ShareHashFile是一个轻巧的,可嵌入的NOSQL键值存储 /哈希表,具有稳定的键提示,零副本IPC队列以及用C为Linux编写的多重IPC Logging库。直接在共享内存中访问的数据;共享Hashfile和应用程序计划之间没有使用插座;没有服务器过程。 C&C ++的API。
默认情况下,数据将保存在共享内存中,使所有数据都可以访问任何进程。多达40亿键可以存储在单个共享Hashfile Hash表中,该键只能通过可用的RAM限制。
例如,假设您有一个带有128GB RAM的盒子,SharedHashfile哈希表使用了96GB。该盒子有24个内核,并且共有24个过程(例如Nginx分叉的从工艺或其他方法)同时访问96GB的哈希表。每个过程共享与共享内存完全相同的96GB。
由于一个键,值对在跨n个进程的共享内存中保存,因此共享内存可以随时更改和/或移动。因此,获得一个值总是会导致接收值的本地副本。
键和值当前是二进制字符串,最大长度为2^32字节。
传统的malloc()在共享内存中不起作用,因为我们必须使用偏移而不是传统的指针。因此,ShareHashfile使用其自己的Malloc()实现来共享内存。
为了避免记忆孔,然后在钥匙,值插入时会不时发生垃圾收集。在垃圾收集过程中,垃圾收集过程中产生的值对的数量被算法故意限制为最多8,192对,无论在哈希表中插入了多少键。这意味着哈希表总是感觉非常响应。
ShareHashFile旨在优雅地扩展,随着更多关键,值对插入。没有突然的记忆增加或记忆加倍事件。而且由于重新汇总钥匙而没有大大的停顿。
为了减少争论,设计没有单个全局哈希表锁定。取而代之的是,钥匙在256个锁上分碎,以减少锁定争论。
对于具有高水平写作的用例,因此由于删除钥匙删除的记忆孔时,由于回收 /收缩的内存映射区域而导致的系统MMAP()调用过多,因此性能可能会受到影响。
为了提高写重用案例的性能,可以在整个哈希表中固定键和值,这意味着可以轻松地重复使用删除的键而无需创建内存孔,并且无需昂贵的系统MMAP()调用。
使用固定长度键和值还减少了使用的RAM量,因为键和值不再存储,例如1亿键和值将节省1亿 * 8字节= 8亿字节。
哈希表存储在/dev/shm中的内存映射文件中,这意味着即使没有进程使用哈希表,数据仍然存在。但是,哈希表将无法生存在重新启动时。
与其他哈希表不同,存储在sharedhashfile中的每个密钥都会分配自己的UID,例如shf_make_hash("key", 3); uint32_t uid = shf_put_key_val(shf, "val", 3) 。要在将来获取相同的密钥,请选择通过其密钥访问键,或通过其UID访问键,例如shf_make_hash("key", 3); shf_get_key_val_copy(shf)或shf_get_uid_val_copy(shf, uid) 。
UID有用什么? UID不会占用任何额外的资源,可以将其视为“免费”资源。访问钥匙的UID比通过其键访问键要快。由于UID的大小仅为32bit,因此可以轻松地存储作为对程序中的键的引用,或嵌入到键,值对的值中,甚至嵌入其他键中。
示例用法:如果UID1指向密钥"user-id-<xyz>" ,并且UID2指向键"facebook.com" ,则另一个'mash Up'键可能为"<uid1><uid2>" 。是否想找出"user-id-<xyz>"是否在其个人URL白名单中具有"facebook.com"吗?只需查看是否存在键"<uid1><uid2>" 。
“稳定钥匙提示”中的“稳定”是什么意思?这意味着即使键和/或值字节在内存中移动,UID也保持不变。
它如何工作?创建X固定尺寸的队列元素,然后将这些队列元素推向/从。
示例:想象两个过程Process A & Process B 。 Process A创建100,000个队列元素和3个队列; queue-free , queue-a2b和queue-b2a 。从直觉上讲,所有队列元素都被推到queue-free上。 Process A然后产生附加到ShareHashfile的Process B ,以便从queue-a2b中拉出。要执行零拷贝IPC,然后Process A可以从无queue-free下将队列元素拉到固定尺寸,共享内存队列元素,然后将队列元素推入queue-a2b 。 Process B相反;从queue-a2b中拉出队列元素,操纵固定大小,共享内存队列队列元素,并将队列元素推入queue-b2a 。 Process A还可以从queue-b2a中拉出队列项目,以消化Process B结果。
那么,每秒可以通过Processes A和Process B来回移动多少个队列元素?在联想W530笔记本电脑上,如果两个Process A和Process B都在C中写成。
注意:当队列元素从一个队列移动到另一个队列时,然后不复制它,只会更新引用。
它如何工作? Process A调用shf_log_thread_new(),该shf_log_thread_new()创建共享内存日志缓冲区和日志输出线程,该线程会定期监视新的日志线。 Process B调用SHF_LOG_ATTACH_EXISTING()开始登录相同的共享日志。使用C宏SHF_PLAIN()和SHF_DEBUG()登录。如果尚未调用SHF_LOG_THREAD_NEW(),则输出会自动进入Stdout,否则日志记录由日志输出线程多路复用。
示例输出:
sharedhashfile$ cat debug/test.q.shf.t.tout
