Displaying 4 results from an estimated 4 matches for "bgwriter".
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bcwriter
2014 Mar 23
0
for Chris Mason ( iowatcher graphs)
...0 -d
/dev/disk/vbd/21-920 -o - > test.trace
/dev/disk/vbd/21-920 is the software raid contains 2 lv volumes , each
lv volume created in big srp attached disk
Inside vm i try to do some work via fio:
[global]
rw=randread
size=128m
directory=/tmp
ioengine=libaio
iodepth=4
invalidate=1
direct=1
[bgwriter]
rw=randwrite
iodepth=32
[queryA]
iodepth=1
ioengine=mmap
direct=0
thinktime=3
[queryB]
iodepth=1
ioengine=mmap
direct=0
thinktime=5
[bgupdater]
rw=randrw
iodepth=16
thinktime=40
size=128m
After that i try to get graph like iowatcher -t test.trace -o trace.svg
But svg contains unreadable images...
2012 Mar 25
3
attempt to access beyond end of device and livelock
...=4096000
...
--- [2]
modprobe brd rd_size=2048000 (or boot with ramdisk_size=2048000)
mkfs.btrfs -m raid0 /dev/ram0 /dev/ram1
mount /dev/ram0 /mnt -o discard
fio testcase
umount /mnt
--- [3] testcase
[global]
directory=/mnt
rw=randread
size=256m
ioengine=libaio
iodepth=4
invalidate=1
direct=1
[bgwriter]
rw=randwrite
iodepth=32
[queryA]
iodepth=1
ioengine=mmap
thinktime=3
[queryB]
iodepth=1
ioengine=mmap
thinktime=1
[bgupdater]
rw=randrw
iodepth=16
thinktime=1
size=32m
--
Daniel J Blueman
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the body of a messa...
2015 Sep 03
2
Fuzzing complex programs
On Thu, Sep 3, 2015 at 6:45 PM, Kostya Serebryany <kcc at google.com> wrote:
> Did you build the Postgres code with -fsanitize-coverage=... ?
Yes:
CC = clang
CFLAGS = -Wall -Wmissing-prototypes -Wpointer-arith
-Wdeclaration-after-statement -Wendif-labels
-Wmissing-format-attribute -Wformat-security -fno-strict-aliasing
-fwrapv -Wno-unused-command-line-argument -g -O0 -fsanitize=address
2015 Sep 03
2
Fuzzing complex programs
...til/plancat.o
> optimizer/util/predtest.o optimizer/util/relnode.o
> optimizer/util/restrictinfo.o optimizer/util/tlist.o
> optimizer/util/var.o port/atomics.o port/dynloader.o port/pg_sema.o
> port/pg_shmem.o port/pg_latch.o postmaster/autovacuum.o
> postmaster/bgworker.o postmaster/bgwriter.o postmaster/checkpointer.o
> postmaster/fork_process.o postmaster/pgarch.o postmaster/pgstat.o
> postmaster/postmaster.o postmaster/startup.o postmaster/syslogger.o
> postmaster/walwriter.o regex/regcomp.o regex/regerror.o
> regex/regexec.o regex/regfree.o regex/regprefix.o regex/regex...