv1[] = {prgname, prefix, mp_flag, no_hpet, "-c", "1"};
        /* Without --no-hpet */
-       const char *argv2[] = {prgname, prefix, mp_flag, "-c", "1", "-n", "2"};
+       const char *argv2[] = {prgname, prefix, mp_flag, "-c", "1"};
 
        if (launch_proc(argv1) != 0) {
                printf("Error - process did not run ok with --no-hpet flag\n");
@@ -734,16 +741,16 @@ test_no_huge_flag(void)
 #endif
 
        /* With --no-huge */
-       const char *argv1[] = {prgname, prefix, no_huge, "-c", "1", "-n", "2"};
+       const char *argv1[] = {prgname, prefix, no_huge, "-c", "1"};
        /* With --no-huge and -m */
-       const char *argv2[] = {prgname, prefix, no_huge, "-c", "1", "-n", "2",
+       const char *argv2[] = {prgname, prefix, no_huge, "-c", "1",
                        "-m", DEFAULT_MEM_SIZE};
 
        /* With --no-huge and --socket-mem */
-       const char *argv3[] = {prgname, prefix, no_huge, "-c", "1", "-n", "2",
+       const char *argv3[] = {prgname, prefix, no_huge, "-c", "1",
                        "--socket-mem=" DEFAULT_MEM_SIZE};
        /* With --no-huge, -m and --socket-mem */
-       const char *argv4[] = {prgname, prefix, no_huge, "-c", "1", "-n", "2",
+       const char *argv4[] = {prgname, prefix, no_huge, "-c", "1",
                        "-m", DEFAULT_MEM_SIZE, "--socket-mem=" DEFAULT_MEM_SIZE};
        if (launch_proc(argv1) != 0) {
                printf("Error - process did not run ok with --no-huge flag\n");
@@ -844,17 +851,17 @@ test_misc_flags(void)
        /* With invalid --syslog */
        const char *argv5[] = {prgname, prefix, mp_flag, "-c", "1", "--syslog", "error"};
        /* With no-sh-conf, also use no-huge to ensure this test runs on BSD */
-       const char *argv6[] = {prgname, "-c", "1", "-n", "2", "-m", DEFAULT_MEM_SIZE,
+       const char *argv6[] = {prgname, "-c", "1", "-m", DEFAULT_MEM_SIZE,
                        no_shconf, nosh_prefix, no_huge};
 
        /* With --huge-dir */
-       const char *argv7[] = {prgname, "-c", "1", "-n", "2", "-m", DEFAULT_MEM_SIZE,
+       const char *argv7[] = {prgname, "-c", "1", "-m", DEFAULT_MEM_SIZE,
                        "--file-prefix=hugedir", "--huge-dir", hugepath};
        /* With empty --huge-dir (should fail) */
-       const char *argv8[] = {prgname, "-c", "1", "-n", "2", "-m", DEFAULT_MEM_SIZE,
+       const char *argv8[] = {prgname, "-c", "1", "-m", DEFAULT_MEM_SIZE,
                        "--file-prefix=hugedir", "--huge-dir"};
        /* With invalid --huge-dir */
-       const char *argv9[] = {prgname, "-c", "1", "-n", "2", "-m", DEFAULT_MEM_SIZE,
+       const char *argv9[] = {prgname, "-c", "1", "-m", DEFAULT_MEM_SIZE,
                        "--file-prefix=hugedir", "--huge-dir", "invalid"};
        /* Secondary process with invalid --huge-dir (should run as flag has no
         * effect on secondary processes) */
@@ -862,23 +869,23 @@ test_misc_flags(void)
 
        /* try running with base-virtaddr param */
        const char *argv11[] = {prgname, "--file-prefix=virtaddr",
-                       "-c", "1", "-n", "2", "--base-virtaddr=0x12345678"};
+                       "-c", "1", "--base-virtaddr=0x12345678"};
 
        /* try running with --vfio-intr INTx flag */
        const char *argv12[] = {prgname, "--file-prefix=intr",
-                       "-c", "1", "-n", "2", "--vfio-intr=legacy"};
+                       "-c", "1", "--vfio-intr=legacy"};
 
        /* try running with --vfio-intr MSI flag */
        const char *argv13[] = {prgname, "--file-prefix=intr",
-                       "-c", "1", "-n", "2", "--vfio-intr=msi"};
+                       "-c", "1", "--vfio-intr=msi"};
 