1..10
=0.000000 23056 pid 23056 started; mode is 'c2c'
=0.000013 23056 - SHF_SNPRINTF() // 'test-23056-ipc-queue'
ok 1 - c2*: shf_attach() works for non-existing file as expected
=0.000002 23060 shf.monitor: monitoring pid 23056 to delete /dev/shm/test-23056-ipc-queue.shf
1..7
=0.000001 23064 pid 23064 started; mode is '4c'
=0.000010 23064 - SHF_SNPRINTF() // 'test-23064-ipc-queue'
ok 1 - 4c: shf_attach_existing() works for existing file as expected
#0.003948 1 --> auto mapped to thread id 23061
#0.003948 1 shf_log_thread(shf=?){}
ok 2 - c2*: put lock in value as expected
ok 3 - c2*: shf_q_new() returned as expected
ok 4 - c2*: moved expected number of new queue items // estimate 51,044,225 q items per second without contention
#0.131327 2 --> auto mapped to thread id 23064
#0.131327 2 '4c' mode; behaving as client
ok 2 - 4c: shf_q_get_name('qid-free') returned qid as expected
ok 3 - 4c: shf_q_get_name('qid-a2b' ) returned qid as expected
ok 4 - 4c: shf_q_get_name('qid-b2a' ) returned qid as expected
#0.158467 2 shf_race_start() // 2 horses started after 0.000001 seconds
#0.158474 2 testing process b IPC queue a2b --> b2a speed
#0.158467 3 --> auto mapped to thread id 23056
#0.158467 3 shf_race_start() // 2 horses started after 0.027820 seconds
#0.158484 3 testing process a IPC queue b2a --> a2b speed
ok 5 - 4c: moved expected number of new queue items // estimate 53,106,512 q items per second with contention
#0.179207 2 testing process b IPC lock speed
ok 6 - 4c: got lock value address as expected
ok 5 - c2*: moved expected number of new queue items // estimate 52,951,698 q items per second with contention
#0.180467 3 testing process a IPC lock speed
ok 6 - c2*: got lock value address as expected
#0.180475 3 shf_race_start() // 2 horses started after 0.000000 seconds
#0.180475 2 shf_race_start() // 2 horses started after 0.001165 seconds
ok 7 - c2*: rw lock expected number of times // estimate 4,422,109 locks per second; with contention
ok 7 - 4c: rw lock expected number of times // estimate 4,411,319 locks per second; with contention
#0.633875 2 ending child
ok 8 - c2*: rw lock expected number of times // estimate 51,144,435 locks per second; without contention
ok 9 - c2*: rw lock expected number of times // estimate 381,821,029 locks per second; without lock, just loop
ok 10 - c2*: test still alive
#0.677166 3 ending parent
#0.677177 3 shf_del(shf=?)
