search for: 328k

...metal over file > # C: virtio-blk over block > # D: virtio-blk over file > # E: vhost-blk bio over block > # F: vhost-blk kiocb over block > # G: vhost-blk kiocb over file > # > # A B C D E F G > > 1 171k 151k 148k 151k 195k 187k 175k > 2 328k 302k 249k 241k 349k 334k 296k > 3 479k 437k 179k 174k 501k 464k 404k > 4 622k 568k 143k 183k 620k 580k 492k > 5 755k 697k 136k 128k 737k 693k 579k > 6 887k 808k 131k 120k 830k 782k 640k > 7 1004k 926k 126k 131k 926k 863k 693k > 8 1099k 1015k 117k 115k...

Hi All I was reading through this: http://kashyapc.com/2011/12/02/little-more-disk-io-perf-improvement-with-fallocateing-a-qcow2-disk/ I was basically searching for pointers on improving disk I/O. I wanted to know the purpose of preallocation=full & preallocation=metadata , What is the difference between them ? and which one would yield a better disk I/O speed ? Appreciate your

...e metal over file > # C: virtio-blk over block > # D: virtio-blk over file > # E: vhost-blk bio over block > # F: vhost-blk kiocb over block > # G: vhost-blk kiocb over file > # > # A B C D E F G > > 1 171k 151k 148k 151k 195k 187k 175k > 2 328k 302k 249k 241k 349k 334k 296k > 3 479k 437k 179k 174k 501k 464k 404k > 4 622k 568k 143k 183k 620k 580k 492k > 5 755k 697k 136k 128k 737k 693k 579k > 6 887k 808k 131k 120k 830k 782k 640k > 7 1004k 926k 126k 131k 926k 863k 693k > 8 1099k 1015k 117k 115k...

...e metal over file > # C: virtio-blk over block > # D: virtio-blk over file > # E: vhost-blk bio over block > # F: vhost-blk kiocb over block > # G: vhost-blk kiocb over file > # > # A B C D E F G > > 1 171k 151k 148k 151k 195k 187k 175k > 2 328k 302k 249k 241k 349k 334k 296k > 3 479k 437k 179k 174k 501k 464k 404k > 4 622k 568k 143k 183k 620k 580k 492k > 5 755k 697k 136k 128k 737k 693k 579k > 6 887k 808k 131k 120k 830k 782k 640k > 7 1004k 926k 126k 131k 926k 863k 693k > 8 1099k 1015k 117k 115k...

...rmance result of networking. - Having more threads is not necessarily a win, at least we need a module parameter to other stuffs to control the number of threads I believe. Thanks > > # num-queues > # bare metal > # virtio-blk > # vhost-blk > > 1 171k 148k 195k > 2 328k 249k 349k > 3 479k 179k 501k > 4 622k 143k 620k > 5 755k 136k 737k > 6 887k 131k 830k > 7 1004k 126k 926k > 8 1099k 117k 1001k > 9 1194k 115k 1055k > 10 1278k 109k 1130k > 11 1345k 110k 1119k > 12 1411k 104k 1201k > 13 1466k 106k 1260k > 14 1517k 103k...

...nd it's still a sparse image. $ qemu-img create -f qcow2 -o preallocation=metadata test1-metadata.qcow2 1G Formatting 'test1-metadata.qcow2', fmt=qcow2 size=1073741824 encryption=off cluster_size=65536 preallocation='metadata' lazy_refcounts=off refcount_bits=16 328K -rw-r--r--. 1 root root 1.1G Jun 3 03:20 copy-test1-metadata.qcow2 (2) 'preallocation=full': allocates zeroes and makes a non-sparse image. $ qemu-img create -f qcow2 -o preallocation=full test2-full.qcow2 1G Formatting 'test2-full.qcow2', fmt=qcow2 size=1073741824 encryp...

...0 0| 0 0 | 196B 178B| 0 0 | 32 24 0 0 100 0 0 0| 0 0 | 66B 178B| 0 0 | 9 12 0 0 100 0 0 0| 0 0 | 66B 178B| 0 0 | 10 13 0 0 80 19 0 0|8192B 1248k| 66B 178B| 0 0 | 177 205 0 0 54 46 0 0| 16k 328k| 198B 486B| 0 0 | 99 111 0 0 53 47 0 0| 0 344k| 126B 178B| 0 0 | 82 78 0 0 31 69 0 0| 0 312k| 66B 178B| 0 0 | 79 101 0 0 60 40 0 0| 0 240k| 192B 372B| 0 0 | 76 89 0 0 24 76 0 0| 0 280k| 66B 178B|...