        /* try running with --vfio-intr MSI-X flag */
        const char *argv14[] = {prgname, "--file-prefix=intr",
-                       "-c", "1", "-n", "2", "--vfio-intr=msix"};
+                       "-c", "1", "--vfio-intr=msix"};
 
        /* try running with --vfio-intr invalid flag */
        const char *argv15[] = {prgname, "--file-prefix=intr",
-                       "-c", "1", "-n", "2", "--vfio-intr=invalid"};
+                       "-c", "1", "--vfio-intr=invalid"};
 
        /* run all tests also applicable to FreeBSD first */
 
@@ -989,25 +996,25 @@ test_file_prefix(void)
 #endif
 
        /* this should fail unless the test itself is run with "memtest" prefix */
-       const char *argv0[] = {prgname, mp_flag, "-c", "1", "-n", "2", "-m", DEFAULT_MEM_SIZE,
-                       "--file-prefix=" memtest };
+       const char *argv0[] = {prgname, mp_flag, "-c", "1", "-m",
+                       DEFAULT_MEM_SIZE, "--file-prefix=" memtest };
 
        /* primary process with memtest1 and default mem mode */
-       const char *argv1[] = {prgname, "-c", "1", "-n", "2", "-m",
+       const char *argv1[] = {prgname, "-c", "1", "-m",
                        DEFAULT_MEM_SIZE, "--file-prefix=" memtest1 };
 
        /* primary process with memtest1 and legacy mem mode */
-       const char *argv2[] = {prgname, "-c", "1", "-n", "2", "-m",
+       const char *argv2[] = {prgname, "-c", "1", "-m",
                        DEFAULT_MEM_SIZE, "--file-prefix=" memtest1,
                        "--legacy-mem" };
 
        /* primary process with memtest2 and legacy mem mode */
-       const char *argv3[] = {prgname, "-c", "1", "-n", "2", "-m",
+       const char *argv3[] = {prgname, "-c", "1", "-m",
                        DEFAULT_MEM_SIZE, "--file-prefix=" memtest2,
                        "--legacy-mem" };
 
        /* primary process with memtest2 and default mem mode */
-       const char *argv4[] = {prgname, "-c", "1", "-n", "2", "-m",
+       const char *argv4[] = {prgname, "-c", "1", "-m",
                        DEFAULT_MEM_SIZE, "--file-prefix=" memtest2 };
 
        /* check if files for current prefix are present */
@@ -1153,38 +1160,38 @@ test_memory_flags(void)
 
        /* valid -m flag and mp flag */
        const char *argv0[] = {prgname, prefix, mp_flag, "-c", "10",
-                       "-n", "2", "-m", DEFAULT_MEM_SIZE};
+                       "-m", DEFAULT_MEM_SIZE};
 
        /* valid -m flag */
-       const char *argv1[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv1[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, "-m", DEFAULT_MEM_SIZE};
 
        /* valid (zero) --socket-mem flag */
-       const char *argv2[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv2[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, "--socket-mem=0,0,0,0"};
 
        /* invalid (incomplete) --socket-mem flag */
-       const char *argv3[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv3[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, "--socket-mem=2,2,"};
 
        /* invalid (mixed with invalid data) --socket-mem flag */
-       const char *argv4[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv4[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, "--socket-mem=2,2,Fred"};
 
        /* invalid (with numeric value as last character) --socket-mem flag */
-       const char *argv5[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv5[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, "--socket-mem=2,2,Fred0"};
 
        /* invalid (with empty socket) --socket-mem flag */
-       const char *argv6[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv6[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, "--socket-mem=2,,2"};
 
        /* invalid (null) --socket-mem flag */
-       const char *argv7[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv7[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, "--socket-mem="};
 
        /* valid --socket-mem specified together with -m flag */
-       const char *argv8[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv8[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, "-m", DEFAULT_MEM_SIZE, "--socket-mem=2,2"};
 
        /* construct an invalid socket mask with 2 megs on each socket plus
@@ -1236,11 +1243,11 @@ test_memory_flags(void)
        }
 
        /* invalid --socket-mem flag (with extra socket) */
-       const char *argv9[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv9[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, invalid_socket_mem};
 
        /* valid --socket-mem flag */
-       const char *argv10[] = {prgname, "-c", "10", "-n", "2",
+       const char *argv10[] = {prgname, "-c", "10",
                        "--file-prefix=" memtest, valid_socket_mem};
 
        if (launch_proc(argv0) != 0) {