#0.677180 3 - SHF_SNPRINTF() // 'du -h -d 0 /dev/shm/test-23056-ipc-queue.shf ; rm -rf /dev/shm/test-23056-ipc-queue.shf/'
#0.677181 3 shf_detach(shf=?)
#0.677183 3 shf_log_thread_del(shf=?) // waiting for log thread to end
=0.686385 3 shf_backticks('du -h -d 0 /dev/shm/test-23056-ipc-queue.shf ; rm -rf /dev/shm/test-23056-ipc-queue.shf/')
=0.724220 3 - read 39 bytes from the pipe
test: shf size before deletion: 394M /dev/shm/test-23056-ipc-queue.shf
笔记:
使用make构建发布代码,并使用make debug构建发行代码。测试自动运行。
root@16vcpu:/# make clean ; make
rm -rf release debug
make: variable: PROD_SRCS=murmurhash3.c shf.c tap.c
make: variable: PROD_OBJS=release/murmurhash3.o release/shf.o release/tap.o
make: variable: TEST_SRCS=test.1.tap.c test.9.shf.c
make: variable: TEST_OBJS=release/test.1.tap.o release/test.9.shf.o
make: variable: TEST_EXES=release/test.1.tap.t release/test.9.shf.t
make: compling: release/test.1.tap.o
make: compling: release/murmurhash3.o
make: compling: release/shf.o
make: compling: release/tap.o
make: linking: release/test.1.tap.t
make: running: release/test.1.tap.t
1..1
ok 1 - All passed
make: compling: release/test.9.shf.o
make: linking: release/test.9.shf.t
make: running: release/test.9.shf.t
1..10
ok 1 - shf_attach_existing() fails for non-existing file as expected
ok 2 - shf_attach() works for non-existing file as expected
ok 3 - shf_get_copy_via_key() could not find unput key as expected
ok 4 - shf_get_copy_via_key() could find put key as expected
ok 5 - put expected number of keys // 2293581 keys per second
ok 6 - got expected number of non-existing keys // 3812667 keys per second
ok 7 - got expected number of existing keys // 3021523 keys per second
ok 8 - graceful growth cleans up after itself as expected
ok 9 - del expected number of existing keys // 3109056 keys per second
ok 10 - del does not clean up after itself as expected
running tests on: via command: 'cat /proc/cpuinfo | egrep 'model name' | head -n 1'
running tests on: `model name : Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz`
-OP MMAP REMAP SHRK PART TOTAL ------PERCENT OPERATIONS PER PROCESS PER SECOND -OPS
--- -k/s --k/s --/s --/s M-OPS 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 -M/s
PUT 3.4 16.9 1298 626 0.0 10 10 8 5 3 2 8 9 9 6 2 8 4 7 8 4 0.0
PUT 51.4 363.7 1410 1200 5.4 7 6 7 6 7 5 6 7 6 6 6 7 7 6 5 6 5.4 -------
PUT 65.2 336.9 2036 2036 10.1 7 5 7 6 7 6 7 7 6 6 6 7 7 6 5 6 4.6 ------
PUT 56.8 331.7 1888 1888 14.9 6 5 6 7 6 7 7 7 6 6 6 7 7 6 5 6 4.9 ------