...0 0| 0 0 | 196B 178B| 0 0 | 32 24 0 0 100 0 0 0| 0 0 | 66B 178B| 0 0 | 9 12 0 0 100 0 0 0| 0 0 | 66B 178B| 0 0 | 10 13 0 0 80 19 0 0|8192B 1248k| 66B 178B| 0 0 | 177 205 0 0 54 46 0 0| 16k 328k| 198B 486B| 0 0 | 99 111 0 0 53 47 0 0| 0 344k| 126B 178B| 0 0 | 82 78 0 0 31 69 0 0| 0 312k| 66B 178B| 0 0 | 79 101 0 0 60 40 0 0| 0 240k| 192B 372B| 0 0 | 76 89 0 0 24 76 0 0| 0 280k| 66B 178B|...

...---- 1 squid squid 0 Jul 8 10:45 cache.log.0 -rw-r----- 1 squid squid 2.2M Jul 8 10:45 access.log.1.gz -rw-r----- 1 squid squid 11K Jul 8 10:45 access.log.0 -rw-r----- 1 squid squid 1.4M Jul 8 10:45 store.log.1.gz -rw-r----- 1 squid squid 1.9K Jul 8 10:45 cache.log -rw-r----- 1 squid squid 328K Jul 8 10:46 store.log -rw-r----- 1 squid squid 957K Jul 8 10:46 access.log I don't understand why compress old log files but doesn't delete old non-compressed files uncompressed. Any ideas? (I've also modified create parameter for squid be owner of access logs and run by hand logrota...

...ble entries: 16384 (order: 6, 262144 bytes) TCP bind hash table entries: 16384 (order: 6, 262144 bytes) TCP: Hash tables configured (established 16384 bind 16384) TCP reno registered NET: Registered protocol family 1 XENBUS: Timeout connecting to devices! Write protecting the kernel read-only data: 328k Starting udevd Creating devices Loading xennet netfront: Initialising virtual ethernet driver. Loading xenblk Registering block device major 3 Loading reiserfs Waiting for device /dev/hda6 to appear: ..............................not found -- exiting to /bin/sh ------------------------------------...

...0.01% lat (usec): 500=0.06%, 750=0.49%, 1000=4.28% lat (msec): 2=59.46%, 4=28.76%, 10=6.62%, 20=0.30%, 50=0.02% lat (msec): 500=0.01%, 2000=0.01% randrw: (groupid=0, jobs=1): err= 0: pid=5426 read : io=2,042MB, bw=21,241KB/s, iops=5,310, runt= 98463msec slat (usec): min=12, max=328K, avg=181.08, stdev=512.92 clat (usec): min=2, max=329K, avg=2194.43, stdev=2135.67 bw (KB/s) : min= 0, max=41096, per=1.01%, avg=3321.97, stdev=8418.27 write: io=6,126MB, bw=63,704KB/s, iops=15,926, runt= 98463msec slat (usec): min=12, max=328K, avg=181.45, stdev=511.49 clat (u...

...0.01% lat (usec): 500=0.06%, 750=0.49%, 1000=4.28% lat (msec): 2=59.46%, 4=28.76%, 10=6.62%, 20=0.30%, 50=0.02% lat (msec): 500=0.01%, 2000=0.01% randrw: (groupid=0, jobs=1): err= 0: pid=5426 read : io=2,042MB, bw=21,241KB/s, iops=5,310, runt= 98463msec slat (usec): min=12, max=328K, avg=181.08, stdev=512.92 clat (usec): min=2, max=329K, avg=2194.43, stdev=2135.67 bw (KB/s) : min= 0, max=41096, per=1.01%, avg=3321.97, stdev=8418.27 write: io=6,126MB, bw=63,704KB/s, iops=15,926, runt= 98463msec slat (usec): min=12, max=328K, avg=181.45, stdev=511.49 clat (u...

...es/LLVMSystemZAsmPrinter.dir 352K build/lib/Target/BPF/InstPrinter 348K build/tools/clang/test/Modules/Output/explicit-build.cpp.tmp 344K build/lib/Target/BPF/InstPrinter/CMakeFiles 340K build/lib/Target/BPF/InstPrinter/CMakeFiles/LLVMBPFAsmPrinter.dir 340K build/examples 332K build/tools/lld/tools 328K build/tools/lld/tools/lld 328K build/tools/clang/test/Modules/Output/target-platform-features.m.tmp 328K build/tools/clang/test/CXX/temp/temp.decls 328K build/lib/Target/Lanai/TargetInfo 320K build/tools/lld/tools/lld/CMakeFiles 320K build/tools/clang/test/Modules/Output/odr_hash-Friend.cpp.tmp 320...

I''m attempting to setup Squid as shown on: http://shorewall.sourceforge.net/Shorewall_Squid_Usage.html#DMZ The firewall is a Bering 1.0 firewall running Shorewall 1.3.11, Red Hat 7.2 on the server in the DMZ. I''m not seeing the requests come in to the server using tcpdump. The server is 192.168.2.1 connecting to eth2 on the firewall, the local traffic I''m trying to