PUT 73.8 286.8 2200 2200 18.8 7 5 5 7 7 7 7 7 6 7 6 6 6 5 5 7 3.9 -----
PUT 21.2 412.9 726 726 25.1 6 5 5 7 7 8 7 7 6 6 6 6 6 5 5 7 6.3 --------
PUT 77.9 312.0 2554 2557 29.3 6 6 6 6 6 7 6 6 6 6 6 7 6 6 6 7 4.2 -----
PUT 96.7 272.2 3044 3041 32.5 7 6 6 6 6 7 6 6 6 7 6 7 6 6 6 7 3.1 ----
PUT 63.3 303.3 1804 1804 36.6 7 6 6 5 5 7 6 7 5 6 5 7 7 6 6 7 4.2 -----
PUT 11.5 380.9 349 349 43.2 7 6 6 5 5 7 6 6 6 5 6 7 7 6 6 6 6.6 --------
PUT 26.3 444.5 895 898 49.1 7 6 6 5 5 7 6 7 6 6 6 7 7 6 6 7 5.9 -------
PUT 55.0 283.9 1862 1860 53.8 5 6 6 6 6 6 5 7 6 6 7 7 7 6 6 7 4.7 ------
PUT 75.0 312.1 2480 2480 57.4 7 7 6 5 6 5 7 7 6 6 7 7 6 7 5 6 3.6 ----
PUT 88.5 191.2 2859 2858 60.6 7 7 6 6 7 6 7 5 7 5 7 7 6 7 6 5 3.2 ----
PUT 90.6 244.9 2853 2854 63.5 7 7 5 7 7 5 7 5 7 5 7 7 6 7 7 5 2.9 ---
PUT 82.6 258.8 2455 2455 66.4 7 7 5 7 7 6 7 5 6 5 7 7 5 7 6 5 3.0 ---
PUT 69.7 185.9 1970 1970 70.3 7 7 6 5 7 6 7 6 5 5 7 7 6 7 7 5 3.9 -----
PUT 28.8 409.6 761 760 75.6 6 7 6 6 6 5 6 6 7 5 7 7 5 7 7 6 5.2 ------
PUT 7.2 490.9 230 230 82.0 6 8 5 6 6 5 5 6 5 5 7 8 6 8 7 6 6.4 --------
PUT 11.1 414.9 391 391 88.4 6 7 7 6 6 5 5 6 6 5 6 7 5 7 7 6 6.4 --------
PUT 22.3 323.4 810 810 94.5 7 8 8 7 6 6 5 7 6 5 7 2 6 8 7 7 6.1 --------
PUT 26.1 302.4 1124 1124 99.3 2 5 8 9 7 8 10 1 9 9 6 0 8 4 9 6 4.8 ------
PUT 1.6 6.8 239 239 100.0 0 0 0 0 0 0 0 0 14 58 0 0 5 0 23 0 0.7
MIX 0.0 0.0 0 0 100.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0
MIX 21.8 103.9 0 0 105.3 5 6 6 7 7 7 7 5 8 6 6 3 7 6 7 7 5.3 -------
MIX 0.5 8.2 0 0 114.0 6 6 5 6 7 5 6 7 7 6 7 6 7 7 6 6 8.7 -----------
MIX 0.0 8.5 0 0 122.8 6 6 5 6 7 5 6 7 7 6 7 6 7 7 6 6 8.7 -----------
MIX 0.0 9.6 0 0 131.7 6 6 6 6 7 6 6 7 6 6 7 6 7 7 6 6 8.9 -----------
MIX 0.0 11.1 0 0 140.8 6 6 7 6 7 6 5 7 6 6 7 5 7 7 5 6 9.1 ------------
MIX 0.0 12.0 0 0 149.6 6 6 7 7 6 6 6 6 7 6 6 6 6 6 6 7 8.8 -----------
MIX 0.0 12.7 0 0 158.3 7 6 6 7 6 6 7 6 7 6 6 6 6 6 7 7 8.7 -----------
MIX 0.0 14.0 0 0 167.1 7 6 6 7 6 6 7 6 7 6 6 6 6 6 7 7 8.8 -----------
MIX 0.0 14.7 0 0 176.2 7 6 6 5 6 6 7 6 7 6 6 5 6 6 7 7 9.1 ------------
MIX 0.0 16.3 0 0 185.1 6 7 7 7 7 7 6 6 6 5 6 7 6 5 6 6 8.9 -----------
MIX 0.0 17.0 0 0 194.3 6 7 7 7 7 6 6 6 6 5 6 7 6 5 6 6 9.2 ------------
MIX 0.0 7.1 0 0 200.0 9 9 7 2 3 10 9 5 0 11 4 14 3 7 6 1 5.7 -------
GET 0.0 0.0 0 0 200.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0
GET 0.0 2.1 0 0 200.3 3 6 7 6 7 6 6 6 7 7 7 3 7 7 7 7 0.3
GET 0.0 2.4 0 0 208.5 6 6 6 6 7 6 6 6 7 6 7 6 6 7 6 7 8.2 ----------
GET 0.0 0.0 0 0 217.4 6 7 7 6 7 5 6 6 7 6 7 6 6 7 6 6 8.9 -----------
GET 0.0 0.0 0 0 226.3 6 7 8 6 7 5 6 6 7 5 7 5 6 7 6 5 9.0 -----------
GET 0.0 0.0 0 0 235.3 6 7 7 6 8 5 6 6 8 5 7 5 5 7 6 6 9.0 -----------
GET 0.0 0.0 0 0 244.2 6 7 6 8 7 5 6 6 7 6 7 6 6 5 6 6 8.9 -----------
GET 0.0 0.0 0 0 253.5 5 8 5 8 6 6 7 8 7 5 8 5 5 5 7 5 9.3 ------------
GET 0.0 0.0 0 0 263.1 4 8 5 9 5 5 8 9 5 5 8 5 5 5 8 5 9.6 ------------
GET 0.0 0.0 0 0 272.9 4 8 5 7 5 7 8 9 5 5 8 5 5 5 8 5 9.8 -------------
GET 0.0 0.0 0 0 282.3 5 7 5 6 8 7 7 8 5 5 7 5 5 6 7 5 9.4 ------------
GET 0.0 0.0 0 0 291.0 6 2 6 6 9 10 8 4 6 6 2 6 6 6 8 6 8.7 -----------
GET 0.0 0.0 0 0 298.7 12 0 10 3 0 9 0 0 4 12 0 12 13 9 0 15 7.7 ----------
GET 0.0 0.0 0 0 300.0 32 0 0 0 0 0 0 0 0 23 0 27 18 0 0 0 1.3 -
* MIX is 2% (2000000) del/put, 98% (12100654) get
make: built and tested release version
笔记:
这是8个核心Lenovo W530笔记本电脑上的一个示例,显示了带有1亿键的哈希桌,然后进行2%的删除/插入物,98%的读数为每秒超过1000万次的操作率:
$ make clean ; make release
$ PATH=release:$PATH SHF_PERFORMANCE_TEST_ENABLE=1 test.f.shf.t
...
perf testing: SharedHashFile
running tests on: via command: 'cat /proc/cpuinfo | egrep 'model name' | head -n 1'
running tests on: `model name : Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz`
-OP MMAP REMAP SHRK PART TOTAL ------PERCENT OPERATIONS PER PROCESS PER SECOND -OPS
--- -k/s --k/s --/s --/s M-OPS 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 -M/s
PUT 0.2 0.0 0 0 0.0 32 30 0 0 0 0 0 38 0 0 0 0 0 0 0 0 0.0
PUT 30.0 89.4 1767 1767 4.5 13 13 13 12 13 12 12 13 0 0 0 0 0 0 0 0 4.5 -----
PUT 30.6 70.8 1925 1925 8.6 13 12 13 13 13 12 13 12 0 0 0 0 0 0 0 0 4.1 -----
PUT 17.1 103.3 1090 1090 13.7 12 12 13 13 13 12 13 13 0 0 0 0 0 0 0 0 5.1 ------
PUT 37.2 47.6 2334 2334 16.4 13 12 13 13 13 12 12 13 0 0 0 0 0 0 0 0 2.6 ---
PUT 15.7 88.1 944 944 21.4 13 12 13 12 12 12 13 12 0 0 0 0 0 0 0 0 5.0 ------
PUT 15.6 105.9 1035 1035 26.1 13 12 13 12 13 12 13 13 0 0 0 0 0 0 0 0 4.7 ------
PUT 34.3 63.6 2180 2181 29.3 13 12 13 12 12 13 12 13 0 0 0 0 0 0 0 0 3.1 ----
PUT 39.7 48.8 2478 2478 31.9 13 12 13 12 13 13 13 12 0 0 0 0 0 0 0 0 2.7 ---
PUT 32.1 47.3 1950 1949 35.0 12 12 12 12 13 13 12 12 0 0 0 0 0 0 0 0 3.0 ----
PUT 9.2 108.6 542 542 40.6 13 13 13 12 13 12 13 13 0 0 0 0 0 0 0 0 5.7 -------
PUT 8.4 132.2 552 552 46.4 13 12 13 12 12 12 13 12 0 0 0 0 0 0 0 0 5.8 -------
PUT 18.1 44.8 1184 1184 51.0 12 12 13 12 12 13 12 13 0 0 0 0 0 0 0 0 4.6 ------
PUT 25.3 98.8 1622 1622 54.4 13 12 13 12 13 12 13 13 0 0 0 0 0 0 0 0 3.4 ----
PUT 27.0 52.5 1730 1730 56.9 12 13 12 13 13 12 12 13 0 0 0 0 0 0 0 0 2.5 ---
PUT 35.4 67.9 2260 2260 59.4 13 13 13 13 13 13 12 12 0 0 0 0 0 0 0 0 2.5 ---
PUT 38.1 52.3 2382 2383 61.9 13 12 12 13 13 13 13 12 0 0 0 0 0 0 0 0 2.5 ---
PUT 37.2 18.8 2306 2306 64.4 13 13 12 13 13 13 12 12 0 0 0 0 0 0 0 0 2.5 ---
PUT 33.7 25.1 2059 2059 67.1 13 12 12 13 12 13 13 12 0 0 0 0 0 0 0 0 2.8 ---
PUT 23.8 75.4 1427 1426 70.1 13 12 12 13 13 13 13 12 0 0 0 0 0 0 0 0 3.0 ---
PUT 12.2 191.3 705 706 73.9 12 13 13 13 13 13 12 12 0 0 0 0 0 0 0 0 3.8 -----
PUT 4.5 15.7 270 269 80.8 12 12 13 13 13 13 12 12 0 0 0 0 0 0 0 0 6.9 ---------
PUT 5.2 129.8 347 347 87.0 13 12 13 12 13 13 12 12 0 0 0 0 0 0 0 0 6.2 --------
PUT 8.4 133.8 557 557 92.4 13 13 12 13 12 13 12 13 0 0 0 0 0 0 0 0 5.4 -------
PUT 14.3 6.2 933 933 97.3 13 12 12 13 12 13 13 12 0 0 0 0 0 0 0 0 4.9 ------
PUT 11.5 16.5 777 777 100.0 11 15 10 13 11 12 13 15 0 0 0 0 0 0 0 0 2.7 ---
MIX 0.0 0.0 0 0 100.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0
MIX 2.3 5.6 0 0 101.2 12 14 11 12 12 12 13 13 0 0 0 0 0 0 0 0 1.2 -
MIX 0.3 3.9 0 0 110.4 12 13 13 13 12 13 12 13 0 0 0 0 0 0 0 0 9.2 ------------
MIX 0.0 4.1 0 0 119.7 13 13 13 12 12 13 13 13 0 0 0 0 0 0 0 0 9.3 ------------
MIX 0.0 5.3 0 0 129.4 13 13 12 13 12 13 12 13 0 0 0 0 0 0 0 0 9.8 -------------
MIX 0.0 5.6 0 0 139.0 13 13 12 12 12 13 13 12 0 0 0 0 0 0 0 0 9.6 ------------
MIX 0.0 6.3 0 0 148.5 13 13 13 12 12 12 13 12 0 0 0 0 0 0 0 0 9.5 ------------
MIX 0.0 7.0 0 0 158.4 13 13 13 12 12 13 12 13 0 0 0 0 0 0 0 0 9.9 -------------
MIX 0.0 7.0 0 0 167.7 12 13 13 12 12 13 12 13 0 0 0 0 0 0 0 0 9.3 ------------
MIX 0.0 7.9 0 0 176.7 13 13 13 13 12 13 12 13 0 0 0 0 0 0 0 0 9.1 ------------
MIX 0.0 8.7 0 0 186.5 13 12 13 13 12 13 12 13 0 0 0 0 0 0 0 0 9.8 -------------
MIX 0.0 8.7 0 0 196.0 13 13 13 12 12 12 12 13 0 0 0 0 0 0 0 0 9.5 ------------
MIX 0.0 3.5 0 0 200.0 10 8 12 15 17 11 15 11 0 0 0 0 0 0 0 0 4.0 -----
GET 0.0 0.0 0 0 200.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0
GET 0.0 0.6 0 0 206.5 13 13 13 12 10 13 13 13 0 0 0 0 0 0 0 0 6.5 --------
GET 0.0 0.0 0 0 217.9 13 12 13 13 12 12 12 13 0 0 0 0 0 0 0 0 11.4 ---------------
GET 0.0 0.0 0 0 229.3 13 12 13 13 13 11 12 13 0 0 0 0 0 0 0 0 11.4 ---------------
GET 0.0 0.0 0 0 240.6 13 13 13 13 13 12 12 13 0 0 0 0 0 0 0 0 11.3 ---------------
GET 0.0 0.0 0 0 251.9 13 13 13 12 13 13 10 13 0 0 0 0 0 0 0 0 11.3 ---------------
GET 0.0 0.0 0 0 263.2 12 12 13 12 13 13 12 13 0 0 0 0 0 0 0 0 11.3 ---------------
GET 0.0 0.0 0 0 274.4 13 13 13 13 12 13 13 11 0 0 0 0 0 0 0 0 11.2 --------------
GET 0.0 0.0 0 0 285.9 12 13 13 13 12 12 13 13 0 0 0 0 0 0 0 0 11.5 ---------------
GET 0.0 0.0 0 0 297.3 12 13 13 13 12 12 13 12 0 0 0 0 0 0 0 0 11.4 ---------------
GET 0.0 0.0 0 0 300.0 6 9 0 11 22 21 24 6 0 0 0 0 0 0 0 0 2.7 ---
* MIX is 2% (2000000) del/put, 98% (12100654) get
DB size: 3.9G /dev/shm/test-shf-19973.shf
这是与上述相同的测试,但使用LMDB而不是共享HashaShfile:
笔记:
$ perl perf-test-lmdb.pl
...
perf testing: LMDB aka Lightning MDB
running tests on: via command: 'cat /proc/cpuinfo | egrep 'model name' | head -n 1'
running tests on: `model name : Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz`
-OP MMAP REMAP SHRK PART TOTAL ------PERCENT OPERATIONS PER PROCESS PER SECOND -OPS
--- -k/s --k/s --/s --/s M-OPS 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 -M/s
PUT 0.0 0.0 0 0 0.0 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0
PUT 0.0 0.0 0 0 1.1 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1.1 -
PUT 0.0 0.0 0 0 1.9 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.8 -
PUT 0.0 0.0 0 0 2.6 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.7
PUT 0.0 0.0 0 0 3.3 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.7
PUT 0.0 0.0 0 0 3.9 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.6
PUT 0.0 0.0 0 0 4.4 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.6
PUT 0.0 0.0 0 0 5.0 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.5
PUT 0.0 0.0 0 0 5.4 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.5
PUT 0.0 0.0 0 0 5.9 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.5
PUT 0.0 0.0 0 0 6.3 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.4
PUT 0.0 0.0 0 0 6.8 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.4
PUT 0.0 0.0 0 0 7.2 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.4
PUT 0.0 0.0 0 0 7.6 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.4
PUT 0.0 0.0 0 0 7.9 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.4
PUT 0.0 0.0 0 0 8.3 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.3
PUT 0.0 0.0 0 0 8.6 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.3
...
PUT 0.0 0.0 0 0 72.1 0 0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0.3
PUT 0.0 0.0 0 0 72.3 5 0 93 2 0 0 0 0 0 0 0 0 0 0 0 0 0.2
...
PUT 0.0 0.0 0 0 100.0100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.2
MIX 0.0 0.0 0 0 100.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0
MIX 0.0 0.0 0 0 100.3 13 12 12 13 13 12 12 13 0 0 0 0 0 0 0 0 0.3
MIX 0.0 0.0 0 0 101.3 12 12 12 13 12 12 13 13 0 0 0 0 0 0 0 0 1.0 -
MIX 0.0 0.0 0 0 102.3 13 12 13 13 12 13 12 12 0 0 0 0 0 0 0 0 1.0 -
...
MIX 0.0 0.0 0 0 198.3 13 13 12 13 13 12 12 12 0 0 0 0 0 0 0 0 1.0 -
MIX 0.0 0.0 0 0 199.4 12 12 12 12 13 13 13 13 0 0 0 0 0 0 0 0 1.1 -
MIX 0.0 0.0 0 0 200.0 13 27 10 3 17 8 11 11 0 0 0 0 0 0 0 0 0.6
GET 0.0 0.0 0 0 200.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0
GET 0.0 0.0 0 0 203.0 13 13 12 13 11 13 12 13 0 0 0 0 0 0 0 0 3.0 ---
GET 0.0 0.0 0 0 208.1 13 12 13 13 12 13 11 13 0 0 0 0 0 0 0 0 5.2 ------
GET 0.0 0.0 0 0 213.4 12 11 14 12 13 13 13 11 0 0 0 0 0 0 0 0 5.2 ------
GET 0.0 0.0 0 0 218.6 13 11 14 12 13 12 13 12 0 0 0 0 0 0 0 0 5.2 ------
GET 0.0 0.0 0 0 223.8 13 11 13 13 13 13 12 12 0 0 0 0 0 0 0 0 5.3 -------
GET 0.0 0.0 0 0 229.2 12 12 12 13 14 14 12 12 0 0 0 0 0 0 0 0 5.4 -------
GET 0.0 0.0 0 0 234.3 12 13 12 12 11 13 13 13 0 0 0 0 0 0 0 0 5.1 ------
GET 0.0 0.0 0 0 239.6 11 12 14 12 12 13 14 12 0 0 0 0 0 0 0 0 5.3 -------
GET 0.0 0.0 0 0 244.9 12 12 14 10 13 13 14 13 0 0 0 0 0 0 0 0 5.3 -------
GET 0.0 0.0 0 0 250.1 11 11 13 13 13 13 14 13 0 0 0 0 0 0 0 0 5.3 -------
GET 0.0 0.0 0 0 255.3 13 12 12 12 13 12 13 12 0 0 0 0 0 0 0 0 5.2 ------
GET 0.0 0.0 0 0 260.5 13 12 11 13 12 14 13 11 0 0 0 0 0 0 0 0 5.2 ------
GET 0.0 0.0 0 0 265.8 13 12 12 11 13 13 14 11 0 0 0 0 0 0 0 0 5.2 ------
GET 0.0 0.0 0 0 270.8 14 12 12 12 13 13 13 12 0 0 0 0 0 0 0 0 5.1 ------
GET 0.0 0.0 0 0 275.9 12 14 13 13 13 12 14 10 0 0 0 0 0 0 0 0 5.1 ------
GET 0.0 0.0 0 0 281.3 12 14 13 12 12 13 14 10 0 0 0 0 0 0 0 0 5.4 -------
GET 0.0 0.0 0 0 286.4 14 13 12 13 12 13 13 12 0 0 0 0 0 0 0 0 5.2 ------
GET 0.0 0.0 0 0 291.7 13 12 11 11 13 13 13 13 0 0 0 0 0 0 0 0 5.3 -------
GET 0.0 0.0 0 0 296.7 12 13 12 13 13 14 11 13 0 0 0 0 0 0 0 0 5.0 ------
GET 0.0 0.0 0 0 300.0 12 22 11 19 10 0 0 25 0 0 0 0 0 0 0 0 3.2 ----
GET 0.0 0.0 0 0 300.0 0 0 0 0 0 0 0100 0 0 0 0 0 0 0 0 0.0
* MIX is 2% (2000000) del/put, 98% (12100654) get
DB size: 2.6G /dev/shm/test-lmdb-20848